WWUS75 KPSR 102141 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 241 PM MST Sun May 10 2026 AZZ537-540-542>544-546-548-550-551-111200- /O.CON.KPSR.XH.W.0002.000000T0000Z-260513T0300Z/ Northwest Valley-Buckeye/Avondale-Deer Valley-Central Phoenix- North Phoenix/Glendale-Scottsdale/Paradise Valley-East Valley- South Mountain/Ahwatukee-Southeast Valley/Queen Creek- Including the cities of Avondale, Queen Creek, Gilbert, Surprise, Beardsley, Goodyear, Sun Lakes, Peoria, Wittmann, Mesa, Chandler, Phoenix, Circle City, Paradise Valley, Sun City West, Liberty, Tempe, and Cashion 241 PM MST Sun May 10 2026 ...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST TUESDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 104 to 110 expected. Major Heat Risk. * WHERE...The greater Phoenix Metro area. * WHEN...Until 8 PM MST Tuesday. * 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. http://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. && $$ CAZ562-563-566-111200- /O.CON.KPSR.XH.W.0002.000000T0000Z-260512T0300Z/ Imperial County Southwest-Salton Sea-Imperial County West- Including the cities of Winona, Mountain Spring, Plaster City, Salton City, Ocotillo, Desert Shores, Coolidge Springs, and Coyote Wells 241 PM PDT Sun May 10 2026 ...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 100 to 114 expected. Major Heat Risk. * WHERE...Southwest corner of Imperial County, Western Imperial County, and Salton Sea. * WHEN...Until 8 PM PDT Monday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Extreme Heat Warning means that a period of very hot temperatures, even by local standards, will occur. Actions should be taken to lessen the impact of the extreme heat. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose-fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Public cooling shelters are available in some areas. Consult county officials for more details. && $$ AZZ530-532-CAZ567-569-570-111200- /O.CON.KPSR.XH.W.0002.260511T1800Z-260512T0300Z/ Parker Valley-Yuma-Imperial Valley-Palo Verde Valley-Chuckwalla Valley- Including the cities of Ehrenberg, Blythe, Parker, Yuma, Ripley, Midland, Brawley, Palo Verde, El Centro, Calexico, Fortuna Foothills, Martinez Lake, and Alamorio 241 PM MST Sun May 10 2026 /241 PM PDT Sun May 10 2026/ ...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 11 AM MST /11 AM PDT/ TO 8 PM MST /8 PM PDT/ MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 106 to 112 expected. Major Heat Risk. * WHERE...In Arizona, Parker Valley and Yuma. In California, Chuckwalla Valley, Imperial Valley, and Palo Verde Valley. * WHEN...From 11 AM MST /11 AM PDT/ to 8 PM MST /8 PM PDT/ Monday. * 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. && $$ MS