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Extreme Heat Watch

Status

Event Continued Active alert

Start Time

Mon 08/17/2026 01:00 PM EDT

End Time

Wed 08/19/2026 11:00 PM EDT

Significance

Watch

Impacts

Moderate impact

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 1219 PM MST Fri Aug 14 2026 ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM MONDAY MORNING THROUGH WEDNESDAY EVENING... * WHAT...Dangerously hot conditions possible. Afternoon temperatures 106 to 113. 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, Tonopah Desert, and West Pinal County. * WHEN...From Monday morning through Wednesday evening. * 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 Watch means that a period of very hot temperatures, even by local standards, may 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.

Technical Header

AZZ534-538-539-541-549-553>555-559-151200- /O.CON.KPSR.XH.A.0006.260817T1700Z-260820T0300Z/ Aguila Valley-Tonopah Desert-Gila Bend-Cave Creek/New River- Fountain Hills/East Mesa-Northwest Pinal County-West Pinal County- Apache Junction/Gold Canyon-Sonoran Desert Natl Monument- Including the cities of Sentinel, Apache Junction, Florence, Hassayampa, Wickenburg, Aguila, Coolidge, Cactus Forest, Casa Grande, Gila Bend, Tonopah, Kaka, Wintersburg, Fountain Hills, Scottsdale, Gladden, and Arlington 1219 PM MST Fri Aug 14 2026