443
WWUS75 KPSR 101823
NPWPSR
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PHOENIX AZ
1123 AM MST THU SEP 10 2026
AZZ530-533-CAZ569-570-111200-
/O.CON.KPSR.XH.W.0009.000000T0000Z-260912T0300Z/
PARKER VALLEY-CENTRAL LA PAZ-PALO VERDE VALLEY-CHUCKWALLA VALLEY-
INCLUDING THE CITIES OF RIPLEY, MIDLAND, EHRENBERG, VICKSBURG
JUNCTION, VICKSBURG, MARTINEZ LAKE, PALO VERDE, QUARTZSITE, HARCUVAR,
PARKER, SALOME, BRENDA, AND BLYTHE
1123 AM MST THU SEP 10 2026 /1123 AM PDT THU SEP 10 2026/
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST /8 PM PDT/
FRIDAY...
* WHAT...DANGEROUSLY HOT AND HUMID CONDITIONS. AFTERNOON TEMPERATURES
102 TO 112 EXPECTED. MAJOR HEAT RISK.
* WHERE...IN ARIZONA, CENTRAL LA PAZ AND PARKER VALLEY. IN
CALIFORNIA, CHUCKWALLA VALLEY AND PALO VERDE VALLEY.
* WHEN...UNTIL 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.
AZZ531-535-536-538-539-559-110300-
/O.CON.KPSR.XH.W.0009.000000T0000Z-260911T0300Z/
KOFA-SOUTHEAST YUMA COUNTY-GILA RIVER VALLEY-TONOPAH DESERT-GILA
BEND-SONORAN DESERT NATL MONUMENT-
INCLUDING THE CITIES OF HASSAYAMPA, WINTERSBURG, PALM CANYON,
ARLINGTON, TONOPAH, KAKA, GILA BEND, LIGURTA, AND SENTINEL
1123 AM MST THU SEP 10 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS
EVENING...
* WHAT...DANGEROUSLY HOT CONDITIONS. AFTERNOON TEMPERATURES 105 TO
110 EXPECTED. MAJOR HEAT RISK.
* WHERE...GILA BEND, SONORAN DESERT NATL MONUMENT, TONOPAH DESERT,
GILA RIVER VALLEY, KOFA, AND SOUTHEAST YUMA COUNTY.
* WHEN...UNTIL 8 PM MST THIS 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.
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.
AZZ532-111200-
/O.CON.KPSR.XH.W.0009.000000T0000Z-260912T0300Z/
YUMA-
INCLUDING THE CITIES OF YUMA AND FORTUNA FOOTHILLS
1123 AM MST THU SEP 10 2026
..EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST FRIDAY
* WHAT...DANGEROUSLY HOT AND HUMID CONDITIONS. AFTERNOON TEMPERATURES
106 TO 110 EXPECTED. MAJOR HEAT RISK.
* WHERE...THE YUMA AREA.
* WHEN...UNTIL 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.
AZZ537-540>544-546-548>551-110300-
/O.CON.KPSR.XH.W.0009.000000T0000Z-260911T0300Z/
NORTHWEST VALLEY-BUCKEYE/AVONDALE-CAVE CREEK/NEW RIVER-DEER
VALLEY-CENTRAL PHOENIX-NORTH PHOENIX/GLENDALE-SCOTTSDALE/PARADISE
VALLEY-EAST VALLEY-FOUNTAIN HILLS/EAST MESA-SOUTH
MOUNTAIN/AHWATUKEE-SOUTHEAST VALLEY/QUEEN CREEK-
INCLUDING THE CITIES OF GOODYEAR, BEARDSLEY, CIRCLE CITY, AVONDALE,
PEORIA, PARADISE VALLEY, LIBERTY, GILBERT, PHOENIX, WITTMANN, TEMPE,
QUEEN CREEK, SCOTTSDALE, CASHION, SUN LAKES, SUN CITY WEST, FOUNTAIN
HILLS, CHANDLER, MESA, AND SURPRISE
1123 AM MST THU SEP 10 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS
EVENING...
* WHAT...DANGEROUSLY HOT CONDITIONS. AFTERNOON TEMPERATURES 105 TO
109 EXPECTED. MAJOR HEAT RISK.
* WHERE...THE PHOENIX METROPOLITAN AREA.
* WHEN...UNTIL 8 PM MST THIS 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.
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.
CAZ562-566-567-111200-
/O.CON.KPSR.XH.W.0009.000000T0000Z-260912T0300Z/
IMPERIAL COUNTY SOUTHWEST-IMPERIAL COUNTY WEST-IMPERIAL VALLEY-
INCLUDING THE CITIES OF SALTON CITY, MOUNTAIN SPRING, EL CENTRO,
ALAMORIO, COYOTE WELLS, COOLIDGE SPRINGS, CALEXICO, BRAWLEY, PLASTER
CITY, WINONA, AND OCOTILLO
1123 AM PDT THU SEP 10 2026
..EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY
* WHAT...DANGEROUSLY HOT AND HUMID CONDITIONS. AFTERNOON TEMPERATURES
108 TO 115 EXPECTED. MAJOR HEAT RISK.
* WHERE...PORTIONS OF IMPERIAL COUNTY, INCLUDING THE IMPERIAL VALLEY.
* WHEN...UNTIL 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.
AR
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