532
FXUS66 KSGX 081027
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
227 AM PST MON DEC 8 2025
SYNOPSIS
VERY PATCHY FOG NEAR THE COAST THIS MORNING. WARM AND DRY WITH
PERIODS OF WEAK SANTA ANA WINDS THIS WEEK. THE PEAK OF THE HEAT IS
EXPECTED TO BE TUESDAY FOR COASTAL AREAS AND WEDNESDAY FOR INLAND
AREAS.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
OCCASIONAL LIGHT FOG AND ISOLATED DENSE FOG HAS BEEN REPORTED NEAR
THE COAST THIS MORNING. OFFSHORE SURFACE PRESSURE GRADIENTS ARE
STRENGTHENING, PUSHING DRIER AIR TOWARDS THE COAST AND LIMITING
AREAL COVERAGE OF ANY FOG. EXPECT THIS TREND TO CONTINUE THROUGH
THE MORNING WITH THE ALREADY SPARSE FOG TO EVENTUALLY DISSIPATE.
BREEZY NORTHEAST TO EAST WINDS WILL DEVELOP BELOW THE PASSES AND
CANYONS LATER THIS MORNING AND CONTINUE INTO TONIGHT WITH PEAK
GUSTS AROUND 35 MPH IN THE WIND-PRONE LOCATIONS. OTHERWISE WARMER
AND DRY TODAY WITH HIGH TEMPERATURES AROUND 10-15 DEGREES ABOVE
SEASONAL AVERAGES.
THE UPPER LEVEL HIGH OVER THE EAST PAC AMPLIFIES AND EXPANDS
EASTWARD ON TUESDAY. WEAK SANTA ANA WINDS WILL CONTINUE, PUSHING
HIGH TEMPERATURES UP TO 15-20 DEGREES ABOVE NORMAL WEST OF THE
MOUNTAINS, AND AROUND 10-15 DEGREES ABOVE NORMAL IN THE MOUNTAINS
AND DESERTS. INLAND COASTAL AREAS AND WESTERN VALLEYS WILL LIKELY
SEE HIGHS NEAR THE MID 80S. THE UPPER HIGH CONTINUES TO SHIFT
EAST ON WEDNESDAY WITH EVEN WEAKER OFFSHORE FLOW, WHICH WILL
GENERALLY BE CONFINED TO THE FOOTHILLS. THE RETURN OF A WEAK SEA
BREEZE IN THE AFTERNOON WILL BRING A LITTLE COOLING TO THE COASTAL
AREAS, WHILE INLAND AREAS CONTINUE TO WARM. BOTH THE UPPER RIDGE
AND OFFSHORE FLOW CONTINUE TO WEAKEN ON THURSDAY WITH A BIT MORE
OF A SEA BREEZE IN THE AFTERNOON, SPREADING COOLING FURTHER INLAND
WEST OF THE MOUNTAINS WITH LITTLE CHANGE IN HIGH TEMPERATURES
ELSEWHERE.
THERE IS A MINOR BUMP UP IN OFFSHORE GRADIENTS AND SANTA ANA WINDS
ON FRIDAY MORNING, THOUGH THIS HAS TRENDED WEAKER SINCE YESTERDAY.
IT REMAINS QUITE WARM AND DRY ON FRIDAY WITH HIGHS STILL AROUND
10-15 DEGREES ABOVE NORMAL FOR INLAND AREAS AND 5-10 DEGREES ABOVE
NORMAL NEAR THE COAST. THE UPPER RIDGE FINALLY BREAKS DOWN OVER
THE WEEKEND FOR GRADUAL COOLING SATURDAY THROUGH MONDAY, THOUGH
HIGH TEMPERATURES REMAIN SEVERAL DEGREES ABOVE NORMAL. ONSHORE
FLOW AND POTENTIALLY COASTAL LOW CLOUDS AND FOG RETURN OVER THE
WEEKEND.
AVIATION
081030Z...CLEAR AND VFR CONDITIONS WILL PREVAIL TODAY AND TONIGHT.
EXCEPT ISOLD FOG NEAR KSAN COULD BRIEFLY AND INTERMITTENTLY REDUCE
VIS 1-5SM THROUGH 15Z. POCKETS OF NORTHEAST WINDS GUSTING 25-35 KTS
MAINLY IN FOOTHILLS AND ADJACENT VALLEYS AFTER 20Z.
MARINE
THIS MORNING, ISOLATED PATCHES OF DENSE FOG WITH VISIBILITY AROUND 1
NAUTICAL MILE. OTHERWISE, NO HAZARDOUS MARINE CONDITIONS ARE
ANTICIPATED THROUGH FRIDAY.
SKYWARN
SKYWARN ACTIVATION IS NOT REQUESTED. HOWEVER WEATHER SPOTTERS ARE
ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS.
SGX WATCHES/WARNINGS/ADVISORIES
CA...NONE.
PZ...NONE.
PUBLIC...SS
AVIATION/MARINE...MM
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