NOAA/NWS · 实时热榜

* WHAT...Hot daytime conditions with high temperatures between 98 and 106 common. * WHERE...Cuyama Valley. * WHEN...Until 8 PM PDT Saturday. * IMPACTS...There is a high risk for dangerous heat illness, especially for sensitive groups like the very young, the very old, those without air conditioning, and those active outdoors. Safety instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. If you do not have air conditioning in your home or lack shelter, you can call 211 for assistance locating appropriate shelter from the heat.

* WHAT...Hot daytime conditions with high temperatures between 95 and 105 common, except locally up to 108 in the hottest locations. * WHERE...Northern Ventura County Mountains. * WHEN...Until 8 PM PDT Saturday. * IMPACTS...There is a high risk for dangerous heat illness, especially for sensitive groups like the very young, the very old, those without air conditioning, and those active outdoors. Safety instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. If you do not have air conditioning in your home or lack shelter, you can call 211 for assistance locating appropriate shelter from the heat.

* WHAT...Dangerously hot conditions with temperatures 102 to 110. * WHERE...Antelope Valley, Eastern Antelope Valley Foothills, and Western Antelope Valley Foothills. * WHEN...Until 8 PM PDT Saturday. * IMPACTS...There is a high risk for dangerous heat illness, especially for sensitive groups like the very young, the very old, those without air conditioning, and those active outdoors. Safety instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. If you do not have air conditioning in your home or lack shelter, you can call 211 for assistance locating appropriate shelter from the heat.

* WHAT...Dangerously hot and humid conditions. Afternoon temperatures 107 to 114. Major Heat Risk. * WHERE...Yuma, La Paz, and Eastern Riverside Counties, including the Colorado River Valley. * WHEN...Until 8 PM MST /8 PM PDT/ Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. Safety instructions: An Extreme Heat Warning means that a period of very hot temperatures, even by local standards, will occur. Actions should be taken to lessen the impact of the extreme heat. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose-fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Public cooling shelters are available in some areas. Consult county officials for more details.

* WHAT...Dangerously hot and humid conditions. Afternoon temperatures 107 to 114. Major Heat Risk. * WHERE...Mostly rural areas of Maricopa County and Northern Pinal County. * WHEN...Until 8 PM MST Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * ADDITIONAL DETAILS...In Maricopa County, Call 2-1-1 to find a free cooling center, transportation, water and more. https://www.maricopa.gov/heat Safety instructions: An Extreme Heat Warning means that a period of very hot temperatures, even by local standards, will occur. Actions should be taken to lessen the impact of the extreme heat. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose-fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Public cooling shelters are available in some areas. Consult county officials for more details.

* WHAT...Dangerously hot and humid conditions. Afternoon temperatures 107 to 113. Major Heat Risk. * WHERE...The Phoenix metropolitan area. * WHEN...Until 8 PM MST Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * ADDITIONAL DETAILS...In Maricopa County, Call 2-1-1 to find a free cooling center, transportation, water and more. https://www.maricopa.gov/heat Safety instructions: An Extreme Heat Warning means that a period of very hot temperatures, even by local standards, will occur. Actions should be taken to lessen the impact of the extreme heat. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose-fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Public cooling shelters are available in some areas. Consult county officials for more details.

* WHAT...Dangerously hot and humid conditions. Afternoon temperatures 107 to 117. Major Heat Risk. * WHERE...Western and Southern Imperial County, including the Imperial Valley and Salton Sea. * WHEN...Until 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. Safety instructions: An Extreme Heat Warning means that a period of very hot temperatures, even by local standards, will occur. Actions should be taken to lessen the impact of the extreme heat. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose-fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Public cooling shelters are available in some areas. Consult county officials for more details.

The National Weather Service in Denver CO has issued a Fire Weather Watch in effect from Wednesday afternoon through Wednesday evening. * AFFECTED AREA...Fire Weather Zones 211 AND 213. * TIMING...For the Red Flag Warning, from 1 PM this afternoon to 7 PM MDT this evening. For the Fire Weather Watch, from Wednesday afternoon through Wednesday evening. * WINDS...For the Red Flag Warning west 10 to 15 mph with gusts up to 30 mph, and for the Fire Weather Watch west 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...For the Red Flag Warning between 12 to 17 percent, and for the Fire Weather Watch between 8 to 15 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. Safety instructions: Follow all fire restrictions. Avoid activities that can cause sparks and do not park hot vehicles on dry vegetation. One less spark, one less wildfire. Be sure you are signed up for your local emergency alert system. You can find this information at dhsem.colorado.gov/emergencyalert. A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.

