820
WWUS75 KPSR 161819
NPWPSR
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PHOENIX AZ
1119 AM MST SUN AUG 16 2026
AZZ530>533-535-536-CAZ562-565>567-569-570-171000-
/O.CON.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 YUMA, PALO VERDE, BLYTHE, HARCUVAR,
WINTERHAVEN, MARTINEZ LAKE, EHRENBERG, CALEXICO, PLASTER CITY, EL
CENTRO, RIPLEY, SALTON CITY, VICKSBURG JUNCTION, BRENDA, MOUNTAIN
SPRING, MIDLAND, COYOTE WELLS, FORTUNA FOOTHILLS, PARKER, PALM
CANYON, LIGURTA, ALAMORIO, VICKSBURG, BRAWLEY, QUARTZSITE, COOLIDGE
SPRINGS, OCOTILLO, SALOME, AND WINONA
1119 AM MST SUN AUG 16 2026 /1119 AM PDT SUN AUG 16 2026/
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM MST /10 AM PDT/
MONDAY TO 8 PM MST /8 PM PDT/ FRIDAY...
* WHAT...DANGEROUSLY HOT AND HUMID CONDITIONS. AFTERNOON TEMPERATURES
107 TO 114 EXPECTED. 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.
AZZ534-538-539-541-549-553>555-559-171000-
/O.CON.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 AGUILA, TONOPAH, ARLINGTON, WINTERSBURG,
FLORENCE, APACHE JUNCTION, SENTINEL, CACTUS FOREST, GILA BEND,
WICKENBURG, FOUNTAIN HILLS, CASA GRANDE, KAKA, COOLIDGE, HASSAYAMPA,
GLADDEN, AND SCOTTSDALE
1119 AM MST SUN AUG 16 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM MONDAY TO 8 PM
MST FRIDAY...
* WHAT...DANGEROUSLY HOT CONDITIONS. AFTERNOON TEMPERATURES 106 TO
114 EXPECTED. 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, AND TONOPAH DESERT.
* 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.
AZZ537-540-542>544-546-548-550-551-171000-
/O.CON.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 SURPRISE, AVONDALE, TEMPE, SUN CITY WEST,
CIRCLE CITY, GOODYEAR, LIBERTY, PEORIA, PHOENIX, CASHION, MESA,
PARADISE VALLEY, QUEEN CREEK, GILBERT, SUN LAKES, BEARDSLEY,
CHANDLER, AND WITTMANN
1119 AM MST SUN AUG 16 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM MONDAY TO 8 PM
MST FRIDAY...
* WHAT...DANGEROUSLY HOT CONDITIONS. AFTERNOON TEMPERATURES 109 TO
112 EXPECTED. 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.
AZZ560-171000-
/O.CON.KPSR.XH.W.0008.260818T1700Z-260822T0300Z/
SAN CARLOS-
INCLUDING THE CITIES OF SAN CARLOS AND PERIDOT
1119 AM MST SUN AUG 16 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM TUESDAY TO 8 PM
MST FRIDAY...
* WHAT...DANGEROUSLY HOT CONDITIONS. AFTERNOON TEMPERATURES 102 TO
110 EXPECTED. MAJOR TO EXTREME HEAT RISK.
* WHERE...SAN CARLOS.
* WHEN...FROM 10 AM TUESDAY 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.
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
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