402
WWUS76 KSGX 111842
NPWSGX
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN DIEGO CA
1142 AM PDT WED MAR 11 2026
CAZ043-048-050-552-554-120615-
/O.CON.KSGX.HT.Y.0001.260312T1700Z-260314T0300Z/
SAN DIEGO COUNTY COASTAL AREAS-SAN BERNARDINO AND RIVERSIDE
COUNTY VALLEYS-THE INLAND EMPIRE-SAN DIEGO COUNTY VALLEYS-ORANGE
COUNTY COASTAL AREAS-ORANGE COUNTY INLAND AREAS-
INCLUDING THE CITIES OF RANCHO CUCAMONGA, GARDEN GROVE,
RIVERSIDE, SAN DIEGO, COSTA MESA, VISTA, POWAY, NATIONAL CITY,
MORENO VALLEY, ANAHEIM, ONTARIO, ORANGE, SANTEE, FULLERTON,
FONTANA, MISSION VIEJO, CHULA VISTA, SAN MARCOS, CORONA, EL
CAJON, CARLSBAD, SANTA ANA, LA MESA, SAN BERNARDINO, ENCINITAS,
OCEANSIDE, HUNTINGTON BEACH, IRVINE, AND ESCONDIDO
1142 AM PDT WED MAR 11 2026
...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THURSDAY TO 8 PM PDT
FRIDAY...
* WHAT...HIGH TEMPERATURES FROM THE LOW TO MID 80S NEAR THE COAST
AND LOW TO MID 90S FOR THE VALLEYS AND INLAND ORANGE COUNTY
EXPECTED.
* WHERE...ORANGE COUNTY COASTAL AREAS, ORANGE COUNTY INLAND AREAS,
SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE, SAN
DIEGO COUNTY COASTAL AREAS, AND SAN DIEGO COUNTY VALLEYS.
* WHEN...FROM 10 AM THURSDAY TO 8 PM PDT FRIDAY.
* IMPACTS...HOT TEMPERATURES MAY CAUSE HEAT ILLNESSES.
* ADDITIONAL DETAILS...VERY WARM TEMPERATURES ARE EXPECTED TO
CONTINUE INTO THE WEEKEND AND BEYOND. ELEVATED OVERNIGHT 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.
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.
CO
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