The National Weather Service in Denver CO has issued a Fire Weather Watch in effect from Wednesday afternoon through Wednesday evening. * AFFECTED AREA...Fire Weather Zones 211 AND 213. * TIMING...For the Red Flag Warning, from 1 PM this afternoon to 7 PM MDT this evening. For the Fire Weather Watch, from Wednesday afternoon through Wednesday evening. * WINDS...For the Red Flag Warning west 10 to 15 mph with gusts up to 30 mph, and for the Fire Weather Watch west 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...For the Red Flag Warning between 12 to 17 percent, and for the Fire Weather Watch between 8 to 15 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. Safety instructions: Follow all fire restrictions. Avoid activities that can cause sparks and do not park hot vehicles on dry vegetation. One less spark, one less wildfire. Be sure you are signed up for your local emergency alert system. You can find this information at dhsem.colorado.gov/emergencyalert. A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.

The National Weather Service in Denver CO has issued a Fire Weather Watch. * AFFECTED AREA...Fire Weather Zones 211, 212, 213, 214, 217, and 218. * TIMING...From Wednesday afternoon through Wednesday evening. * WINDS...West 10 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...Between 8 to 15 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. Safety instructions: Follow all fire restrictions. Avoid activities that can cause sparks and do not park hot vehicles on dry vegetation. One less spark, one less wildfire.

...CRITICAL FIRE WEATHER CONDITIONS EXPECTED IN THE WESTERN COLUMBIA RIVER GORGE THIS AFTERNOON THROUGH WEDNESDAY EVENING FOR DRY CONDITIONS AND EASTERLY WINDS UP TO 38 MPH... * AFFECTED AREA...In Washington, Fire Weather Zone 636 Western Columbia River Gorge in Oregon and Washington. * WINDS...East 10 to 20 mph with gusts up to 38 mph. Winds will be strongest this morning through the early afternoon, and again tonight through early Wednesday afternoon. * RELATIVE HUMIDITY...As low as 15-20 percent. Relative humidity values will be lowest this afternoon and Wednesday afternoon. Poor overnight humidity recoveries are expected with maximum relative humidity values ranging between 35-45%. * IMPACTS...Conditions may be favorable for rapid fire spread which may threaten life and property. Use extra caution with potential ignition sources, especially in grassy areas. Outdoor burning is not recommended. Safety instructions: A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of the above conditions can contribute to extreme fire behavior.

* WHAT...Dangerously hot conditions, with temperatures around 105 to 110 degrees expected. * WHERE...Marble and Glen Canyons; including Page. * WHEN...Until 8 PM MST /9 PM MDT/ Wednesday. * IMPACTS...Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure. Safety instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take action when you see symptoms of heat exhaustion and heat stroke. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Stay cool, stay hydrated, stay informed.

* WHAT...Dangerously hot and humid conditions. Afternoon temperatures 98 to 112. Major Heat Risk. * WHERE...Chuckwalla Mountains, Chocolate Mountains, Chiriaco Summit, and Joshua Tree NP. * WHEN...Until 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. Safety instructions: An Extreme Heat Warning means that a period of very hot temperatures, even by local standards, will occur. Actions should be taken to lessen the impact of the extreme heat. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose-fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Public cooling shelters are available in some areas. Consult county officials for more details.

* WHAT...Dangerously hot conditions with high temperatures of 100 to 110 expected. * WHERE...Apple and Lucerne Valleys. * WHEN...Until 8 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Safety instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...Dangerously hot conditions with high temperatures of 110 to 115 expected. * WHERE...Coachella Valley, San Diego County Deserts, and San Gorgonio Pass near Banning. * WHEN...Until 8 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Safety instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

...The Flood Warning continues for the following rivers in Texas... Nueces River Near Three Rivers affecting Live Oak County. Nueces River Near Tilden affecting McMullen County. For the Nueces River...including Cotulla, Tilden, Three Rivers, Mathis, Bluntzer, Calallen...Major flooding is forecast. - Forecast...The river is expected to fall below flood stage early Thursday morning and continue falling to 12.8 feet Saturday evening. - Flood stage is 25.0 feet. - Flood History...This crest compares to a previous crest of 36.2 feet on 07/20/1990. - http://www.weather.gov/safety/flood Safety instructions: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. Even 6 inches of fast-moving flood water can knock you off your feet and a depth of 2 feet will float your car. Never try to walk, swim, or drive through such swift water. If you come upon flood waters, stop, turn around and go another way. Additional information is available at www.weather.gov/crp.

