Headline:
Extreme Heat Warning issued August 2 at 8:59PM MST until August 3 at 8:00PM MST by NWS Tucson AZ
Event:
Extreme Heat Warning
Urgency:
Expected
Effective:
August 2, 2026 - 8:59pm
Expires:
August 3, 2026 - 8:00pm
Description:
* WHAT...Thunderstorms will initially develop over the Mogollon Rim
and other sky islands of Southeast Arizona during the early
afternoon hours, then track southwest into the valleys of Southeast
Arizona and become widespread during the late afternoon and early
evening. The stronger storms will produce organized thunderstorm
outflow winds between 40-50 mph, resulting in dense blowing dust
with visibility between one-half and one mile and possibly a haboob
with near-zero visibility. For the Extreme Heat Warning,
dangerously hot conditions with temperatures 101 to 106 in Santa
Cruz and Cochise counties and 107 to 112 elsewhere. 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...For the Extreme Heat Warning, until 8 PM MST Monday. For the
Blowing Dust Advisory, from 2 PM to 8 PM MST Monday.
* IMPACTS...Hazardous driving conditions due to reduced visibility.
Heat related illnesses increase significantly during extreme heat
events.
* ADDITIONAL DETAILS...Warm overnight low temperatures of 84 to 90
degrees in the deserts will provide little to no relief from heat
overnight. Warmest overnight low temperatures expected in the
Western Deserts.
Instruction:
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
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.
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.
Area Description:
Upper Santa Cruz River and Altar Valleys including Nogales; Tucson Metro Area including Tucson/Green Valley/Marana/Vail; Upper San Pedro River Valley including Sierra Vista/Benson; Eastern Cochise County Below 5000 Feet including Douglas/Willcox; Upper Gila River and Aravaipa Valleys including Clifton/Safford
Forcast Office:
NWS Tucson AZ
Sender:
w-nws.webmaster@noaa.gov