Extreme Heat Warning
URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
1005 AM MST Sat Aug 15 2026
AZZ530>533-535-536-CAZ562-565>567-569-570-161000-
/O.UPG.KPSR.XH.A.0006.260818T1700Z-260822T0300Z/
/O.NEW.KPSR.XH.W.0008.260817T1700Z-260822T0300Z/
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 Martinez Lake, El Centro, Midland, Yuma,
Winterhaven, Coolidge Springs, Ocotillo, Coyote Wells, Vicksburg,
Brawley, Mountain Spring, Plaster City, Harcuvar, Palo Verde,
Quartzsite, Winona, Blythe, Vicksburg Junction, Ehrenberg, Fortuna
Foothills, Palm Canyon, Ripley, Ligurta, Alamorio, Brenda, Salton
City, Calexico, Salome, and Parker
1005 AM MST Sat Aug 15 2026 /1005 AM PDT Sat Aug 15 2026/
...EXTREME HEAT WARNING IN EFFECT FROM 10 AM MST /10 AM PDT/ MONDAY
TO 8 PM MST /8 PM PDT/ FRIDAY...
* WHAT...Dangerously hot and humid conditions expected. Afternoon
temperatures 108 to 114. Major Heat Risk.
* WHERE...Portions of southwest Arizona and southeast California.
* WHEN...From 10 AM MST /10 AM PDT/ Monday to 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.
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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
1005 AM MST Sat Aug 15 2026
AZZ534-538-539-541-549-553>555-559-161000-
/O.UPG.KPSR.XH.A.0006.260817T1700Z-260822T0300Z/
/O.NEW.KPSR.XH.W.0008.260817T1700Z-260822T0300Z/
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 Arlington, Scottsdale, Gladden, Tonopah,
Sentinel, Apache Junction, Coolidge, Hassayampa, Casa Grande,
Fountain Hills, Cactus Forest, Aguila, Kaka, Florence, Wintersburg,
Gila Bend, and Wickenburg
1005 AM MST Sat Aug 15 2026
...EXTREME HEAT WARNING IN EFFECT FROM 10 AM MONDAY TO 8 PM MST
FRIDAY...
* WHAT...Dangerously hot conditions expected. Afternoon temperatures
106 to 114. 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 10 AM Monday to 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
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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
1005 AM MST Sat Aug 15 2026
AZZ537-540-542>544-546-548-550-551-161000-
/O.UPG.KPSR.XH.A.0006.260817T1700Z-260822T0300Z/
/O.NEW.KPSR.XH.W.0008.260817T1700Z-260822T0300Z/
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 Paradise Valley, Avondale, Liberty, Chandler,
Beardsley, Wittmann, Phoenix, Mesa, Circle City, Tempe, Sun Lakes,
Surprise, Cashion, Goodyear, Gilbert, Sun City West, Peoria, and
Queen Creek
1005 AM MST Sat Aug 15 2026
...EXTREME HEAT WARNING IN EFFECT FROM 10 AM MONDAY TO 8 PM MST
FRIDAY...
* WHAT...Dangerously hot conditions expected. Afternoon temperatures
109 to 113 and overnight lows 88 to 92. Major Heat Risk.
* WHERE...The Phoenix metropolitan area.
* WHEN...From 10 AM Monday to 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
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.
&&
$$
SB
URGENT - WEATHER MESSAGE
National Weather Service Tucson AZ
912 AM MST Sat Aug 15 2026
AZZ501-502-504>506-509-161200-
/O.UPG.KTWC.XH.A.0004.260817T1700Z-260820T0300Z/
/O.NEW.KTWC.XH.W.0006.260817T1700Z-260822T0300Z/
Western Pima County-Tohono O`odham Nation-Tucson Metro Area-South
Central Pinal County-Southeast Pinal County-Upper Gila River
Valley-
Including the cities of Safford, Organ Pipe Cactus N.M., Mammoth,
Vail, Clifton, Ajo, Oracle, Sells, Marana, Tucson, Picacho Peak State
Park, and Green Valley
912 AM MST Sat Aug 15 2026
...EXTREME HEAT WARNING IN EFFECT FROM 10 AM MONDAY TO 8 PM MST
FRIDAY...
* WHAT...Dangerously hot conditions with high temperatures ranging
between 103 to 110 degrees and low temperatures 79 to 85 degrees.
Major HeatRisk is expected.
* WHERE...South Central Pinal County, Southeast Pinal County, Tohono
O`odham Nation, Tucson Metro Area, Upper Gila River Valley, and
Western Pima County.
* WHEN...From 10 AM Monday to 8 PM MST Friday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when possible and
drink plenty of water.
&&
$$
AWH
