747
WWUS76 KSGX 081010
NPWSGX
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN DIEGO CA
310 AM PDT TUE SEP 8 2026
CAZ057-081115-
/O.CAN.KSGX.HT.Y.0011.260908T1700Z-260911T0300Z/
SANTA ANA MOUNTAINS AND FOOTHILLS-
310 AM PDT TUE SEP 8 2026
..HEAT ADVISORY IS CANCELLED
CAZ554-081815-
/O.UPG.KSGX.HT.Y.0011.260908T1700Z-260911T0300Z/
/O.NEW.KSGX.HT.Y.0012.260910T0300Z-260911T0300Z/
/O.EXB.KSGX.XH.W.0009.260908T1010Z-260910T0300Z/
ORANGE COUNTY INLAND AREAS-
INCLUDING THE CITIES OF ANAHEIM, MISSION VIEJO, SANTA ANA, IRVINE,
FULLERTON, ORANGE, AND GARDEN GROVE
310 AM PDT TUE SEP 8 2026
...HEAT ADVISORY IN EFFECT FROM 8 PM WEDNESDAY TO 8 PM PDT
THURSDAY...
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT WEDNESDAY
* WHAT...FOR THE EXTREME HEAT WARNING, DANGEROUSLY HOT CONDITIONS
WITH TEMPERATURES UP TO 97. FOR THE HEAT ADVISORY, TEMPERATURES UP
TO 92 EXPECTED.
* WHERE...ORANGE COUNTY INLAND AREAS.
* WHEN...FOR THE EXTREME HEAT WARNING, UNTIL 8 PM PDT WEDNESDAY. FOR
THE HEAT ADVISORY, FROM 8 PM WEDNESDAY TO 8 PM PDT THURSDAY.
* IMPACTS...HEAT RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING
EXTREME HEAT EVENTS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DRINK PLENTY OF FLUIDS, STAY IN AN AIR-CONDITIONED ROOM, STAY OUT OF
THE SUN, AND CHECK UP ON RELATIVES AND NEIGHBORS.
CAZ043-552-081815-
/O.EXB.KSGX.XH.W.0009.260908T1010Z-260910T0200Z/
/O.EXT.KSGX.HT.Y.0011.260910T0300Z-260911T0300Z/
SAN DIEGO COUNTY COASTAL AREAS-ORANGE COUNTY COASTAL AREAS-
INCLUDING THE CITIES OF OCEANSIDE, NATIONAL CITY, COSTA MESA, VISTA,
SAN DIEGO, CARLSBAD, ENCINITAS, HUNTINGTON BEACH, AND CHULA VISTA
310 AM PDT TUE SEP 8 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 7 PM PDT WEDNESDAY
...HEAT ADVISORY NOW IN EFFECT FROM 8 PM WEDNESDAY TO 8 PM PDT
THURSDAY...
* WHAT...FOR THE EXTREME HEAT WARNING, DANGEROUSLY HOT CONDITIONS
WITH TEMPERATURES UP TO 92. FOR THE HEAT ADVISORY, TEMPERATURES UP
TO 89 EXPECTED.
* WHERE...ORANGE COUNTY COASTAL AREAS AND SAN DIEGO COUNTY COASTAL
AREAS.
* WHEN...FOR THE EXTREME HEAT WARNING, UNTIL 7 PM PDT WEDNESDAY. FOR
THE HEAT ADVISORY, FROM 8 PM WEDNESDAY TO 8 PM PDT THURSDAY.
* IMPACTS...HEAT RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING
EXTREME HEAT EVENTS. HOT TEMPERATURES MAY CAUSE HEAT ILLNESSES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DRINK PLENTY OF FLUIDS, STAY IN AN AIR-CONDITIONED ROOM, STAY OUT OF
THE SUN, AND CHECK UP ON RELATIVES AND NEIGHBORS.
CAZ048-081815-
/O.EXB.KSGX.XH.W.0009.260908T1010Z-260910T0300Z/
/O.EXT.KSGX.HT.Y.0011.260910T0300Z-260911T0300Z/
SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE-
INCLUDING THE CITIES OF MORENO VALLEY, RIVERSIDE, ONTARIO, FONTANA,
SAN BERNARDINO, CORONA, AND RANCHO CUCAMONGA
310 AM PDT TUE SEP 8 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT WEDNESDAY
...HEAT ADVISORY NOW IN EFFECT FROM 8 PM WEDNESDAY TO 8 PM PDT
THURSDAY...
* WHAT...FOR THE EXTREME HEAT WARNING, DANGEROUSLY HOT CONDITIONS
WITH TEMPERATURES UP TO 100. FOR THE HEAT ADVISORY, TEMPERATURES UP
TO 98 EXPECTED.
* WHERE...SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND
EMPIRE.
