153
WWUS76 KSGX 082052
NPWSGX
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN DIEGO CA
152 PM PDT TUE SEP 8 2026
CAZ043-552-090530-
/O.CON.KSGX.XH.W.0009.000000T0000Z-260910T0300Z/
/O.CON.KSGX.HT.Y.0011.260910T0300Z-260911T0300Z/
SAN DIEGO COUNTY COASTAL AREAS-ORANGE COUNTY COASTAL AREAS-
INCLUDING THE CITIES OF CHULA VISTA, OCEANSIDE, VISTA, HUNTINGTON
BEACH, CARLSBAD, SAN DIEGO, COSTA MESA, ENCINITAS, AND NATIONAL CITY
152 PM PDT TUE SEP 8 2026
..EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY
...HEAT ADVISORY REMAINS IN EFFECT FROM 8 PM WEDNESDAY TO 8 PM PDT
THURSDAY...
* WHAT...FOR THE EXTREME HEAT WARNING, DANGEROUSLY HOT CONDITIONS
WITH HIGH TEMPERATURES IN THE MID 80S AT THE BEACHES TO 90S FOR
HIGHER COASTAL TERRAIN WITH LOW TEMPERATURES IN THE LOWER TO MID
70S. FOR THE HEAT ADVISORY, HIGH TEMPERATURES AROUND 80 NEAR THE
COAST TO THE LOWER TO MID 90S FOR HIGHER COASTAL TERRAIN.
* WHERE...ORANGE COUNTY COASTAL AREAS AND SAN DIEGO COUNTY COASTAL
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. HOT TEMPERATURES MAY CAUSE HEAT ILLNESSES.
* ADDITIONAL DETAILS...MAJOR TO EXTREME HEATRISK THROUGH WEDNESDAY.
WARM OVERNIGHT LOW TEMPERATURE WILL LIMIT RELIEF FROM THE HEAT.
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.
CAZ048-090530-
/O.CON.KSGX.XH.W.0009.000000T0000Z-260910T0300Z/
/O.CON.KSGX.HT.Y.0011.260910T0300Z-260911T0300Z/
SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE-
INCLUDING THE CITIES OF ONTARIO, RIVERSIDE, RANCHO CUCAMONGA, CORONA,
MORENO VALLEY, FONTANA, AND SAN BERNARDINO
152 PM PDT TUE SEP 8 2026
..EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY
...HEAT ADVISORY REMAINS IN EFFECT FROM 8 PM WEDNESDAY TO 8 PM PDT
THURSDAY...
* WHAT...FOR THE EXTREME HEAT WARNING, DANGEROUSLY HOT CONDITIONS
WITH TEMPERATURES HIGH TEMPERATURES IN THE UPPER 90S TO 107 WITH
LOW TEMPERATURES IN THE 70S EXPECTED. FOR THE HEAT ADVISORY, HIGH
TEMPERATURES IN THE MID 90S TO 102 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.
* ADDITIONAL DETAILS...MAJOR HEATRISK THROUGH WEDNESDAY. WARM
OVERNIGHT TEMPERATURES WILL LIMIT OVERNIGHT RELIEF FROM THE HEAT.
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.
CAZ050-090530-
/O.CON.KSGX.XH.W.0009.000000T0000Z-260910T0300Z/
/O.CON.KSGX.HT.Y.0011.260910T0300Z-260911T0300Z/
SAN DIEGO COUNTY VALLEYS-
INCLUDING THE CITIES OF SAN MARCOS, SANTEE, LA MESA, POWAY,
ESCONDIDO, AND EL CAJON
152 PM PDT TUE SEP 8 2026
..EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY
...HEAT ADVISORY REMAINS IN EFFECT FROM 8 PM WEDNESDAY TO 8 PM PDT
THURSDAY...
* WHAT...FOR THE EXTREME HEAT WARNING, DANGEROUSLY HOT CONDITIONS
WITH HIGH TEMPERATURES IN THE MID 90S TO 106 WITH LOW TEMPERATURES
IN THE 70S EXPECTED. FOR THE HEAT ADVISORY, HIGH TEMPERATURES IN
THE 90S TO 102 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.
* ADDITIONAL DETAILS...MAJOR TO LOCALLY EXTREME HEATRISK. ELEVATED
LOWS WILL LIMIT OVERNIGHT RELIEF FROM THE HEAT.
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.
