148
FXUS66 KSGX 260518
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
1018 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 BEEN 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 WITH 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
260600Z...MULTIPLE CLOUD DECKS, SCT-BKN 2200-5000FT FOR COASTAL AND
INLAND AREAS AND SCT-OVC 20,000-25,000FT MSL ACROSS THE ENTIRE
REGION. POCKETS OF -SHRA CONTINUE TO MOVE THROUGH THE COASTAL BASIN
REGION THROUGH THE OVERNIGHT HOURS, BECOMING LESS NUMEROUS FROM
NORTHWEST TO SOUTHEAST 12-16Z SUNDAY. PRECIPITATION BECOMES LARGELY
VCSH AFTER 16Z, BUT REMAINS POSSIBLE THROUGH THE END OF THE PERIOD.
LIGHT RAIN IS ALSO REACHING THE MOUNTAINS WITH INTERMITTENT SHSN
ABOVE 6000-6500 FT MSL. MTNS SHROUDED IN FG; VIS 0-5SM IN FG/SHSN.
WINDS HAVE LARGELY RELAXED WEST OF THE MOUNTAINS THIS EVENING, BUT
PERIODIC WIND GUSTS ABOVE 20KTS REMAIN POSSIBLE FOR DESERT MOUNTAIN
SLOPES INTO THE DESERT THROUGH THE OVERNIGHT HOURS. GUSTS PICK BACK
UP TO 20-30 KTS INTO THE DESERTS BY 18Z SUNDAY, WITH GUSTS 15-20 KTS
RETURNING TO THE COASTAL BASIN AFTER 18Z AS WELL. MOD TO STRONG
UP/DOWNDRAFTS NEAR PEAKS AND ON DESERT SLOPES TONIGHT AND SUNDAY.
PERIODIC REDUCED VIS DUE TO BLDU.
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.
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
AVIATION/MARINE...MUNYAN
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