* WHEN...FOR THE EXTREME HEAT WARNING, UNTIL 8 PM PDT WEDNESDAY. FOR
THE HEAT ADVISORY, FROM 8 PM WEDNESDAY TO 8 PM PDT THURSDAY.
* IMPACTS...HEAT RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING
EXTREME HEAT EVENTS. HOT TEMPERATURES MAY CAUSE HEAT ILLNESSES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DRINK PLENTY OF FLUIDS, STAY IN AN AIR-CONDITIONED ROOM, STAY OUT OF
THE SUN, AND CHECK UP ON RELATIVES AND NEIGHBORS.
DO NOT LEAVE YOUNG CHILDREN AND PETS IN UNATTENDED VEHICLES. CAR
INTERIORS WILL REACH LETHAL TEMPERATURES IN A MATTER OF MINUTES.
IF YOU DO NOT HAVE AIR CONDITIONING IN YOUR HOME OR LACK SHELTER, YOU
CAN CALL 211 OR VISIT 211CA.ORG FOR ASSISTANCE LOCATING APPROPRIATE
SHELTER FROM THE HEAT.
CAZ050-081815-
/O.EXB.KSGX.XH.W.0009.260908T1010Z-260910T0300Z/
/O.EXT.KSGX.HT.Y.0011.260910T0300Z-260911T0300Z/
SAN DIEGO COUNTY VALLEYS-
INCLUDING THE CITIES OF ESCONDIDO, POWAY, SAN MARCOS, LA MESA, EL
CAJON, AND SANTEE
310 AM PDT TUE SEP 8 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT WEDNESDAY
...HEAT ADVISORY NOW IN EFFECT FROM 8 PM WEDNESDAY TO 8 PM PDT
THURSDAY...
* WHAT...FOR THE EXTREME HEAT WARNING, DANGEROUSLY HOT CONDITIONS
WITH TEMPERATURES UP TO 98. FOR THE HEAT ADVISORY, TEMPERATURES UP
TO 96 EXPECTED.
* WHERE...SAN DIEGO COUNTY VALLEYS.
* WHEN...FOR THE EXTREME HEAT WARNING, UNTIL 8 PM PDT WEDNESDAY. FOR
THE HEAT ADVISORY, FROM 8 PM WEDNESDAY TO 8 PM PDT THURSDAY.
* IMPACTS...HEAT RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING
EXTREME HEAT EVENTS. HOT TEMPERATURES MAY CAUSE HEAT ILLNESSES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DRINK PLENTY OF FLUIDS, STAY IN AN AIR-CONDITIONED ROOM, STAY OUT OF
THE SUN, AND CHECK UP ON RELATIVES AND NEIGHBORS.
CAZ061-062-065-081815-
/O.CON.KSGX.XH.W.0009.260909T1700Z-260912T0300Z/
COACHELLA VALLEY-SAN DIEGO COUNTY DESERTS-SAN GORGONIO PASS NEAR
BANNING-
INCLUDING THE CITIES OF BANNING, LA QUINTA, PALM DESERT, PALM DESERT
COUNTRY, INDIO, BORREGO SPRINGS, CATHEDRAL CITY, COACHELLA, DESERT
HOT SPRINGS, AND PALM SPRINGS
310 AM PDT TUE SEP 8 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO 8
PM PDT FRIDAY...
* WHAT...DANGEROUSLY HOT CONDITIONS WITH TEMPERATURES UP TO 109
EXPECTED.
* WHERE...COACHELLA VALLEY, SAN DIEGO COUNTY DESERTS, AND SAN
GORGONIO PASS NEAR BANNING.
* WHEN...FROM 10 AM WEDNESDAY TO 8 PM PDT FRIDAY.
* IMPACTS...HEAT RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING
EXTREME HEAT EVENTS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DRINK PLENTY OF FLUIDS, STAY IN AN AIR-CONDITIONED ROOM, STAY OUT OF
THE SUN, AND CHECK UP ON RELATIVES AND NEIGHBORS.
CAZ056-058-081815-
/O.CON.KSGX.HT.Y.0011.260908T1700Z-260911T0300Z/
RIVERSIDE COUNTY MOUNTAINS-SAN DIEGO COUNTY MOUNTAINS-
INCLUDING THE CITIES OF PINE VALLEY AND JULIAN
310 AM PDT TUE SEP 8 2026
...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM
PDT THURSDAY...
* WHAT...TEMPERATURES UP TO 93 EXPECTED.
* WHERE...RIVERSIDE COUNTY MOUNTAINS AND SAN DIEGO COUNTY MOUNTAINS.
* WHEN...FROM 10 AM THIS MORNING TO 8 PM PDT THURSDAY.
* IMPACTS...HOT TEMPERATURES MAY CAUSE HEAT ILLNESSES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DRINK PLENTY OF FLUIDS, STAY IN AN AIR-CONDITIONED ROOM, STAY OUT OF
THE SUN, AND CHECK UP ON RELATIVES AND NEIGHBORS.
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