854
FXUS66 KSGX 122153
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
153 PM PST MON JAN 12 2026
SYNOPSIS
GUSTY SANTA ANA WINDS WILL BECOME MORE CONFINED TO THE PASSES AND
COASTAL SLOPE REGIONS AS WE CONTINUE INTO THE UPCOMING WEEK.
TEMPERATURES WILL WARM INTO WEDNESDAY. HIGH TEMPERATURES OF 5 TO
15 DEGREES ABOVE AVERAGE ARE EXPECTED FROM WEDNESDAY INTO THIS
WEEKEND WITH CONTINUED DRY AND MOSTLY SUNNY WEATHER.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
..UPDATED AVIATION AND MARINE DISCUSSIONS
NORTH AND EAST WINDS ARE CURRENTLY GUSTING NEAR 30-40 MPH ACROSS
THE FOOTHILLS AND VALLEYS WITH LOCAL GUSTS OVER 50 MPH. WINDS ARE
EXPECTED TO EASE SOME BY LATER THIS AFTERNOON AND EVENING. THIS
WILL ALLOW WIND ADVISORIES ACROSS THE REGION TO EXPIRE BY THE
EARLY AFTERNOON. WINDS WILL INCREASE SLIGHTLY AGAIN BY TUESDAY
MORNING, THOUGH NOT AS STRONG AS TODAY AND MORE LOCALIZED TO THE
MOUNTAINS AS THE PRESSURE GRADIENT BEGINS TO RELAX. THE OFFSHORE
WIND PATTERN WILL STICK AROUND MUCH OF THIS WEEK AS HIGH PRESSURE
REMAINS LOCKED IN ACROSS THE WEST COAST. THIS WILL CONTINUE TO
BRING GUSTY WINDS TO THE COASTAL SLOPES OF THE MOUNTAINS INTO SOME
WESTERN VALLEYS EACH DAY. WINDS WILL GENERALLY BE 35-50 MPH IN
THE WINDY SPOTS, CLOSER TO 25-35 MPH ELSEWHERE.
HIGH PRESSURE OVER CALIFORNIA WILL CONTINUE TO AMPLIFY BY TUESDAY
INTO WEDNESDAY AS 850MB TEMPERATURES NEAR 15C. NEAR AVERAGE
TEMPERATURES ACROSS THE MOUNTAINS AND DESERTS WILL BEGIN TO RISE
ABOVE AVERAGE BY WEDNESDAY. NBM CHANCES FOR REACHING 80 DEGREES
RISE DRAMATICALLY BY THIS DAY, WITH CHANCES NEAR 70-90% FOR MANY
AREAS OF THE INLAND EMPIRE, COACHELLA VALLEY, AND INLAND SAN
DIEGO CO VALLEYS (CLOSER TO 30-50% ACROSS INLAND ORANGE COUNTY AND
THE ANZA BORREGO DESERT). THE AREA OF HIGH PRESSURE WILL NOT MOVE
VERY MUCH THROUGH THE REST OF THE WEEK, LEADING TO MINOR DAY TO
DAY CHANGES IN THE WEATHER. HIGHS IN THE 70S/80S WILL CONTINUE
FOR AREAS WEST OF THE MOUNTAINS AND LOWER DESERTS. BEACH DAYS WILL
BE GLORIOUS WITH HIGHS IN THE LOW TO MID 70S. EARLY MORNING LOW
TEMPERATURES WILL ALSO NOT BE AS CHILLY BY THE MIDDLE AND THE END
OF THIS WEEK AS WELL.
PRESSURE HEIGHTS FALL SOME BY THE WEEKEND, WHICH WILL HELP EASE
OFFSHORE WINDS ACROSS THE MOUNTAINS AND FOOTHILLS EVEN FURTHER.
THIS MAY AID IN A SLIGHT COOL DOWN IN TEMPERATURES BUT CONFIDENCE
ON THIS OCCURRING REMAINS LOW. MODELS BEGIN TO HINT AT A POSSIBLE
TURN TO ONSHORE FLOW BY EARLY NEXT WEEK AS WELL, WHICH COULD NUDGE
OUR TEMPERATURES CLOSER TO AVERAGE WITH WEAKER WINDS.
AVIATION
122115Z...MOSTLY CLEAR SKIES AND VFR CONDITIONS TODAY AND TONIGHT.
EAST TO NORTHEAST WINDS 20-30 KTS ON THE COASTAL SLOPES/FOOTHILLS,
LOCAL GUSTS 15-25 KT INTO THE VALLEYS, WITH ISOLATED GUSTS TO 40 KTS
IN WIND-PRONE PASSES. PERIODS OF LLWS WITH MOD UP/DOWNDRAFTS LEE OF
MOUNTAINS.
MARINE
NO HAZARDOUS MARINE CONDITIONS ARE EXPECTED THROUGH SATURDAY.
SGX WATCHES/WARNINGS/ADVISORIES
CA...NONE.
PZ...NONE.
PUBLIC...APR
AVIATION/MARINE...CSP
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