767
FXUS66 KSGX 211741
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
941 AM PST SAT FEB 21 2026
SYNOPSIS
AFTER A COLD START TODAY, TEMPERATURES WILL TREND UPWARDS EACH
DAY THROUGH MONDAY. FAIR, DRY, AND WARM WEATHER LIKELY PERSISTS
THROUGH NEXT WEEK. DAYTIME HIGH TEMPERATURES GO ABOVE SEASONAL
AVERAGES TOMORROW AND INCREASE FROM THERE.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
CLEAR AND CHILLY THIS MORNING WITH MANY LOCATIONS IN THE INLAND
VALLEYS AND COASTAL AREAS REPORTING MINIMUM TEMPERATURES IN THE
30S. INCREASING HIGH CLOUDS FROM THE SOUTHWEST WILL INHIBIT
RADIATION COOLING TONIGHT SO THE LOW TEMPS TOMORROW MORNING WILL
LIKELY NOT BE AS LOW AS THIS MORNING. SURFACE PRESSURE GRADIENTS
HAVE TURNED OFFSHORE AND LOCALLY GUSTY NORTHEAST TO EAST WINDS
HAVE DEVELOPED IN THE MTN PASSES AND ALONG THE FOOTHILLS. GUSTS OF
25-30 MPH HAVE BEEN REPORTED IN THE LAST HOUR, WITH A COUPLE OF
LOCATIONS REPORTING GUSTS OF 40+ MPH. OFFSHORE FLOW WILL PEAK
THIS MORNING WITH THE WIND-PRONE LOCATIONS GUSTING UP TO 40 MPH AT
TIMES. OFFSHORE FLOW WILL GRADUALLY WEAKEN THROUGH SUNDAY BEFORE
TURNING WEAKLY ONSHORE MONDAY AFTERNOON.
A WARMING TREND BEGINS TODAY AS A HIGH PRESSURE RIDGE BUILDS OVER
THE WESTERN US. THIS RIDGE WILL DOMINATE OUR WEATHER PATTERN
THROUGH NEXT WEEK, BRINGING FAIR AND WARM WEATHER. TEMPERATURES
WILL TREND UPWARD THROUGH MONDAY THEN FLUCTUATE FROM DAY TO DAY
PEAKING AGAIN NEXT FRIDAY. ON MONDAY, TEMPERATURES WILL REACH THE
LOW 80S IN THE INLAND VALLEYS AND LOWER DESERTS...ANYWHERE FROM 8
TO 15 DEGREES ABOVE SEASONAL AVERAGES. ALL OTHER AREAS WILL ALSO BE
WARMER THAN NORMAL. NEXT FRIDAY, TEMPERATURES WILL BE IN THE MID
TO UPPER 80S WEST OF THE MTNS AND IN THE LOW 90S IN THE LOWER
DESERTS...12 TO 18 DEGREES ABOVE SEASONAL AVERAGES.
TIMING THE RETURN OF MARINE LAYER CLOUDS/FOG IN THE COASTAL AREAS
IS UNCERTAIN AT BEST BUT IT SEEMS UNLIKELY THAT THEY WILL RETURN
BEFORE TUESDAY. SOME MODELS INDICATE A RETURN OF THE MARINE LAYER
CLOUDS/FOG FOR NEXT WEDNESDAY AS A SHORTWAVE TROUGH PASSES TO THE
NORTH AND WEAKENS THE RIDGE BUT CONFIDENCE IN THIS OUTCOME REMAINS
LOW.
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...PG
AVIATION/MARINE...ZUBER/WESTERINK
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