856
FXUS66 KSGX 262043
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
143 PM PDT SUN APR 26 2026
SYNOPSIS
COOL AND WINDY CONTINUES TODAY INTO EARLY TOMORROW WITH CHANCES
OF LIGHT PRECIPITATION, MAINLY OVER AND WEST OF THE MOUNTAINS.
WARMER EARLY THIS 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...
MOSTLY CLOUDY THIS AFTERNOON WITH A FEW LIGHT SHOWERS PRODUCING
LITTLE ACCUMULATIONS. A MINOR DISTURBANCE EMBEDDED IN THE
NORTHWEST FLOW ALOFT COULD BRING A PERIOD OF INCREASED SHOWER
ACTIVITY TONIGHT. ONSHORE FLOW REMAINS STRONG AND THE WIND-PRONE
LOCATIONS IN THE MOUNTAINS AND ADJACENT DESERT AREAS ARE CURRENTLY
REPORTING WESTERLY WINDS GUSTING 35 TO 45 MPH.
WINDS WILL GRADUALLY WEAKEN TONIGHT INTO MONDAY AND PRECIP TAPER
OFF AS THE MAIN UPPER LEVEL TROUGH AXIS MOVES INLAND LATE ON
MONDAY. TEMPERATURES ON MONDAY WILL REMAIN AS MUCH AS 10-20
DEGREES BELOW AVERAGE FOR INLAND AREAS AND THE MOUNTAINS BUT NEAR
OR A LITTLE BELOW AVERAGE NEAR THE COAST.
FAIR WEATHER WITH A WARMING TREND WILL BEGIN ON TUESDAY AND
CONTINUE THROUGH WEDNESDAY AS A LOW PRESSURE SYSTEM MOVES SOUTH
OUT OF THE GULF OF ALASKA AND A WEAK RIDGE OF HIGH PRESSURE
DEVELOPS OVER THE DESERT SOUTHWEST. WEDNESDAY WILL LIKELY BE THE
WARMEST DAY WITH TEMPERATURES RANGING FROM A FEW DEGREES BELOW TO
A FEW DEGREES ABOVE SEASONAL AVERAGES.
NUMERICAL MODELS HAVE ADJUSTED SOLUTIONS TO SLOW DOWN THE
PROGRESS OF THE GULF OF AK LOW SO THAT IT DOESN'T MOVE INTO
SOCAL/NORTHERN BAJA UNTIL THURSDAY. THIS MEANS THAT WE'RE UNLIKELY
TO SEE ANY PRECIPITATION FROM THIS SYSTEM UNTIL LATE WEDNESDAY/EARLY
THURSDAY. MODELS ARE IN PRETTY GOOD AGREEMENT THROUGH THURSDAY WITH
RESPECT TO THE SYNOPTIC PATTERN, SHOWING THE CLOSED UPPER LOW
MOVING OVER NORTHERN BAJA LATE THURSDAY. THIS TRAJECTORY COULD
BRING US PRECIP ON THURSDAY BUT NOT MUCH IN THE WAY OF WINDS OR
COLD AIR. TEMPERATURES ON THURSDAY WILL LIKELY BE GENERALLY NEAR
OR A LITTLE BELOW SEASONAL AVERAGES.
DRY AND WARMER FOR FRIDAY AND SATURDAY UNDER A TRANSIENT RIDGE OF
HIGH PRESSURE BETWEEN THE DEPARTING SYSTEM MOVING INTO THE
SOUTHERN ROCKIES AND ANOTHER LOW PRESSURE SYSTEM MOVING IN FROM
THE NORTHWEST.
AVIATION
261745Z....COAST/VALLEYS...SCT-BKN LOW CLOUDS 2200-4500FT MSL AS
-SHRA CONTINUES TO MOVE ACROSS THE AREA, BECOMING MORE ISOLATED
THROUGH THE AFTERNOON. GUSTY SURFACE WINDS OUT OF THE WEST FOR MOST
LOCATIONS TODAY, WITH GUSTS UP TO 20-25KTS POSSIBLE THROUGH 06Z MON.
VCSH AFTER 20Z TODAY, ENDING BY 10Z MON FOR RIVERSIDE, ORANGE, AND
SAN BERNARDINO COUNTIES. VCSH/-SHRA POSSIBLE FOR SD COUNTY THROUGH
20Z MON.
MOUNTAINS/DESERTS
LIGHT PRECIPITATION FALLING IN THE
MOUNTAINS WITH INTERMITTENT SHSN ABOVE 6000-6500FT MSL. MTNS
SHROUDED IN FG; VIS 0-5SM IN FG/SHSN. GUSTY WEST WINDS WITH SURFACE
SPEEDS UP TO 20-30 KTS, LOCALLY HIGHER THROUGH MOUNTAIN PASSES AND
NEAR RIDGELINES, DYING DOWN BY 12Z MON. MOD TO STRONG UP/DOWNDRAFTS
NEAR PEAKS AND ON DESERT SLOPES. PERIODIC REDUCED VIS DUE TO BLDU.
MARINE
GUSTY WEST WINDS CLOSE TO 18-20 KTS EXPECTED INTERMITTENTLY THROUGH
THIS AFTERNOON WHICH MAY BE HAZARDOUS TO SMALL CRAFT. OTHERWISE, NO
HAZARDOUS MARINE CONDITIONS ARE EXPECTED THROUGH THURSDAY.
SKYWARN
SKYWARN ACTIVATION IS NOT REQUESTED. HOWEVER WEATHER SPOTTERS ARE
ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS.
SGX WATCHES/WARNINGS/ADVISORIES
CA...WIND ADVISORY UNTIL 5 PM PDT THIS AFTERNOON FOR APPLE AND
LUCERNE VALLEYS-COACHELLA VALLEY-SAN DIEGO COUNTY DESERTS-
SAN GORGONIO PASS NEAR BANNING.
PZ...NONE.
PUBLIC...PG
AVIATION/MARINE...ZUBER
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