* WHAT...Dangerously hot conditions expected below 4000 feet, with daytime temperatures ranging from 102 to 107 degrees at Havasupai Gardens, and 110 to 114 degrees at Phantom Ranch. * WHERE...Lower elevations of the Grand Canyon. * WHEN...Until 8 PM MST Wednesday. * IMPACTS...Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure. Safety instructions: This warning is reserved for only the hottest days of the year and is issued when temperatures are expected to rise to dangerous levels. Day hikers on Bright Angel Trail should descend no farther than 1 1/2 miles from the upper trailhead. Between the hours of 10 AM and 4 PM, hikers should be out of the canyon or at Havasupai Gardens or Bright Angel campgrounds, physical activity is discouraged. All hikers should have adequate gear, including a wide-brimmed hat, sunscreen, salty snacks, sufficient water, and electrolyte mix. Doubling your calorie intake helps maintain your energy. Hike smart.

* WHAT...Dangerously hot conditions with highs 110 to 120 degrees across the Mojave Desert. Highs 95 to 105 degrees across most of the southern Great Basin and Arizona Strip. Little to no overnight relief is expected, particularly in the Mojave Desert where lows of 80 to 95 degrees are forecast. This will result in Major-to-Extreme Heat Risk. * WHERE...Portions of northwest Arizona, southeast California, and south central and southern Nevada. * WHEN...Until 8 PM PDT /8 PM MST/ Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Safety instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Monitor the latest forecasts and warnings for updates.

* AFFECTED AREA...Fire Weather Zone 489 San Rafael Swell. * WINDS...Northwest 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...5 to 10 percent with poor overnight recovery. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. Safety instructions: A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.

* AFFECTED AREA...Fire Weather Zone 482 Western Uintah Basin. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...9 to 12 percent with poor overnight recovery. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. Safety instructions: A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.

...The Flood Warning continues for the following rivers in Texas... Nueces River Near Three Rivers affecting Live Oak County. Nueces River Near Tilden affecting McMullen County. For the Nueces River...including Cotulla, Tilden, Three Rivers, Mathis, Bluntzer, Calallen...Major flooding is forecast. - Forecast...The river is expected to fall below flood stage early Wednesday afternoon and continue falling to 7.1 feet Saturday evening. - Flood stage is 14.0 feet. - Flood History...This crest compares to a previous crest of 17.9 feet on 11/04/1985. - http://www.weather.gov/safety/flood Safety instructions: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. Even 6 inches of fast-moving flood water can knock you off your feet and a depth of 2 feet will float your car. Never try to walk, swim, or drive through such swift water. If you come upon flood waters, stop, turn around and go another way. Additional information is available at www.weather.gov/crp.

* AFFECTED AREA...Fire Weather Zone 489 San Rafael Swell. * WINDS...Northwest 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...5 to 10 percent with poor overnight recovery. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. Safety instructions: A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.

* AFFECTED AREA...Fire Weather Zone 482 Western Uintah Basin. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...9 to 12 percent with poor overnight recovery. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. Safety instructions: A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.

* WHAT...Dangerously hot conditions with several days of Major to Extreme heat risk. * WHERE...Indian Wells Valley, Mojave Desert, and Mojave Desert Slopes. * WHEN...Until 8 PM PDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Dangerously hot conditions with high temperatures up to 112 degrees. Overnight lows will range from 75-80 degrees. Safety instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. Stay cool, stay hydrated, stay informed. If you do not have air conditioning in your home or lack shelter, seek out resources provided by your local community management.

