641
FXUS66 KSGX 181657
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
857 AM PST TUE FEB 18 2025
SYNOPSIS
A FEW DEGREES OF COOLING FOR INLAND AREAS TODAY WITH WIDESPREAD
WARMING WEDNESDAY. FOR THURSDAY AND FRIDAY, WEAK OFFSHORE FLOW WILL
BRING WARMER CONDITIONS TO THE COAST AND VALLEYS, WITH A FEW DEGREES
OF COOLING IN THE MOUNTAINS AND DESERTS. GUSTY NORTH WINDS WILL
OCCUR ALONG AND BELOW THE COASTAL SLOPES OF THE MOUNTAINS WITH THE
STRONGER GUSTS MOSTLY 35 MPH OR LESS. PATCHY LOW CLOUD AND FOG
COVERAGE IS EXPECTED FOR THE NEXT FEW NIGHTS NEAR THE COAST.
WIDESPREAD ABOVE AVERAGE TEMPERATURES ARE EXPECTED FOR SATURDAY
THROUGH TUESDAY.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
LOW CLOUDS MADE IT INTO THE VALLEYS OVERNIGHT. AT 9 AM, LOW CLOUDS
WERE SLOWLY CLEARING FROM THE VALLEYS TO THE COAST. LOW CLOUD
COVERAGE IS EXPECTED TO BECOME PATCHIER AND MORE CONFINED TO COASTAL
AREAS OVER THE NEXT FEW NIGHTS. A WEAK COASTAL EDDY THROUGH THURSDAY
WILL KEEP SOME LOW CLOUDS AND FOG PRESENT. BY FRIDAY, WEAK OFFSHORE
FLOW WILL PREVAIL, WHICH WILL KEEP LOW CLOUDS AND FOG ABSENT FROM
THE COAST THROUGH THE WEEKEND.
IT WILL BE COOLER INLAND TODAY AND A LITTLE WARMER ON WEDNESDAY.
COASTAL AREAS WILL WARM A FEW DEGREES EACH DAY THURSDAY AND FRIDAY
WITH A FEW DEGREES OF COOLING IN THE MOUNTAINS AND DESERTS. FOR
THURSDAY AND FRIDAY THERE WILL BE WEAK OFFSHORE FLOW WITH GUSTY
NORTH WINDS ALONG AND BELOW THE COASTAL SLOPES OF THE MOUNTAINS WITH
PEAK GUSTS UP TO 35 MPH.
HIGH PRESSURE ALOFT ACROSS CALIFORNIA WILL BRING A WARMING TREND
THROUGH SUNDAY AND MONDAY WITH MONDAY HIGH TEMPERATURES AROUND 5
DEGREES ABOVE AVERAGE NEAR THE COAST TO 15 TO 20 DEGREES ABOVE
AVERAGE FOR THE MOUNTAINS. HIGH TEMPERATURES ON MONDAY WILL BE
AROUND 70 NEAR THE COAST TO THE MID 70S TO LOWER 80S FOR THE VALLEYS
AND IN THE MID TO UPPER 80S FOR THE LOWER DESERTS.
AVIATION
181700Z...COAST/VALLEYS...SCT-BKN LOW CLOUDS BASED AT 2500-3000 FT
MSL ARE CLEARING FROM INLAND AREAS TO THE COAST BY 18Z. LOW CLOUDS
REDEVELOP LATE THIS EVENING, MOVING INTO COASTAL REGIONS 09-12Z WED.
LOWER BASES, AROUND 600-1000 FT MSL, AND PATCHIER CIG COVERAGE THAN
THIS MORNING. LOCALIZED VIS REDUCTIONS POSSIBLE WHERE TERRAIN
INTERSECTS CLOUDS DOWN TO 3-6SM. SCATTER OUT TO THE COAST 17-18Z
WEDNESDAY.
MOUNTAINS/DESERTS...SCT-BKN HIGH CLOUDS ABOVE 25,000 FT MSL AND VFR
CONDITIONS THROUGH WEDNESDAY.
MARINE
NO HAZARDOUS MARINE CONDITIONS ARE ANTICIPATED THROUGH SATURDAY.
BEACHES
A LONG-PERIOD WEST SWELL ARRIVES TODAY, GENERATING ELEVATED SURF
- ESPECIALLY FOR WEST FACING BEACHES - WITH SETS TO 6-7 FEET, A
HIGH RIP CURRENT RISK, AND SOME DANGEROUS SWIMMING CONDITIONS.
SWELL AND SURF EASE SOMEWHAT WEDNESDAY.
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...CO
AVIATION/MARINE/BEACHES...WESTERINK
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