261
FXUS66 KSGX 030505
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
905 PM PST SUN NOV 2 2025
SYNOPSIS
A TROUGH OF LOW PRESSURE WILL DEEPEN OFFSHORE THROUGH THE MIDDLE OF
THE WEEK, BRINGING COOLER WEATHER, BREEZIER CONDITIONS, AND GREATER
COVERAGE OF LOW CLOUDS WEST OF THE MOUNTAINS. HIGH PRESSURE WILL
REEMERGE AT THE END OF THE WEEK, BRINGING IN WARMER CONDITIONS AND
CLOUD COVERAGE CLOSER TO THE COAST.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
SATELLITE IMAGERY AT 9 PM WAS SHOWING WIDESPREAD HIGH CLOUD COVERAGE
MOVING WEST TO EAST ACROSS THE REGION. OBSERVATIONS FROM AREA
AIRPORTS ARE INDICATING PATCHES OF LOW CLOUDS HAD DEVELOPED ALONG
PORTIONS OF THE COAST. LOW CLOUDS AND AREAS OF FOG ARE EXPECTED
TO BECOME MORE WIDESPREAD OVERNIGHT, POTENTIALLY REACHING INTO THE
WESTERN PORTIONS OF THE INLAND EMPIRE.
FROM PREVIOUS DISCUSSION ISSUED AT 2 PM NOVEMBER 2...
A PACIFIC STORM OVER THE ALEUTIAN ISLAND CHAIN OF ALASKA WILL MOVE
CLOSER TO THE WEST COAST OVER THE NEXT COUPLE DAYS. THIS WILL LEAD
TO PRESSURE HEIGHT FALLS, AIDING IN MINOR COOLING AND GREATER
ONSHORE FLOW ACROSS SOUTHERN CALIFORNIA IN THE COMING DAYS. HIGH
TEMPERATURES WILL BE SIMILAR MOST PLACES BY MONDAY AND TUESDAY, WITH
THE INLAND VALLEYS SEEING THE GREATEST COOLING AROUND 5 DEGREES WITH
WIDESPREAD HIGHS IN THE LOWER 80S. THE MARINE LAYER WILL SLOWLY
DEEPEN OVER THE NEXT COUPLE OF DAYS AS WELL, WITH A GREATER CHANCE
OF FOG FOR AREAS OF THE INLAND EMPIRE.
THE PACIFIC STORM AND ASSOCIATED AREA OF LOW PRESSURE WILL MOVE INTO
NORTHERN CALIFORNIA AND OREGON BY WEDNESDAY AND THURSDAY.
THIS WILL BRING THE GREATEST COOLING AND WEST WINDS OVER THE REGION.
HIGHS IN THE 60S/70S WILL BE COMMON FOR MOST AREAS WITH THE
COACHELLA VALLEY IN THE 80S. WE STILL CONTINUE TO MONITOR WINDS
DURING THIS TIME, BUT CONFIDENCE IS INCREASING ON WIND SPEEDS
BECOMING ELEVATED ACROSS THE MOUNTAINS AND DESERTS WITH GUSTS 20-40
MPH OUT OF THE WEST. MODEL AGREEMENT IS FAIRLY UNIFORM IN BRINGING
IN AN EXPANDING AREA OF HIGH PRESSURE BY FRIDAY INTO NEXT WEEKEND
ACROSS THE REGION, WHICH WILL CONTRIBUTE TO WARMER WEATHER AND
WEAKER WINDS WITH OFFSHORE FLOW.
AVIATION
030330Z...COASTS/VALLEYS...WHILE SCT-BKN HIGH CIRRUS CLOUDS ARE
PARTIALLY OBSCURING SATELLITE DETECTION OF LOW CLOUDS, THEY ARE
STARTING TO REFORM ACROSS THE CALIFORNIA BIGHT AND ALONG PORTIONS OF
THE COAST. BASES ARE ABOUT 700-900FT MSL WITH CIGS CURRENTLY
STRETCHING FROM A FEW MILES SOUTH OF KSNA SOUTHWARD THROUGH KCRQ.
EXPECTING CIGS TO CONTINUE TO FILL IN ALONG THE COAST AND INLAND
ABOUT 15-20 MILES OVER THE NEXT SEVERAL HOURS. BY 06-09Z, BASES WILL
SETTLE TO 500-800FT MSL, BRINING VIS DOWN TO 1SM OR LESS AT TIMES
FOR COASTAL HIGHER TERRAIN AND INLAND VALLEYS WHILE THE IMMEDIATE
COASTS WILL SEE VIS RESTRICTIONS TO 4-6 MILES. THERE IS A 50-60%
CHANCE FOR CIGS AND VERY LOW VIS AT KONT BETWEEN 12-16Z MONDAY.
CLOUDS AND BR/FG SHOULD CLEAR BACK TOWARDS THE COAST AROUND 18Z
MONDAY. LOW CLOUDS LOOK TO REDEVELOP AND PUSH BACK ASHORE AFTER 03Z
TUESDAY, WITH BASES INITIALLY AROUND 900-1200FT MSL.
MOUNTAINS/DESERTS...VFR CONDITIONS PREVAIL THROUGH THE PERIOD. FEW-
SCT HIGH CLOUDS AOA 20,000FT MSL THROUGH MONDAY EVENING.
MARINE
NO HAZARDOUS MARINE CONCERNS THROUGH THURSDAY.
BEACHES
LONG PERIOD (19-21 SEC) SWELL FROM THE SOUTHWEST (200 DEGREES)
PREVAILING THROUGH TODAY, BRINGING ELEVATED SURF OF 3 TO 5
FEET WITH LOCALLY HIGHER SETS ON SOUTHWEST FACING BEACHES. SURF WILL
GRADUALLY FALL TONIGHT INTO MONDAY. SURF BECOMES ELEVATED AGAIN LATE
WEEK.
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/APR
AVIATION/MARINE/BEACHES...MUNYAN
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page