249
FXUS66 KSGX 221825
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
1125 AM PDT WED APR 22 2026
SYNOPSIS
COOLER WITH DECREASING WINDS TODAY. THURSDAY WILL BE A LITTLE
WARMER WITH DRY CONDITIONS. COOLER CONDITIONS LIKELY FRIDAY
THROUGH THE WEEKEND, WITH PERIODS OF INCREASED WINDS. SATURDAY
EVENING INTO SUNDAY MORNING THERE IS A CHANCE OF PRECIPITATION
OVER AND WEST OF THE MOUNTAINS. CONTINUED TROUGHING ALOFT WILL
CONTINUE SLIGHTLY BELOW AVERAGE TEMPERATURES AND WINDIER
CONDITIONS WITH CHANCES OF PRECIPITATION INTO THE MIDDLE OF NEXT
WEEK.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
CLOUDY CONDITIONS WILL PREVAIL INTO THE AFTERNOON WITH BELOW AVERAGE
TEMPERATURES. HIGHS WILL WARM A FEW DEGREES INTO THURSDAY BEFORE A
COOLING TREND FRIDAY THROUGH THE WEEKEND. THE UPPER LEVEL PATTERN IS
EXPECTED TO REMAIN TROUGHY INTO THE MIDDLE OF NEXT WEEK, WHICH
WILL KEEP TEMPERATURES NEAR TO BELOW AVERAGE, WITH PERIODS OF
CLOUDS AND INCREASED WINDS AT TIMES.
THIS WEEKEND, AN AREA OF LOW PRESSURE IS EXPECTED TO MOVE ACROSS
CENTRAL CALIFORNIA. THAT WILL BRING AN INCREASE IN WINDS AND
POTENTIAL FOR PRECIPITATION OVER AND WEST OF THE MOUNTAINS.
SOUTHWEST TO WEST WINDS WILL INCREASE OVER THE MOUNTAINS AND INTO
THE DESERTS FRIDAY THROUGH SUNDAY, WITH STRONGEST GUSTS EXPECTED ON
SATURDAY AFTERNOON AND EVENING. PEAK GUSTS OF 40 TO 50 MPH, LOCALLY
UP TO 65 MPH POSSIBLE. LIGHT PRECIPITATION IS EXPECTED WITH THE
PASSAGE OF THIS LOW, WITH THE MOST LIKELY TIME FOR ANY PRECIPITATION
TO BE SATURDAY AFTERNOON INTO SUNDAY MORNING. OVERALL, RAINFALL
TOTALS ARE EXPECTED TO BE ON THE LIGHTER SIDE. NBM CHANCES FOR
RAINFALL TO EXCEED 0.25" IS 15-30% IN THE MOUNTAINS AND LESS THAN
10% ELSEWHERE.
DRY AND WARMER CONDITIONS EXPECTED TO RETURN FOR NEXT MONDAY, WITH
HIGH TEMPERATURES FOR INLAND AREAS STILL A FEW TO AROUND 5 DEGREES
BELOW AVERAGE. ANOTHER DISTURBANCE MOVING THROUGH THE MEAN FLOW IS
EXPECTED MID-WEEK, WHICH WOULD KEEP CONDITIONS ON THE COOLER SIDE
AND INCREASE WINDS AND PRECIPITATION CHANCES.
AVIATION
221800Z...COAST/VALLEYS...ONSHORE WINDS HAVE PUSHED MOST OF THE
LOWER CLOUDS INLAND, CLEARING MOST COASTAL LOCATIONS. CLOUD BASES IN
THE VALLEYS ARE CURRENTLY AROUND 3000-6000FT MSL. LOW CLOUDS WILL
CONTINUE TO CLEAR OUT OVER THE NEXT COUPLE OF HOURS WITH MAYBE A FEW
LINGERING AROUND IN THE AFTERNOON. LOW CLOUDS WITH BASES AROUND 2000-
3500FT MSL WILL REFORM AFTER 03Z BUT, WILL BE PATCHY IN COVERAGE AND
MAINLY LOCATED IN SAN DIEGO COUNTY.
MOUNTAINS/DESERTS...WINDS WILL INCREASE AFTER 22Z TODAY WITH GUSTS
25-35 KTS, LOCALLY 40 KTS THROUGH PASSES AND ALONG DESERT SLOPES.
LOCAL UP/DOWNDRAFTS IN LEE OF MOUNTAINS AND PATCHY BLDU REDUCING VIS
IN THE DESERTS. WINDS WILL BEGIN TO EASE AFTER 12Z THURSDAY,
DROPPING OFF TO BELOW 5-10 KTS WITH GUSTS TO 15 KTS IN MOST PLACES
BY 15-18Z.
MARINE
WEST-NORTHWEST WINDS WILL GUST 20-25 KTS IN THE OUTER WATERS THIS
AFTERNOON THROUGH TONIGHT, GENERATING CHOPPY AND HAZARDOUS
CONDITIONS. MORE DETAILS CAN BE FOUND IN THE SMALL CRAFT ADVISORY.
NO ADDITIONAL HAZARDOUS MARINE CONDITIONS ARE EXPECTED THURSDAY
THROUGH SUNDAY.
SKYWARN
SKYWARN ACTIVATION IS NOT REQUESTED. HOWEVER WEATHER SPOTTERS ARE
ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS.
SGX WATCHES/WARNINGS/ADVISORIES
CA...NONE.
PZ...SMALL CRAFT ADVISORY FROM 3 PM THIS AFTERNOON TO 3 AM PDT
THURSDAY FOR WATERS FROM SAN MATEO POINT TO THE MEXICAN
BORDER EXTENDING 10 TO 60 NM OUT INCLUDING SAN CLEMENTE
ISLAND.
PUBLIC...CO
AVIATION/MARINE...VILLAFANE
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