088
FXUS66 KSGX 231132
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
332 AM PST MON FEB 23 2026
SYNOPSIS
DRY AND WARMER THROUGH THE END OF THE WEEK, WITH HIGH TEMPERATURES
RISING TO AS MUCH AS 10 TO 20 DEGREES ABOVE SEASONAL AVERAGES.
HIGH CLOUDS AND WEAK OFFSHORE FLOW WILL CONTINUE THROUGH TUESDAY,
THEN WEAK ONSHORE FLOW RETURNS WITH INCREASING CHANCES FOR A
RETURN OF MARINE LAYER LOW CLOUDS LATER IN THE WEEK.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
TONIGHT THROUGH TOMORROW NIGHT...
HIGH PRESSURE CONDITIONS CONTINUE TO BUILD IN OVER THE REGION. THERE
HAS BEEN ENOUGH WEAK OFFSHORE WINDS TO PREVENT ANY MARINE LAYER
DEVELOPMENT. SOME OF THE HIGHER VALLEYS MAY EXPERIENCE PATCHY FOG
THIS MORNING, OTHERWISE WITH THE EXCEPTION OF SOME PASSING HIGH
LEVEL CLOUDS, SKIES WILL REMAIN MOSTLY CLEAR AND TEMPERATURES THIS
AFTERNOON WILL BE SLIGHTLY WARMER FROM WHERE THE HIGHS WERE
YESTERDAY. BEGINNING TOMORROW EVENING/NIGHT, WE COULD HAVE SOME OF
THE MARINE LAYER BEGINNING TO DEVELOP JUST OVER THE COASTAL
WATERS, AND THEN POSSIBLY MOVE IN OVER SOME OF THE COASTAL AREAS.
WEDNESDAY THROUGH SATURDAY...
FROM WEDNESDAY THROUGH FRIDAY, THERE WILL BE A WARMING TREND AS THE
RIDGE OVER THE WESTERN STATES CONTINUES TO STRENGTHEN. A MORE
PERSISTENT ONSHORE FLOW WILL ALSO ALLOW FOR A RETURN OF THE MARINE
LAYER. WINDS WILL INCREASE ON WEDNESDAY WITH A TIGHTENING OF THE
GRADIENT AS A TROUGH PASSES TO THE NORTH. WITH A 1000/500 MB
THICKNESS OF 590 DM PARKED JUST TO THE SOUTH OF SAN DIEGO BY FRIDAY,
TEMPERATURES ARE GOING TO BE WELL ABOVE THE SEASONAL TEMPERATURE FOR
THIS TIME OF YEAR, WHERE SOME AREAS WITHIN THE IE MAY APPROACH 90
DEGREES AND BE NEARLY 20 DEGREES ABOVE AVERAGE. HIGH TEMPERATURES
FOR SATURDAY WILL BE SLIGHTLY COOLER AS THE STRONG RIDGE FINALLY
BEGINS TO WEAKEN.
A LITTLE BEYOND THE FORECAST, THERE LOOKS TO BEGIN A CHANGE IN THE
LONGWAVE PATTERN SHIFTING FROM BEING PREDOMINATELY BY A RIDGE
OVER THE WESTERN STATES, TO TRANSITIONING INTO WEAK TROUGHING OVER
SOCAL. THIS WILL ALLOW FOR A BREAKDOWN AND CONTINUED GRADUAL
COOLING THROUGH THE FOLLOWING WEEKEND. THIS MAY LEAD TO GENERAL
WEAK TROUGHING REMAINING IN PLACE AFTER THAT GOING INTO THE WEEK
BEYOND THAT, AND THIS WILL BEGIN TO COOL OFF TEMPERATURES CLOSER
TO THE SEASONAL AVERAGE, AND ALSO ALLOW FOR A SLIGHT CHANCE OF
PRECIPITATION, AS ENSEMBLES SUGGEST.
AVIATION
231030Z...VFR SCT HIGH CLOUDS TODAY AND TONIGHT.
MARINE
NO MARINE HAZARDS ARE EXPECTED THROUGH FRIDAY.
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...STEWEY
AVIATION/MARINE...MM
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