* WHAT...For the Heat Advisory and the Extreme Heat Watch, highs 96 to 102 degrees with overnight lows between 56 to 62 degrees. Widespread Moderate (level 2 out of 4) HeatRisk. * WHERE...Surprise Valley California. * WHEN...For the Heat Advisory, from 8 AM Wednesday to 8 AM PDT Thursday. For the Extreme Heat Watch, from Thursday morning through Sunday morning. * IMPACTS...Heat-related illnesses will be more likely, especially for those spending extended periods outdoors, in poorly cooled indoor spaces, or who are sensitive to heat. Safety instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...For the Heat Advisory, highs 95 to 102 degrees with overnight lows between 55 to 63 degrees. Widespread Moderate (level 2 out of 4) HeatRisk. For the Extreme Heat Watch, highs 98 to 103 degrees with overnight lows between 60 to 70 degrees. Widespread Moderate HeatRisk with areas of Major (level 3 out of 4) HeatRisk in lower valleys. * WHERE...Northern Washoe County. * WHEN...For the Heat Advisory, from 8 AM Wednesday to 8 AM PDT Thursday. For the Extreme Heat Watch, from Thursday morning through Sunday morning. * IMPACTS...Heat-related illnesses will be more likely, especially for those spending extended periods outdoors, in poorly cooled indoor spaces, or who are sensitive to heat. Safety instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

...CRITICAL FIRE WEATHER CONDITIONS EXPECTED IN THE WESTERN COLUMBIA RIVER GORGE TUESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR DRY CONDITIONS AND EASTERLY WINDS UP TO 40 MPH... * AFFECTED AREA...In Washington, Fire Weather Zone 636 Western Columbia River Gorge in Oregon and Washington. * WINDS...East 10 to 20 mph with gusts up to 40 mph. Winds will be strongest Tuesday morning through early Tuesday afternoon, and again Tuesday night through early Wednesday afternoon. * RELATIVE HUMIDITY...As low as 15-20 percent. Relative humidity values will be lowest Tuesday afternoon and Wednesday afternoon. Poor overnight humidity recoveries are expected Tuesday night with maximum relative humidity values ranging between 35-45%. * IMPACTS...Conditions may be favorable for rapid fire spread which may threaten life and property. Use extra caution with potential ignition sources, especially in grassy areas. Outdoor burning is not recommended. Safety instructions: A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of the above conditions can contribute to extreme fire behavior.

* AFFECTED AREA...In Colorado, Fire Weather Zone 202 White River Forecast Area, Fire Weather Zone 205 Colorado River Headwaters and Fire Weather Zone 207 Southwest Colorado Lower Forecast Area. * TIMING...From 1 PM this afternoon to 7 PM MDT this evening. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...7 to 12 percent. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended. Safety instructions: A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.

* WHAT...For the Heat Advisory and the Extreme Heat Watch, highs 97 to 102 degrees with overnight lows between 60 to 70 degrees. Widespread Moderate HeatRisk (level 2 out of 4) with areas of Major (level 3 out of 4) HeatRisk in lower valleys. * WHERE...Greater Reno-Carson City-Minden Area. * WHEN...For the Heat Advisory, from 8 AM Wednesday to 8 AM PDT Thursday. For the Extreme Heat Watch, from Thursday morning through Sunday morning. * IMPACTS...Heat-related illnesses will be more likely, especially for those spending extended periods outdoors, in poorly cooled indoor spaces, or who are sensitive to heat. Safety instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...Dangerously hot conditions with several days of Major to Extreme heat risk. * WHERE...Indian Wells Valley, Mojave Desert, and Mojave Desert Slopes. * WHEN...Until 8 PM PDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Dangerously hot conditions with high temperatures up to 110 degrees. Overnight lows will range from 75-80 degrees. Safety instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. Stay cool, stay hydrated, stay informed. If you do not have air conditioning in your home or lack shelter, seek out resources provided by your local community management.

...The National Weather Service in Boston/Norton MA has issued a Flood Warning for the following rivers in Rhode Island... Wood River At Hope Valley affecting Washington County. For the Wood River...including Hope Valley...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Wood River at Hope Valley. * WHEN...From this morning to this afternoon. * IMPACTS...At 5.0 feet, In Richmond, floodwaters begin to pond onto Wood River Drive. In Hopkinton off of Main Street, the Wood River begins to flood Dow Park. * ADDITIONAL DETAILS... - At 6:15 AM EDT Tuesday the stage was 5.0 feet. - Bankfull stage is 5.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 6:15 AM EDT Tuesday was 5.0 feet. - Forecast...The river is expected to fall below flood stage this morning and continue falling to 2.9 feet early Friday morning. - Flood stage is 5.0 feet. - http://www.weather.gov/safety/flood Safety instructions: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional information is available at www.weather.gov. The next statement will be issued this afternoon at 200 PM EDT.

