053
FXUS66 KSGX 240957
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
257 AM PDT THU APR 24 2025
SYNOPSIS
A COOLING TREND WILL CONTINUE INTO THE WEEKEND WITH WEEKEND HIGH
TEMPERATURES AS MUCH AS 15 TO 20 DEGREES BELOW AVERAGE FOR THE
MOUNTAINS AND INLAND VALLEYS. THE MARINE LAYER WILL DEEPEN ONTO
THE COASTAL MOUNTAIN SLOPES WITH PATCHY DRIZZLE AND A SLIGHT
CHANCE OF LIGHT SHOWERS FOR EARLY FRIDAY AND A CHANCE OF SHOWERS
FOR LATE FRIDAY NIGHT THROUGH LATE SATURDAY NIGHT. THE MOST LIKELY
TIME FOR SHOWERS IS FOR SATURDAY AFTERNOON ALONG WITH A SLIGHT
CHANCE OF THUNDERSTORMS FOR ORANGE AND PORTIONS OF SOUTHWESTERN
SAN BERNARDINO COUNTIES. THERE WILL BE PERIODS OF STRONGER AND
GUSTY SOUTHWEST TO WEST WINDS FOR THE MOUNTAINS AND DESERTS FOR
FRIDAY AFTERNOON INTO SATURDAY EVENING WITH GUSTS TO 45 TO 55 MPH
ALONG AND BELOW THE DESERT SLOPES OF THE MOUNTAINS. THEN DRYING
ON SUNDAY WITH DRY WEATHER WITH A WARMING TREND FOR NEXT WEEK WITH
ABOVE AVERAGE HIGH TEMPERATURES FOR INLAND AREAS BEGINNING
TUESDAY.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
SHORT TERM (TODAY THROUGH SATURDAY NIGHT)
THE MARINE LAYER REMAINS AROUND 3500 FEET DEEP EARLY THIS MORNING
WITH WIDESPREAD COASTAL LOW CLOUDS EXTENDING WELL INLAND AND ONTO
THE LOWER COASTAL SLOPES OF THE MOUNTAINS. GREATER DEEPENING IS
EXPECTED FOR FRIDAY AND SATURDAY WITH PATCHY DRIZZLE AND A SLIGHT
CHANCE OF LIGHT SHOWERS FOR EARLY FRIDAY AND A CHANCE OF SHOWERS
FOR LATE FRIDAY NIGHT THROUGH LATE SATURDAY NIGHT. THE MOST LIKELY
TIME FOR SHOWERS IS FOR SATURDAY AFTERNOON ALONG WITH A SLIGHT
CHANCE OF THUNDERSTORMS FOR ORANGE AND PORTIONS OF SOUTHWESTERN
SAN BERNARDINO COUNTIES. RAINFALL AND LIQUID-EQUIVALENT ABOVE THE
SNOW LEVEL IS EXPECTED TO BE LIGHT, MOSTLY ONE-TENTH INCH OR LESS
FOR COASTAL AREAS AND ONE-QUARTER INCH OR LESS FOR THE MOUNTAINS.
THERE WILL BE PERIODS OF STRONGER AND GUSTY SOUTHWEST TO WEST
WINDS FOR THE MOUNTAINS AND DESERTS FOR FRIDAY AFTERNOON THROUGH
SATURDAY EVENING WITH GUSTS TO 45 TO 55 MPH ALONG AND BELOW THE
DESERT SLOPES OF THE MOUNTAINS AND WITH GUSTS TO 55 TO 65 MPH FOR
THE NORTHERN COACHELLA VALLEY BELOW THE SAN GORGONIO PASS.
NOT MUCH CHANGE IS EXPECTED WITH HIGH TEMPERATURES FOR TODAY WITH
ADDITIONAL COOLING FOR FRIDAY AND SATURDAY WITH SATURDAY HIGH
TEMPERATURES ONLY IN THE 70S FOR THE LOWER DESERTS AND ONLY IN THE
LOWER TO MID 50S FOR THE FAR INLAND VALLEYS.
LONG TERM (SUNDAY THROUGH WEDNESDAY)
A DEEP MARINE LAYER WILL CONTINUE INTO SUNDAY MORNING WITH A FEW
LIGHT SHOWERS POSSIBLY LINGERING INTO EARLY SUNDAY. NOT MUCH
WARMING IS EXPECTED ON SUNDAY WITH SUNDAY HIGH TEMPERATURES STILL
AS MUCH AS 15 TO 20 DEGREES BELOW AVERAGE FOR THE MOUNTAINS AND
INLAND VALLEYS WITH HIGH TEMPERATURES FOR THE COAST AND VALLEYS
MOSTLY IN THE LOWER TO MID 60S AND FOR THE LOWER DESERTS IN THE
70S.
THEN DRY WITH SLOW WARMING FOR MONDAY AND GREATER WARMING FOR
TUESDAY AND WEDNESDAY WITH ABOVE AVERAGE HIGH TEMPERATURES FOR
INLAND AREAS BEGINNING TUESDAY WITH TUESDAY HIGH TEMPERATURES
RANGING FROM THE MID TO UPPER 60S NEAR THE COAST TO AROUND 80 FOR
THE INLAND EMPIRE WITH THE LOWER DESERTS IN THE LOWER TO MID 90S.
AVIATION
240945Z....COASTS/VALLEYS/COASTAL MOUNTAIN SLOPES...CLOUDS BASED AT
2500-3500FT MSL ARE IN PLACE FROM THE COASTS THROUGH THE COASTAL
MOUNTAIN SLOPES THIS MORNING. THESE CLOUDS BEGIN TO CLEAR OUT FROM
EAST TO WEST STARTING 16Z THIS MORNING, CLEARING TO THE COASTS BY 18-
19Z, THOUGH LOCALLY BKN CIGS POSSIBLE ALONG THE COASTS INTO THE
AFTERNOON, PARTICULARLY IN ORANGE COUNTY. CLOUDS FILL BACK IN AND
SPREAD INLAND AGAIN AFTER 02Z FRIDAY WITH SIMILAR BASES. PATCHY DZ
POSSIBLE ALONG THE COASTS AFTER 09Z FRIDAY.
OTHERWISE...MOSTLY CLEAR THROUGH LATE THURSDAY.
MARINE
NO HAZARDOUS MARINE CONDITIONS ARE EXPECTED THROUGH MONDAY.
BEACHES
ELEVATED SURF OF 4 TO 6 FEET WITH SETS TO 7 FEET POSSIBLE FROM
SATURDAY THROUGH MONDAY WITH STRONG RIP CURRENTS EXPECTED.
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...17
AVIATION/MARINE/BEACHES...MUNYAN
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