Non-Precipitation Warnings / Watches / Advisories
Issued by NWS Phoenix, AZ

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148
WWUS75 KPSR 171854
NPWPSR

URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
1154 AM MST Sun Aug 17 2025

AZZ530>533-535-536-CAZ560>570-181000-
/O.NEW.KPSR.XH.A.0005.250820T1700Z-250823T0300Z/
Parker Valley-Kofa-Yuma-Central La Paz-Southeast Yuma County-Gila
River Valley-Joshua Tree NP West-Joshua Tree NP East-Imperial
County Southwest-Salton Sea-Chuckwalla Mountains-Imperial County
Southeast-Imperial County West-Imperial Valley-Chiriaco Summit-
Palo Verde Valley-Chuckwalla Valley-
Including the cities of Harcuvar, Vicksburg Junction, Ehrenberg,
Mountain Spring, Parker, Brenda, Fortuna Foothills, Lost
Horse-Keys Village, Martinez Lake, Winona, Brawley, El Centro,
Calexico, Quartzsite, Salome, Alamorio, Yuma, Midland,
Winterhaven, Coolidge Springs, Salton City, Coyote Wells,
Imperial Hot Mineral Springs, Palo Verde, Plaster City, Chiriaco
Summit, Cottonwood Visitor, Desert Shores, Ligurta, Ripley,
Ocotillo, Palm Canyon, Blythe, and Vicksburg
1154 AM MST Sun Aug 17 2025 /1154 AM PDT Sun Aug 17 2025/

...EXTREME HEAT WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH
FRIDAY EVENING...

* WHAT...Dangerously hot conditions possible. Afternoon temperatures
  106 to 116. Major Heat Risk.

* WHERE...Portions of southwest Arizona and southeast and southern
  California.

* WHEN...From Wednesday morning through Friday 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.

&&

$$

AZZ534-538-539-541-545-547-549-552>556-559-560-562-181000-
/O.NEW.KPSR.XH.A.0005.250820T1700Z-250823T0300Z/
Aguila Valley-Tonopah Desert-Gila Bend-Cave Creek/New River-New
River Mesa-Rio Verde/Salt River-Fountain Hills/East Mesa-Superior-
Northwest Pinal County-West Pinal County-Apache Junction/Gold
Canyon-Tonto Basin-Sonoran Desert Natl Monument-San Carlos-
Globe/Miami-
Including the cities of Fountain Hills, Globe, Gila Bend,
Wintersburg, Punkin Center, Apache Junction, Hassayampa, Cactus
Forest, Tonopah, Casa Grande, San Carlos, Peridot, Aguila, Kaka,
Wickenburg, Gladden, Miami, Florence, Coolidge, Scottsdale,
Superior, Arlington, Sentinel, and Tortilla Flat
1154 AM MST Sun Aug 17 2025

...EXTREME HEAT WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH
FRIDAY EVENING...

* WHAT...Dangerously hot conditions possible. Afternoon temperatures
  106 to 114. Major Heat Risk.

* WHERE...A portion of south central Arizona.

* WHEN...From Wednesday morning through Friday 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.

&&

$$

AZZ537-540-542>544-546-548-550-551-181000-
/O.NEW.KPSR.XH.A.0005.250820T1700Z-250823T0300Z/
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, Surprise, Cashion, Goodyear,
Wittmann, Peoria, Phoenix, Beardsley, Chandler, Paradise Valley,
Queen Creek, Circle City, Tempe, Mesa, Liberty, Gilbert, Sun
Lakes, and Sun City West
1154 AM MST Sun Aug 17 2025

...EXTREME HEAT WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH
FRIDAY EVENING...

* WHAT...Dangerously hot conditions possible. Afternoon temperatures
  109 to 114. Major Heat Risk.

* WHERE...The Northwest Valley of the Phoenix Metro Area, The East
  Valley of the Phoenix Metro Area, Buckeye/Avondale, Deer Valley,
  Central Phoenix, North Phoenix/Glendale, Scottsdale/Paradise
  Valley, South Mountain/Ahwatukee, and Southeast Valley/Queen Creek.

* WHEN...From Wednesday morning through Friday 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.

* ADDITIONAL DETAILS...In Maricopa County, call 2-1-1 to find a free
  cooling center, transportation, water, and more.


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.

&&

$$