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 537 IN EFFECT UNTIL 1 AM CDT TUESDAY FOR THE FOLLOWING AREAS IN MINNESOTA THIS WATCH INCLUDES 3 COUNTIES IN NORTH CENTRAL MINNESOTA CASS ITASCA KOOCHICHING THIS INCLUDES THE CITIES OF CASS LAKE, EAST GULL LAKE, ESTERDY, GRAND RAPIDS, INTERNATIONAL FALLS, LAKE SHORE, PINE RIVER, SCHLEY, AND WALKER. THIS ALSO INCLUDES THE TRIBAL LANDS OF THE BOIS FORTE BAND, DEER CREEK AND, NETT LAKE AREAS.

* WHAT...For the Heat Advisory and the Extreme Heat Watch, lower valley highs 95 to 102 degrees with overnight lows between 58 to 65 degrees. Widespread Moderate (level 2 out of 4) HeatRisk. * WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties. * WHEN...For the Heat Advisory, from 8 AM Wednesday to 8 AM PDT Thursday. For the Extreme Heat Watch, from Thursday morning through Sunday morning. * IMPACTS...Heat-related illnesses will be more likely, especially for those spending extended periods outdoors, in poorly cooled indoor spaces, or who are sensitive to heat. Safety instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...A portion of south-central Arizona, including Santa Cruz, southwest Cochise and south-central and southeast Pima counties. * WHEN...Until 10 PM MST this evening. * IMPACTS...Excessive rainfall runoff may result in flash flooding of normally dry washes, roadway dips and other low-lying areas. * ADDITIONAL DETAILS... - The combination of an increase in lower-level moisture and an favorable weather pattern will result in widespread strong thunderstorms with heavy rain across portions of south- central Arizona. Although most areas impacted by thunderstorms will receive only between one half to one inch of rain, isolated locations may receive between 1 and 3 inches. Excessive rainfall runoff will result in flash flooding. - Http://www.weather.gov/safety/flood Safety instructions: You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

* WHAT...For the Heat Advisory, highs 100 to 105 degrees with overnight lows between 62 to 70 degrees. Widespread Moderate (level 2 out of 4) HeatRisk with areas of Major (level 3 out of 4) HeatRisk in lower valleys. For the Extreme Heat Watch, highs 101 to 106 degrees with overnight lows between 65 to 74 degrees. Widespread Major HeatRisk. * WHERE...Western Nevada Basin and Range including Pyramid Lake. * WHEN...For the Heat Advisory, from 8 AM Wednesday to 8 AM PDT Thursday. For the Extreme Heat Watch, from Thursday morning through Sunday morning. * IMPACTS...Heat-related illnesses will be more likely, especially for those spending extended periods outdoors, in poorly cooled indoor spaces, or who are sensitive to heat. Safety instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

The National Weather Service in Medford has issued a Red Flag Warning, which is in effect from 2 PM to 9 PM PDT Wednesday. * IMPACTS...Any fires that develop will likely spread rapidly. * AFFECTED AREA...In California, Fire Weather zones 282, including Mt Shasta City, Dunsmuir and McCloud. * WIND...Southeast to southwest 10 to 15 mph with gusts to 20 mph. * HUMIDITY...Minimum humidity 10 to 15 percent. * ADDITIONAL INFORMATION...Increasingly unstable conditions could further increase fire activity. * DETAILED URL...View the hazard area in detail at https://weather.gov/wrh/hazards?wfo=mfr Safety instructions: Follow all fire restrictions. You can find your county's emergency sign up form as well as links to fire restrictions at weather.gov/medford/wildfire. One less spark, one less wildfire. Be sure you're signed up for your county's emergency alert system. Familiarize yourself with your emergency plan and make sure you listen to emergency services. Visit ready.gov/plan for more information. A Red Flag Warning is issued when we identify weather conditions that promote rapid spread of fire which may become life- threatening. This does not mean there is a fire. These conditions are either occurring now or will begin soon. It is important to have multiple ways to receive information from authorities.

