500
FXUS66 KSGX 260428
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
928 PM PDT SAT APR 25 2026
SYNOPSIS
COOL AND WINDY THIS WEEKEND WITH CHANCES OF LIGHT PRECIPITATION,
MAINLY OVER AND WEST OF THE MOUNTAINS. WARMER EARLY NEXT WEEK,
THEN MINOR COOLING AND A SLIGHT CHANCE OF PRECIPITATION TOWARDS
THE MIDDLE OF THE WEEK. WARMER AND DRIER FOR THE END OF THE WEEK.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
EVENING UPDATE...
SCATTERED SHOWERS CONTINUE TO MOVE ACROSS THE AREA THIS EVENING AS
AN UPPER LEVEL SHORT WAVE BEGINS TO MOVE INLAND OVER SO CAL.
RAINFALL RATES WILL GENERALLY BE 0.10" PER HOUR OR LESS TONIGHT,
LOCALLY UP TO 0.25" PER HOUR IN HEAVIER SHOWERS. SO FAR TOTALS
HAVE BEEEN LESS THAN 0.10" FOR THE COASTAL AREAS TO THE MOUNTAINS,
EXCEPT ON THE COASTAL SLOPES OF THE SAN BERNARDINO MOUNTAINS WHERE
AROUND 0.25-0.50" HAVE BEEN REPORTED. OTHERWISE GUSTY SOUTHWEST TO
WEST WINDS CONTINUE TONIGHT IN THE MOUNTAINS AND DESERTS WITH
GUSTS OF 45-55 MPH. A WIND ADVISORY REMAINS IN EFFECT FOR THE
DESERTS THROUGH 11 AM SUNDAY.
A BRIEF LULL IN THE PRECIPITATION OCCURS SUNDAY AFTERNOON BEFORE
A SECOND SHORT WAVES MOVES IN SUNDAY NIGHT, BRINGING ANOTHER
ROUND OF ISOLATED TO SCATTERED SHOWERS INTO MONDAY MORNING. THE
GREATEST COVERAGE WILL BE ACROSS SAN DIEGO COUNTY WITH THIS WAVE.
SNOW LEVELS NEAR 6500-7000 FT THIS EVENING WILL FALL TO 5500-6000
FT BY SUNDAY MORNING. 1-3" OF SNOW ACCUMULATION IS POSSIBLE ABOVE
6500 FT. SUNDAY WILL REMAIN COOL WIH HIGH TEMPERATURES ANYWHERE
FROM 10 TO 20 DEGREES BELOW NORMAL INLAND.
PREVIOUS DISCUSSION...
COOL AND BREEZY CONDITIONS WILL CONTINUE FOR MONDAY AND TUESDAY
WITH LITTLE IF ANY CHANCE FOR PRECIPITATION AFTER MONDAY MORNING.
TEMPERATURES ON MONDAY WILL REMAIN WELL BELOW AVERAGE BUT TUESDAY
WILL BE WARMER, WITH TEMPERATURES NEAR AVERAGE.
ANOTHER LOW PRESSURE SYSTEM COULD BRING CHANCES FOR PRECIP AGAIN
FOR LATE WED INTO THU AS ANOTHER LOW PRESSURE SYSTEM MOVES IN FROM
THE WEST. THE TIMING AND TRAJECTORY OF THIS SYSTEM IS STILL
UNCERTAIN DUE TO SPREAD AMONG MODEL SOLUTIONS BUT MOST LIKELY, WE
WILL SEE MORE COOL AND CLOUDY WEATHER.
DRY AND WARMER WEATHER RETURNS FOR THE END OF NEXT WEEK AS THE LOW
MOVES INLAND AND WEAK HIGH PRESSURE RIDGING DEVELOPS OVER THE WEST
COAST.
AVIATION
260000Z...MULTIPLE CLOUD DECKS, SCT-BKN 2500-5000FT FOR COASTAL AND
INLAND AREAS AND SCT-OVC 20,000-25,000FT MSL ACROSS THE ENTIRE
REGION. VCSH IS BEGINNING TO SPREAD INTO THE COASTAL AREAS THIS
EVENING WITH MORE WIDESPREAD -SHRA EXPECTED TO FILL OVER THE NEXT
FEW HOURS. LIGHT RAIN IS ALSO NOW REACHING THE MOUNTAINS WITH
INTERMITTENT SHSN ABOVE 6500-7000 FT MSL. MTNS SHROUDED IN FG; VIS 0-
5SM IN FG/SHSN. PERIODIC WIND GUSTS ABOVE 20KTS TO CONTINUE AT MOST
SITES THIS EVENING, STRONGER WINDS POSSIBLE OVERNIGHT AND INTO
SUNDAY MORNING, ESPECIALLY FOR DESERT SITES AND THOSE NEAR MTN
RANGES WHERE SURFACE GUSTS MAY REACH 30-35KTS. THROUGH MTN PASSES,
UP TO 50KTS. MOD TO STRONG UP/DOWNDRAFTS NEAR PEAKS AND ON DESERT
SLOPES TODAY AND SUNDAY. PERIODIC REDUCED VIS DUE TO BLDU. -SHRA
WILL COME TO AN END NORTH TO SOUTH ON SUNDAY, AROUND 09-12Z SUN FOR
ORANGE, RIVERSIDE, SAN BERNARDINO COUNTIES AND 16-19Z SUN FOR SAN
DIEGO COUNTY.
MARINE
GUSTY WEST WINDS CLOSE TO 18-20 KTS EXPECTED INTERMITTENTLY THROUGH
LATE SUNDAY MORNING WHICH MAY BE HAZARDOUS TO SMALL CRAFT.
OTHERWISE, NO HAZARDOUS MARINE CONDITIONS ARE EXPECTED THROUGH
WEDNESDAY.
SKYWARN
SKYWARN ACTIVATION IS NOT REQUESTED. HOWEVER WEATHER SPOTTERS ARE
ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS.
SGX WATCHES/WARNINGS/ADVISORIES
CA...WIND ADVISORY UNTIL 11 AM PDT SUNDAY FOR APPLE AND LUCERNE
VALLEYS-COACHELLA VALLEY-SAN DIEGO COUNTY DESERTS-SAN
GORGONIO PASS NEAR BANNING.
PZ...NONE.
PUBLIC...SS/PG
AVIATION/MARINE...MUNYAN
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