CAZ057-090530-
/O.CON.KSGX.XH.W.0009.000000T0000Z-260910T0300Z/
/O.CON.KSGX.HT.Y.0012.260910T0300Z-260911T0300Z/
SANTA ANA MOUNTAINS AND FOOTHILLS-
152 PM PDT TUE SEP 8 2026
..EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY
...HEAT ADVISORY REMAINS IN EFFECT FROM 8 PM WEDNESDAY TO 8 PM PDT
THURSDAY...
* WHAT...FOR THE EXTREME HEAT WARNING, DANGEROUSLY HOT CONDITIONS
WITH HIGH TEMPERATURES IN THE 90S TO NEAR 100 WITH LOW TEMPERATURES
IN THE 70S EXPECTED. FOR THE HEAT ADVISORY, HIGH TEMPERATURES IN
THE MID 80S TO LOW 90S EXPECTED.
* WHERE...SANTA ANA MOUNTAINS AND FOOTHILLS.
* 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.
* ADDITIONAL DETAILS...AREAS OF MAJOR HEATRISK. VERY WARM OVERNIGHT
TEMPERATURES WILL LIMIT RELIEF FROM THE HEAT.
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.
TAKE EXTRA PRECAUTIONS WHEN OUTSIDE. WEAR LIGHTWEIGHT AND LOOSE
FITTING CLOTHING. TRY TO LIMIT STRENUOUS ACTIVITIES TO EARLY MORNING
OR EVENING. TAKE ACTION WHEN YOU SEE SYMPTOMS OF HEAT EXHAUSTION AND
HEAT STROKE.
CAZ554-090530-
/O.CON.KSGX.XH.W.0009.000000T0000Z-260910T0300Z/
/O.CON.KSGX.HT.Y.0012.260910T0300Z-260911T0300Z/
ORANGE COUNTY INLAND AREAS-
INCLUDING THE CITIES OF MISSION VIEJO, ORANGE, ANAHEIM, GARDEN GROVE,
FULLERTON, SANTA ANA, AND IRVINE
152 PM PDT TUE SEP 8 2026
..EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY
...HEAT ADVISORY REMAINS IN EFFECT FROM 8 PM WEDNESDAY TO 8 PM PDT
THURSDAY...
* WHAT...FOR THE EXTREME HEAT WARNING, DANGEROUSLY HOT CONDITIONS
WITH HIGH TEMPERATURES IN THE 90S TO NEAR 101 WITH LOW TEMPERATURES
IN THE 70S EXPECTED. FOR THE HEAT ADVISORY, HIGH TEMPERATURES IN
THE UPPER 80S TO MID 90S 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.
* ADDITIONAL DETAILS...MAJOR HEATRISK. WARM OVERNIGHT TEMPERATURES
WILL LIMIT RELIEF FROM THE HEAT.
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.
CAZ061-062-065-090530-
/O.CON.KSGX.XH.W.0009.260909T1700Z-260912T0300Z/
COACHELLA VALLEY-SAN DIEGO COUNTY DESERTS-SAN GORGONIO PASS NEAR
BANNING-
INCLUDING THE CITIES OF INDIO, BANNING, CATHEDRAL CITY, BORREGO
SPRINGS, COACHELLA, PALM DESERT, DESERT HOT SPRINGS, PALM SPRINGS,
PALM DESERT COUNTRY, AND LA QUINTA
152 PM 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 HIGH TEMPERATURES OF 106 TO
110 EXPECTED WITH LOW TEMPERATURES IN THE 80S 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.
* ADDITIONAL DETAILS...AREAS OF MAJOR HEATRISK. VERY WARM OVERNIGHT
TEMPERATURES WILL LIMIT RELIEF FROM THE HEAT.
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.
CAZ056-058-090530-
/O.CON.KSGX.HT.Y.0011.000000T0000Z-260911T0300Z/
RIVERSIDE COUNTY MOUNTAINS-SAN DIEGO COUNTY MOUNTAINS-
INCLUDING THE CITIES OF JULIAN AND PINE VALLEY
152 PM PDT TUE SEP 8 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY
* WHAT...HIGH TEMPERATURES IN THE 90S BELOW 5500 FEET EXPECTED.
* WHERE...RIVERSIDE COUNTY MOUNTAINS AND SAN DIEGO COUNTY MOUNTAINS.
* WHEN...UNTIL 8 PM PDT THURSDAY.
* IMPACTS...HOT TEMPERATURES MAY CAUSE HEAT ILLNESSES.
* ADDITIONAL DETAILS...MODERATE HEATRISK. WARM OVERNIGHT TEMPERATURES
WILL LIMIT RELIEF FROM THE HEAT.
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.
KW
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