...RED FLAG WARNING IN EFFECT FROM 2 PM TO 9 PM PDT WEDNESDAY FOR STRONG GUSTY WIND AND LOW RH AND UNSTABLE CONDITIONS FOR FIRE WEATHER ZONES 620, 621, 622, AND 623... * IMPACTS...Any fires that develop will likely spread rapidly. * AFFECTED AREA...In Oregon, Fire Weather zones 620, 621, 622, and 623, including Medford, Grants Pass, Ashland, Cave Junction, Eagle Point, Shady Cove, and the Siskiyous and southern Oregon Cascades. * WIND...Northwest 10 to 15 mph with gusts up to 25 mph in the afternoons, becoming east to northeast overnight. * HUMIDITY...Minimum humidity 8 to 15 percent, with poor recoveries as low as 20 percent. * ADDITIONAL INFORMATION...Critical fire weather conditions will be more prevalent in low-lying areas in the afternoons and evenings due to elevated breezes and minimum RHs. Overnight and into early morning hours, area peaks and ridgelines will have critical conditions due to easterly flow and poor recoveries. Increasingly unstable conditions are expected Wednesday, which could further increase fire activity. * DETAILED URL...View the hazard area in detail at https://weather.gov/wrh/hazards?wfo=mfr Safety instructions: Follow all fire restrictions. You can find your county's emergency sign up form as well as links to fire restrictions at weather.gov/medford/wildfire. One less spark, one less wildfire. Be sure you're signed up for your county's emergency alert system. Familiarize yourself with your emergency plan and make sure you listen to emergency services. Visit ready.gov/plan for more information. A Red Flag Warning is issued when we iden…

* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...The following areas: Central Susitna Valley and Western Susitna Valley. This includes Petersville, Cache Creek, Talkeetna, and communities along the Yentna and Skwentna Rivers. * WHEN...Through Friday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Significant rainfall is expected in the Susitna Valley through Wednesday August 5. Current estimates is for rain totals to range from 3 to 5 inches in the upper Yentna, Chulitna and Susitna Basins. Talkeetna: The heavy rainfall and drainage from high terrain near the Alaska Range could be impactful to erosion-prone areas and low-lying or poor-drainage areas throughout the rest of the Susitna Valley. Small rivers such as Montana Creek are expected to rise as well, but not to the level that occurred in late July. Petersville Area: Small creeks in and around Petersville such as Peters Creek and Cache Creek could experience flooding, with the highest water levels expected between Tuesday morning and Wednesday morning. Yentna: Larger rivers, including the Yentna and Skwentna rivers, are expected to crest later, between Thursday afternoon and Friday morning. - Http://www.weather.gov/safety/flood Safety instructions: You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. Stay tuned to further developments by listening to your l…

The National Weather Service in Grand Junction has issued a Red Flag Warning for gusty winds, low relative humidity and dry fuels, which is in effect from 1 PM to 7 PM MDT Tuesday. * AFFECTED AREA...In Colorado, Fire Weather Zone 207 Southwest Colorado Lower Forecast Area. * TIMING...From 1 PM to 7 PM MDT Tuesday. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...8 to 13 percent. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended. Safety instructions: A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.

* AFFECTED AREA...In Colorado, Fire Weather Zone 202 White River Forecast Area and Fire Weather Zone 205 Colorado River Headwaters. * TIMING...From 1 PM to 7 PM MDT Tuesday. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...8 to 13 percent. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended. Safety instructions: A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.

* WHAT...For the Heat Advisory, highs 98 to 104 degrees with overnight lows between 65 to 73 degrees. Widespread Moderate (level 2 out of 4) HeatRisk with areas of Major (level 3 out of 4) HeatRisk in lower valleys. For the Extreme Heat Watch, highs 99 to 105 degrees with overnight lows between 65 to 75 degrees. Widespread Moderate HeatRisk with areas of Major HeatRisk. * WHERE...Mineral and Southern Lyon Counties. * WHEN...For the Heat Advisory, from 8 AM Wednesday to 8 AM PDT Thursday. For the Extreme Heat Watch, from Thursday morning through Sunday morning. * IMPACTS...Heat-related illnesses will be more likely, especially for those spending extended periods outdoors, in poorly cooled indoor spaces, or who are sensitive to heat. Safety instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* IMPACTS...Any fires that develop will likely spread rapidly. * AFFECTED AREA...In California...Fire weather zone 280, and in Oregon, Fire weather zones 616 and 617. This includes the East Evans Creek and Castle fires as well as Roseburg, Toketee Falls, Elkton, Tiller, Happy Camp, Etna, and Fort Jones. * WIND...West to northwest 10 to 15 mph with gusts up to 25 mph. * HUMIDITY...Minimum humidity 10 to 15 percent * ADDITIONAL INFORMATION...Increasingly unstable conditions could further increase fire activity. * DETAILED URL...View the hazard area in detail at https://weather.gov/wrh/hazards?wfo=mfr Safety instructions: Follow all fire restrictions. You can find your county's emergency sign up form as well as links to fire restrictions at weather.gov/medford/wildfire. One less spark, one less wildfire. Be sure you're signed up for your county's emergency alert system. Familiarize yourself with your emergency plan and make sure you listen to emergency services. Visit ready.gov/plan for more information. A Red Flag Warning is issued when we identify weather conditions that promote rapid spread of fire which may become life- threatening. This does not mean there is a fire. These conditions are either occurring now or will begin soon. It is important to have multiple ways to receive information from authorities.

