084
FXUS66 KSGX 210958
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
158 AM PST SAT FEB 21 2026
SYNOPSIS
AFTER A COLD MORNING SATURDAY, TEMPERATURES TREND UPWARDS EACH DAY
OVER THE WEEKEND THROUGH MONDAY. FAIR, DRY, AND WARM WEATHER
LIKELY PERSISTS THROUGH NEXT WEEK.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
TODAY THROUGH TOMORROW NIGHT...
HIGH PRESSURE CONTINUES TO BUILD IN ACROSS THE REGION, WHICH IS
ALLOWING FOR CONTINUED CLEARING AND WEAK OFFSHORE WINDS TO BECOME
PERSISTENT THROUGHOUT THE NIGHT. THIS WILL KEEP ANY LOW CLOUDS FROM
FORMING AT LEAST THROUGH TOMORROW NIGHT, WITH ONLY A LESS THAN 20
PERCENT CHANCE OF LOW CLOUDS PENETRATING THE COASTAL AREAS THROUGH
THEN. IT WILL ALSO BECOME QUITE COLD FOR A LOT OF INNER VALLEYS,
WITH SOME TEMPERATURES DROPPING DOWN NEAR THE FREEZING MARK WITHIN
THE IE. DUE TO THIS, THERE COULD BE SOME AREAS OF PATCHY FROST,
ESPECIALLY WITHIN THE WIN-PROTECTED AREAS. THERE COULD ALSO BE SOME
PATCHY FOG/FREEZING FOG DEVELOPING, AS THERE ALREADY IS BEING
REPORTED AT THE RAMONA AIRPORT (KRNM). THERE COULD ALSO BE SOME
AREAS OF FOG DEVELOPING ALONG THE I-15 CORRIDOR. TOMORROW WILL BE
NOTABLY WARMER, BUT STILL ON THE COOLER SIDE. THERE WILL BE A
SLIGHTLY BETTER CHANCE FOR LOW CLOUDS TO RETURN TO THE COASTAL AREAS
TOMORROW NIGHT, ALTHOUGH CONFIDENCE IS STILL LOW.
MONDAY THROUGH FRIDAY...
THE RIDGE IS GOING TO CONTINUE TO STRENGTHEN OVER THE INNER WESTERN
STATES AND PREVENT ANY SYSTEMS FROM MOVING OVER THE REGION AS THESE
SYSTEMS ARE DEFLECTED TO THE NORTH OF THE REGION. TEMPERATURES WILL
CONTINUE TO GRADUALLY THROUGH THE MID PART OF THE WEEK, WITH ONLY
SLIGHT COOLING AS A TROUGH PASSES TO THE NORTH ON TUESDAY. BY
THURSDAY THROUGH FRIDAY, ENSEMBLES HAVE CONTINUED TO TREND DRIER IN
RECENT DAYS, AND THE AXIS OF THE RIDGE HAS CONTINUED TO STRENGTHEN.
BOTH THURSDAY AND FRIDAY WILL BE QUITE WARM, AND THERE COULD EVEN BE
COME LOCATIONS FLIRTING WITH THE DAILY RECORD FOR EITHER DAY.
LOOKING A LITTLE BEYOND THE FORECAST, IT DOES APPEAR THAT THE RIDGE
SHOULD BEGIN TO BREAK DOWN BY THE FOLLOWING WEEKEND, AND SHOULD
ALLOW SOME RELIEF WITH TEMPERATURES RETURNING TO VALUES CLOSER TO
THE SEASONAL AVERAGE FOR THIS TIME OF YEAR.
AVIATION
210930Z...MOSTLY VFR CONDITIONS WILL PREVAIL THROUGH THE TAF PERIOD.
PATCHY RADIATION FG/FZFG AND BR IN WIND-SHELTERED VALLEYS (I.E.
KRNM, KL18) TO REDUCE VIS BELOW 1SM AT TIMES THROUGH 16Z. MODEST
EAST WINDS GUSTING UP TO 35 KTS OVER THE WEST-FACING COASTAL SLOPES
AND WEST OF THE BANNING PASS 14-22Z THIS MORNING AND AFTERNOON. SCT-
BKN HIGH CLOUDS AROUND 25KFT AFTER 00Z SUN.
MARINE
NO MARINE HAZARDS ARE EXPECTED THROUGH THURSDAY MORNING.
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...WESTERINK
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