634
FXUS66 KSGX 221144
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
344 AM PST SAT FEB 22 2025
SYNOPSIS
LOW CLOUDS AND FOG WILL HUG THE COAST NIGHTS/MORNINGS TODAY INTO
SATURDAY. WARM WEATHER WILL CONTINUE THROUGH THE MIDDLE OF NEXT
WITH HIGHS AROUND 10-20 DEGREES ABOVE NORMAL, ALONG WITH ELEVATED
SANTA ANA WINDS AT TIMES. AN AREA OF LOW PRESSURE OFF THE COAST
WILL MOVE INTO OUR VICINITY BY LATER NEXT WEEK, BRINGING COOLER
WEATHER WITH A CHANCE OF PRECIPITATION.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
LIGHT OFFSHORE FLOW IS PRESENT THIS MORNING WITH WIND GUSTS NEAR
10-25 MPH ACROSS MOUNTAIN PASSES AND CANYONS. WINDS WILL CONTINUE
TO DECREASE THROUGH THE MORNING HOURS. THIS OFFSHORE WIND PATTERN
IS KEEPING CLOUDS AND FOG CONFINED TO COASTAL AREAS THIS MORNING,
WITH SOME SPOTS REPORTING DENSE FOG (VISIBILITY AT OR BELOW 1/4
MILE). FOG WILL BEGIN TO DISSIPATE BY LATER THIS MORNING, BUT SOME
LOW CLOUDS AND HAZE MAY LINGER NEAR THE BEACHES INTO THE
AFTERNOON. WARM WEATHER WILL CONTINUE FOR YOUR WEEKEND WITH MOSTLY
CLEAR CONDITIONS AS HIGH PRESSURE DOMINATES OFFSHORE. HIGHS WILL
IN THE 70S AND 80S FOR MOST LOWER ELEVATIONS WITH 60S AT THE
BEACHES AND MOUNTAIN AREAS.
BY TUESDAY AND WEDNESDAY, PRESSURE HEIGHTS WILL RISE ACROSS THE
REGION WITH STRONGER OFFSHORE DEVELOPING BY WEDNESDAY. THIS WILL
LEAD TO THE WARMEST TEMPERATURES OF THE YEAR SO FAR FOR MANY
AREAS WITH LOCALES WARMING UP TO 20 DEGREES ABOVE AVERAGE.
CONTINUED TO USE HIGHER MODEL TEMPERATURE GUIDANCE AS ANOMALOUS
STRONG RIDGE ANCHORS ITSELF OVER THE DESERT SOUTHWEST. HIGH
TEMPERATURES WELL INTO THE 80S WILL OCCUR WEST OF THE MOUNTAINS,
WITH SOME SPOTS POTENTIALLY REACHING THE 90 DEGREE MARK. PLACES
THAT WILL REACH THIS MARK WITH GREATEST CERTAINTY WILL BE ACROSS
THE COACHELLA VALLEY. THOUGH WE ARE STILL IN WINTER, TAKE
PRECAUTIONS TO BEAT THE HEAT BY LIMITING TIME OUTDOORS AND TAKING
WATER BREAKS. UPPER LEVEL FLOW WILL TURN OFFSHORE BY WEDNESDAY, SO
SANTA ANA WINDS ACROSS PASSES INTO ADJACENT VALLEYS WILL BECOME
ELEVATED. MODELS BEGIN TO SHOW THE RIDGE WEAKENING AND PUSHING OFF
TO THE EAST BY THURSDAY. THIS WILL COOL TEMPERATURES OFF SOME,
THOUGH STILL WELL ABOVE AVERAGE.
AN AREA OF LOW PRESSURE WILL MOVE OFF THE COAST INTO OUR REGION BY
LATER NEXT WEEK, BRINGING MUCH COOLER WEATHER. ENSEMBLE MODELS
ARE STILL HAVING A DIFFICULT TIME PINNING DOWN EXACTLY WHEN THIS
WILL MOVE ONTO THE COAST OF SOCAL OR MEXICO, MOST LIKELY FRIDAY
OR SATURDAY. GEFS/EPS MODELS BEGIN TO INDICATE A PATTERN OF WETTER
MEMBERS BY THIS TIME AS WELL. CHANCES FOR PRECIPITATION ARE IN
THE FORECAST, THOUGH SMALL, AT THIS TIME.
AVIATION
221100Z... COAST...LOW CLOUDS/FOG HAVE FILLED IN FOR THE LAST FEW
HOURS, NOW COVERING ALL OF THE COASTAL AREAS AND UP TO 10 MILES
INLAND. CIGS ARE GENERALLY <200-500FT MSL WITH ASSOCIATED VIS OF 0-2
SM IN FG/BR. CLOUDS BEGIN TO ERODE FROM EAST TO WEST STARTING AROUND
14Z, WITH CLEARING TO THE COASTS BY 17-18Z THIS MORNING THOUGH LOCAL
BKN CIGS OR REDUCED VIS IS POSSIBLE ALONG THE BEACHES INTO THE
AFTERNOON. CLOUDS LOOK TO REDEVELOP AND PUSH BACK ASHORE AFTER 06Z
THIS EVENING INTO SUNDAY MORNING, WITH VERY SIMILAR COVERAGE, CIGS,
AND VIS AS THIS MORNING.
VALLEYS/MOUNTAINS/DESERTS...LOCAL NORTH-NORTHEAST WINDS WITH GUSTS
20-30 KT WILL CONTINUE THROUGH 18Z THIS MORNING, MAINLY IN THE
FOOTHILLS INCLUDING BELOW CAJON PASS. OTHERWISE, MOSTLY CLEAR SKIES
WITH UNRESTRICTED VIS WILL PREVAIL THROUGH SUNDAY MORNING.
MARINE
NO HAZARDOUS MARINE CONDITIONS ARE EXPECTED THROUGH WEDNESDAY.
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...APR
AVIATION/MARINE...MUNYAN
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