The National Weather Service in Medford has issued a Red Flag Warning, which is in effect from 2 PM to 9 PM PDT Wednesday. * IMPACTS...Any fires that develop will likely spread rapidly. * AFFECTED AREA...In California...Fire weather zone 280, and in Oregon, Fire weather zone 616 and 617. This includes Roseburg, Toketee Falls, Elkton, Tiller, Happy Camp, Etna, and Fort Jones. * WIND...West to northwest 10 to 15 mph with gusts up to 25 mph. * HUMIDITY...Minimum humidity 10 to 15 percent * ADDITIONAL INFORMATION...Increasingly unstable conditions could further increase fire activity. * DETAILED URL...View the hazard area in detail at https://weather.gov/wrh/hazards?wfo=mfr Safety instructions: Follow all fire restrictions. You can find your county's emergency sign up form as well as links to fire restrictions at weather.gov/medford/wildfire. One less spark, one less wildfire. Be sure you're signed up for your county's emergency alert system. Familiarize yourself with your emergency plan and make sure you listen to emergency services. Visit ready.gov/plan for more information. A Red Flag Warning is issued when we identify weather conditions that promote rapid spread of fire which may become life- threatening. This does not mean there is a fire. These conditions are either occurring now or will begin soon. It is important to have multiple ways to receive information from authorities.

...RED FLAG WARNING IN EFFECT FROM 2 PM TO 9 PM PDT WEDNESDAY FOR STRONG GUSTY WIND AND LOW RH AND UNSTABLE CONDITIONS FOR FIRE WEATHER ZONES 620, 621, 622, AND 623... * IMPACTS...Any fires that develop will likely spread rapidly. * AFFECTED AREA...In Oregon, Fire Weather zones 620, 621, 622, and 623, including Medford, Grants Pass, Ashland, Cave Junction, Eagle Point, Shady Cove, and the Siskiyous and southern Oregon Cascades. * WIND...Northwest 10 to 15 mph with gusts up to 25 mph in the afternoons, becoming east to northeast overnight. * HUMIDITY...Minimum humidity 8 to 15 percent, with poor recoveries as low as 20 percent. * ADDITIONAL INFORMATION...Critical fire weather conditions will be more prevalent in low-lying areas in the afternoons and evenings due to elevated breezes and minimum RHs. Overnight and into early morning hours, area peaks and ridgelines will have critical conditions due to easterly flow and poor recoveries. Increasingly unstable conditions are expected Wednesday, which could further increase fire activity. * DETAILED URL...View the hazard area in detail at https://weather.gov/wrh/hazards?wfo=mfr Safety instructions: Follow all fire restrictions. You can find your county's emergency sign up form as well as links to fire restrictions at weather.gov/medford/wildfire. One less spark, one less wildfire. Be sure you're signed up for your county's emergency alert system. Familiarize yourself with your emergency plan and make sure you listen to emergency services. Visit ready.gov/plan for more information. A Red Flag Warning is issued when we iden…

* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...The following areas: Central Susitna Valley and Western Susitna Valley. This includes Petersville, Cache Creek, Talkeetna, and communities along the Yentna and Skwentna Rivers. * WHEN...From Tuesday morning through Friday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Significant rainfall is expected in the Susitna Valley Monday August 3 through Wednesday August 5. Current estimates is for 48-hr rain totals to range from 3 to 5 inches in the upper Yentna, Chulitna and Susitna Basins. Talkeetna: The heavy rainfall and drainage from high terrain near the Alaska Range could be impactful to erosion-prone areas and low-lying or poor-drainage areas throughout the rest of the Susitna Valley. Small rivers such as Montana Creek are expected to rise as well, but not to the level that occurred in late July. Petersville Area: Small creeks in and around Petersville such as Peters Creek and Cache Creek could experience flooding, with the highest water levels expected between Tuesday morning and Wednesday morning. Yentna: Larger rivers, including the Yentna and Skwentna rivers, are expected to crest later, between Thursday afternoon and Friday morning. - Http://www.weather.gov/safety/flood Safety instructions: You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. Stay tuned to…

