300 WWUS75 KPSR 191748 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 1048 AM MST Wed Aug 19 2026 AZZ538-539-553-554-559-200600- /O.EXT.KPSR.XH.W.0008.000000T0000Z-260824T0300Z/ /O.CON.KPSR.DU.Y.0003.260820T0000Z-260820T0500Z/ Tonopah Desert-Gila Bend-Northwest Pinal County-West Pinal County- Sonoran Desert Natl Monument- Including the cities of Wintersburg, Gila Bend, Hassayampa, Kaka, Florence, Cactus Forest, Casa Grande, Sentinel, Coolidge, Tonopah, and Arlington 1048 AM MST Wed Aug 19 2026 ...EXTREME HEAT WARNING NOW IN EFFECT UNTIL 8 PM MST SUNDAY... ...BLOWING DUST ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 10 PM MST THIS EVENING... * WHAT...For the Extreme Heat Warning, dangerously hot conditions. Afternoon temperatures 106 to 113. Major Heat Risk. For the Blowing Dust Advisory, visibility between one-quarter and one mile in blowing dust expected. * WHERE...Gila Bend, Northwest Pinal County, Sonoran Desert Natl Monument, Tonopah Desert, and West Pinal County. * WHEN...For the Extreme Heat Warning, until 8 PM MST Sunday. For the Blowing Dust Advisory, from 5 PM this afternoon to 10 PM MST this evening. * IMPACTS...Hazardous driving conditions due to reduced visibility. 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 PRECAUTIONARY/PREPAREDNESS ACTIONS... 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'. 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. && $$ AZZ540-550-551-200600- /O.EXT.KPSR.XH.W.0008.000000T0000Z-260824T0300Z/ /O.CON.KPSR.DU.Y.0003.260820T0000Z-260820T0500Z/ Buckeye/Avondale-South Mountain/Ahwatukee-Southeast Valley/Queen Creek- Including the cities of Avondale, Liberty, Goodyear, Sun Lakes, Cashion, and Queen Creek 1048 AM MST Wed Aug 19 2026 ...EXTREME HEAT WARNING NOW IN EFFECT UNTIL 8 PM MST SUNDAY... ...BLOWING DUST ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 10 PM MST THIS EVENING... * WHAT...For the Extreme Heat Warning, dangerously hot conditions. Afternoon temperatures 109 to 112. Major Heat Risk. For the Blowing Dust Advisory, visibility between one-quarter and one mile in blowing dust expected. * WHERE...The Phoenix metropolitan area. * WHEN...For the Extreme Heat Warning, until 8 PM MST Sunday. For the Blowing Dust Advisory, from 5 PM this afternoon to 10 PM MST this evening. * IMPACTS...Hazardous driving conditions due to reduced visibility. 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 PRECAUTIONARY/PREPAREDNESS ACTIONS... 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'. 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. && $$ AZZ530>533-535-536-CAZ562-565>567-569-570-200600- /O.EXT.KPSR.XH.W.0008.000000T0000Z-260824T0300Z/ Parker Valley-Kofa-Yuma-Central La Paz-Southeast Yuma County-Gila River Valley-Imperial County Southwest-Imperial County Southeast- Imperial County West-Imperial Valley-Palo Verde Valley-Chuckwalla Valley- Including the cities of Blythe, Coyote Wells, Coolidge Springs, Brenda, Brawley, Winona, Mountain Spring, Plaster City, Ehrenberg, Yuma, Parker, Harcuvar, Palo Verde, Vicksburg Junction, Fortuna Foothills, Palm Canyon, Vicksburg, Alamorio, Calexico, Midland, Ocotillo, El Centro, Quartzsite, Ripley, Salome, Salton City, Winterhaven, Martinez Lake, and Ligurta 1048 AM MST Wed Aug 19 2026 /1048 AM PDT Wed Aug 19 2026/ ...EXTREME HEAT WARNING NOW IN EFFECT UNTIL 8 PM MST /8 PM PDT/ SUNDAY... * WHAT...Dangerously hot and humid conditions. Afternoon temperatures 106 to 114 expected. Major Heat Risk. * WHERE...Portions of southwest Arizona and southeast California. * WHEN...Until 8 PM MST /8 PM PDT/ Sunday. * 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. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. && $$ AZZ534-541-549-555-200600- /O.EXT.KPSR.XH.W.0008.000000T0000Z-260824T0300Z/ Aguila Valley-Cave Creek/New River-Fountain Hills/East Mesa- Apache Junction/Gold Canyon- Including the cities of Fountain Hills, Apache Junction, Scottsdale, Aguila, Gladden, and Wickenburg 1048 AM MST Wed Aug 19 2026 ...EXTREME HEAT WARNING NOW IN EFFECT UNTIL 8 PM MST SUNDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 104 to 111 expected. Major Heat Risk. * WHERE...Aguila Valley, Apache Junction/Gold Canyon, Cave Creek/New River, Fountain Hills/East Mesa, Gila Bend, Northwest Pinal County, Sonoran Desert Natl Monument, and Tonopah Desert. * WHEN...Until 8 PM MST Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * ADDITIONAL DETAILS...In Maricopa County, call 2-1-1 to find a free cooling center, transportation, water and more. https://www.maricopa.gov/heat PRECAUTIONARY/PREPAREDNESS ACTIONS... An Extreme Heat Warning means that a period of very hot temperatures, even by local standards, will occur. Actions should be taken to lessen the impact of the extreme heat. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose-fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Public cooling shelters are available in some areas. Consult county officials for more details. && $$ AZZ537-542>544-546-548-200600- /O.EXT.KPSR.XH.W.0008.000000T0000Z-260824T0300Z/ Northwest Valley-Deer Valley-Central Phoenix-North Phoenix/Glendale-Scottsdale/Paradise Valley-East Valley- Including the cities of Phoenix, Chandler, Beardsley, Circle City, Sun City West, Tempe, Wittmann, Mesa, Gilbert, Peoria, Paradise Valley, and Surprise 1048 AM MST Wed Aug 19 2026 ...EXTREME HEAT WARNING NOW IN EFFECT UNTIL 8 PM MST SUNDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 108 to 111. Major Heat Risk. * WHERE...The Phoenix metropolitan area. * WHEN...Until 8 PM MST Sunday. * 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 PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. && $$ AZZ560-200600- /O.EXT.KPSR.XH.W.0008.000000T0000Z-260824T0300Z/ San Carlos- Including the cities of San Carlos and Peridot 1048 AM MST Wed Aug 19 2026 ...EXTREME HEAT WARNING NOW IN EFFECT UNTIL 8 PM MST SUNDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 102 to 108 expected. Major Heat Risk. * WHERE...San Carlos. * WHEN...Until 8 PM MST Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Extreme Heat Warning means that a period of very hot temperatures, even by local standards, will occur. Actions should be taken to lessen the impact of the extreme heat. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose-fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Public cooling shelters are available in some areas. Consult county officials for more details. && $$ AR