457
WWUS76 KSGX 090411
NPWSGX
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN DIEGO CA
911 PM PDT SAT AUG 8 2026
CAZ060-091315-
/O.CON.KSGX.XH.W.0007.000000T0000Z-260810T0300Z/
APPLE AND LUCERNE VALLEYS-
INCLUDING THE CITIES OF APPLE VALLEY, HESPERIA, VICTORVILLE, AND
LUCERNE VALLEY
911 PM PDT SAT AUG 8 2026
..EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT SUNDAY
* WHAT...DANGEROUSLY HOT CONDITIONS WITH TEMPERATURES OF 100 TO 110
EXPECTED.
* WHERE...APPLE AND LUCERNE VALLEYS.
* WHEN...UNTIL 8 PM PDT SUNDAY.
* 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.
CAZ061-062-065-091315-
/O.CON.KSGX.XH.W.0007.000000T0000Z-260810T0300Z/
COACHELLA VALLEY-SAN DIEGO COUNTY DESERTS-SAN GORGONIO PASS NEAR
BANNING-
INCLUDING THE CITIES OF INDIO, LA QUINTA, PALM DESERT, COACHELLA,
CATHEDRAL CITY, PALM DESERT COUNTRY, PALM SPRINGS, AND BORREGO
SPRINGS
911 PM PDT SAT AUG 8 2026
..EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT SUNDAY
* WHAT...DANGEROUSLY HOT CONDITIONS WITH HIGH TEMPERATURES OF MID
100S TO LOW 110S EXPECTED.
* WHERE...COACHELLA VALLEY, SAN DIEGO COUNTY DESERTS, AND SAN
GORGONIO PASS NEAR BANNING.
* WHEN...UNTIL 8 PM PDT SUNDAY.
* 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.
CAZ048-091315-
/O.CON.KSGX.HT.Y.0008.000000T0000Z-260810T0300Z/
SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE-
INCLUDING THE CITIES OF MORENO VALLEY, RIVERSIDE, RANCHO
CUCAMONGA, ONTARIO, CORONA, FONTANA, AND SAN BERNARDINO
911 PM PDT SAT AUG 8 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT SUNDAY
* WHAT...HIGH TEMPERATURES IN THE MID 90S TO LOW 100S EXPECTED.
* WHERE...SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND
EMPIRE.
* WHEN...UNTIL 8 PM PDT SUNDAY.
* 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.
CAZ050-091315-
/O.CON.KSGX.HT.Y.0008.000000T0000Z-260810T0300Z/
SAN DIEGO COUNTY VALLEYS-
INCLUDING THE CITIES OF POWAY, ESCONDIDO, SANTEE, EL CAJON, SAN
MARCOS, AND LA MESA
911 PM PDT SAT AUG 8 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT SUNDAY
* WHAT...HIGH TEMPERATURES IN THE LOW TO MID 90S.
* WHERE...SAN DIEGO COUNTY VALLEYS.
* WHEN...UNTIL 8 PM PDT SUNDAY.
* 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.
CAZ055-091315-
/O.CON.KSGX.HT.Y.0008.000000T0000Z-260810T0300Z/
SAN BERNARDINO COUNTY MOUNTAINS-
INCLUDING THE CITIES OF BIG BEAR LAKE, WRIGHTWOOD, BIG BEAR CITY,
CRESTLINE, RUNNING SPRINGS, AND LAKE ARROWHEAD
911 PM PDT SAT AUG 8 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT SUNDAY
* WHAT...HIGH TEMPERATURES IN THE MID 80S TO MID 90S BELOW 6500 FEET
EXPECTED.
* WHERE...SAN BERNARDINO COUNTY MOUNTAINS.
* WHEN...UNTIL 8 PM PDT SUNDAY.
* 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.
CAZ056-091315-
/O.CON.KSGX.HT.Y.0008.000000T0000Z-260810T0300Z/
RIVERSIDE COUNTY MOUNTAINS-
INCLUDING THE CITIES OF IDYLLWILD-PINE COVE
911 PM PDT SAT AUG 8 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT SUNDAY
* WHAT...HIGH TEMPERATURES IN THE MID 80S TO UPPER 90S BELOW 6500
FEET EXPECTED.
* WHERE...RIVERSIDE COUNTY MOUNTAINS.
* WHEN...UNTIL 8 PM PDT SUNDAY.
* 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.
CAZ057-554-091315-
/O.CON.KSGX.HT.Y.0008.000000T0000Z-260810T0300Z/
SANTA ANA MOUNTAINS AND FOOTHILLS-ORANGE COUNTY INLAND AREAS-
INCLUDING THE CITIES OF MISSION VIEJO, FULLERTON, IRVINE, GARDEN
GROVE, ORANGE, SANTA ANA, AND ANAHEIM
911 PM PDT SAT AUG 8 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT SUNDAY
* WHAT...HIGH TEMPERATURES IN THE LOW 90S EAST OF INTERSTATE 5. HIGH
TEMPERATURES IN THE MID-90S IN THE SANTA ANA MOUNTAINS.
* WHERE...ORANGE COUNTY INLAND AREAS AND SANTA ANA MOUNTAINS AND
FOOTHILLS.
* WHEN...UNTIL 8 PM PDT SUNDAY.
* 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.
CAZ058-091315-
/O.CON.KSGX.HT.Y.0008.000000T0000Z-260810T0300Z/
SAN DIEGO COUNTY MOUNTAINS-
INCLUDING THE CITIES OF JULIAN AND PINE VALLEY
911 PM PDT SAT AUG 8 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT SUNDAY
* WHAT...HIGH TEMPERATURES IN THE MID 80S TO UPPER 90S EXPECTED.
* WHERE...SAN DIEGO COUNTY MOUNTAINS.
* WHEN...UNTIL 8 PM PDT SUNDAY.
* 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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