* WHAT...Thunderstorms will initially develop over the Mogollon Rim and other sky islands of Southeast Arizona, then track southwest into the valleys of Southeast Arizona and become widespread during the late afternoon, then move across the lower deserts of Southeast Arizona through the evening. The stronger storms will produce organized thunderstorm outflow winds between 45-55 mph, resulting in dense blowing dust with visibility between one-quarter and one-half mile and possibly a haboob with near-zero visibility. For the Extreme Heat Warning, dangerously hot conditions with temperatures 101 to 106. Major to Extreme HeatRisk is expected. * WHERE...Eastern Cochise County below 5000 feet, Tucson Metro Area, Upper Gila River Valley, Upper San Pedro River Valley, and Upper Santa Cruz River Valley/Altar Valley. * WHEN...Until 8 PM MST this evening. * IMPACTS...Hazardous driving conditions due to reduced visibility. Heat related illnesses increase significantly during extreme heat events. Safety instructions: Persons with respiratory problems should make preparations to stay indoors until the storm passes. Be ready for a sudden drop in visibility to near zero. If you encounter blowing dust or blowing sand on the roadway or see it approaching, pull off the road as far as possible and put your vehicle in park. Turn the lights all the way off and keep foot off the brake pedal. Remember, 'Pull Aside, Stay Alive'. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside.…

* WHAT...Hot daytime conditions with high temperatures between 95 and 105 common, except locally up to 108 in the hottest locations. * WHERE...Northern Ventura County Mountains. * WHEN...Until 8 PM PDT Wednesday. * IMPACTS...There is a high risk for dangerous heat illness, especially for sensitive groups like the very young, the very old, those without air conditioning, and those active outdoors. * ADDITIONAL DETAILS...Heat hazards may extend through Saturday. Safety instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Stay cool, stay hydrated, stay informed. Monitor the latest forecasts and warnings for updates. If you do not have air conditioning in your home or lack shelter, you can call 211 for assistance locating appropriate shelter from the heat.

The National Weather Service in Medford has issued a Red Flag Warning, which is in effect from 2 PM to 9 PM PDT Wednesday. * IMPACTS...Any fires that develop will likely spread rapidly. * AFFECTED AREA...In Oregon, Fire Weather zones 620, 621, 622, and 623, including Medford, Grants Pass, Ashland, Cave Junction, Eagle Point, Shady Cove, and the Siskiyous and southern Oregon Cascades. * WIND...Northwest 10 to 15 mph with gusts up to 25 mph in the afternoons, becoming east to northeast overnight. * HUMIDITY...Minimum humidity 8 to 15 percent, with poor recoveries as low as 20 percent. * ADDITIONAL INFORMATION...Critical fire weather conditions will be more prevalent in low- lying areas in the afternoon and evening due to elevated breezes and minimum RHs. Overnight and into early morning hours, area peaks and ridgelines will have critical conditions due to easterly flow and poor recoveries. Increasingly unstable conditions are expected Wednesday, which could further increase fire activity. * DETAILED URL...View the hazard area in detail at https://weather.gov/wrh/hazards?wfo=mfr Safety instructions: Follow all fire restrictions. You can find your county's emergency sign up form as well as links to fire restrictions at weather.gov/medford/wildfire. One less spark, one less wildfire. Be sure you're signed up for your county's emergency alert system. Familiarize yourself with your emergency plan and make sure you listen to emergency services. Visit ready.gov/plan for more information. A Red Flag Warning is issued when we identify weather conditions that promote rapid spr…

* WHAT...Dangerously hot conditions with high temperatures of 100 to 110 expected. * WHERE...Apple and Lucerne Valleys. * WHEN...Until 8 PM PDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Safety instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...Dangerously hot conditions with high temperatures of 110 to 115 expected. * WHERE...Coachella Valley, San Diego County Deserts, and San Gorgonio Pass near Banning. * WHEN...Until 8 PM PDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Safety instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.