019
FXUS66 KSGX 251728
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
1028 AM PDT WED MAR 25 2026
SYNOPSIS
HIGH TEMPERATURES FOR INLAND AREAS WILL REMAIN AROUND 15 TO 20
DEGREES ABOVE AVERAGE INTO THE WEEKEND, WITH SOME RECORD DAILY
HIGH TEMPERATURES CONTINUING TO BE TIED OR BROKEN, MAINLY FOR THE
MOUNTAINS AND DESERTS BUT OCCASIONALLY FOR THE INLAND VALLEYS AS
WELL. THE MARINE LAYER PRESENCE WILL CONTINUE, WITH SOME SMALL
DAY-TO-DAY VARIATIONS. COASTAL LOW CLOUDS NOT LIKELY TO SPREAD AS
FAR INLAND ON FRIDAY AND SATURDAY. MID AND HIGH CLOUDS WILL
SPREAD ACROSS THE AREA FOR THIS WEEKEND INTO EARLY NEXT WEEK. HIGH
TEMPERATURES WILL LOWER ONLY SLIGHTLY DURING THE WEEKEND, WITH
GREATER COOLING SPREADING INLAND EARLY NEXT WEEK AS A LOW PRESSURE
SYSTEM MOVES TOWARD THE CALIFORNIA COAST.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
THE MORNING SOUNDING SHOWS THE MARINE LAYER MARGINALLY SHALLOWER
THAN YESTERDAY, HOWEVER THE LOW CLOUDS AND FOG HAD SPREAD ABOUT
AS FAR INLAND. AT THIS HOUR, THE LOW CLOUDS HAVE CLEARED TO THE
COAST BUT WILL LIKELY LINGER AT THE BEACHES INTO THE AFTERNOON DUE
TO THE STRENGTH OF THE INVERSION. TEMPERATURES THIS MORNING ARE
NEAR OR A LITTLE LOWER THAN AT THIS TIME YESTERDAY, MAINLY IN THE
LOW ELEVATIONS WEST OF THE MOUNTAINS.
DAYTIME HIGH TEMPERATURES WILL GRADUALLY TREND HIGHER THROUGH SATURDAY
AS THE HIGH PRESSURE RIDGE PERSISTS OVER THE SOUTHWEST. HIGH
TEMPERATURES TODAY WILL RANGE FROM AROUND 5 DEGREES ABOVE AVERAGE
NEAR THE COAST TO AROUND 20 DEGREES ABOVE AVERAGE IN THE
MOUNTAINS AND HIGH DESERT. IT LOOKS LIKE SATURDAY WILL BE THE
WARMEST DAY WITH HIGH TEMPERATURES RANGING FROM AROUND 10-12 DEGREES
ABOVE AVERAGE NEAR THE COAST TO 20-25 DEGREES ABOVE AVERAGE IN THE
SAN DIEGO COUNTY MOUNTAINS. SATURDAY HIGH TEMPERATURES WILL RANGE
FROM THE 70S TO LOW 80S NEAR THE COAST TO THE UPPER 80S TO MID
90S FOR THE INLAND EMPIRE, WITH THE UPPER 90S TO 103 FOR THE
LOWER DESERTS.
ONSHORE FLOW TODAY WILL BE STRONG ENOUGH TO PRODUCE SOUTHWEST
WINDS GUSTING 30-40 MPH IN THE FAVORED AREAS OF THE DESERTS AND
DESERT MTN SLOPES THIS AFTERNOON AND EVENING. ONSHORE FLOW WILL BE
NOTICEABLY WEAKER FOR THURSDAY THEN STRENGTHEN SOMEWHAT AGAIN ON
FRIDAY.
FOR SUNDAY THROUGH NEXT WEDNESDAY...TEMPERATURES WILL TREND LOWER
AND CLOUDS WILL GENERALLY INCREASE AS A LOW PRESSURE SYSTEM
APPROACHES THE CA COAST FROM THE WEST, DISPLACING THE HIGH
PRESSURE RIDGE TO THE SOUTHEAST INTO TX. NEXT WEDNESDAY WILL
LIKELY BE THE COOLEST DAY, WITH DAYTIME HIGH TEMPS IN THE 60S-70S
WEST OF THE MTNS AND IN THE 80S IN THE LOW DESERTS.
A SIGNIFICANT PERCENTAGE OF ENSEMBLE MEMBERS (MOST FROM THE
EUROPEAN MODEL) INDICATE THE POTENTIAL FOR PRECIP NEXT TUE/WED AS
THE LOW PRESSURE SYSTEM MOVES INLAND. AT THIS TIME, THE NATIONAL
BLEND OF MODELS INDICATE UP TO A 35 PERCENT CHANCE (MAINLY IN THE
MTNS) FOR AT LEAST 0.01 INCH. ANY RAINFALL WILL LIKELY BE CONFINED
TO AREAS FROM THE MTNS WESTWARD. UNCERTAINTY IS STILL HIGH DUE TO
THE SPREAD AMONG THE MODEL SOLUTIONS.
AVIATION
250930Z...LOW CLOUDS BASED 800-1200 FEET MSL AND TOPS TO 1500 FEET
WILL CONTINUE TO FILL COASTAL AREAS AND WESTERN VALLEYS THIS
MORNING. VIS REDUCED 3-5SM MAINLY OVER HIGHER COASTAL TERRAIN AND
VALLEYS. SCATTER OUT TO OCCUR 16-18Z. PATCHY AND INTERMITTENT LOW
CLOUDS COULD LINGER ALONG IMMEDIATE COAST THEREAFTER. LOW CLOUDS
WITH SLIGHTLY LOWER BASES WILL INCREASE AND SPREAD INLAND AFTER 02Z.
COVERAGE A LITTLE LESS EXTENSIVE. CLOUD BASES AND VIS SHOULD BE
A LITTLE LOWER TONIGHT INTO THURSDAY MORNING.
OTHERWISE, MOSTLY CLEAR AND VFR CONDITIONS WILL PREVAIL TODAY AND
TONIGHT.
MARINE
NO HAZARDOUS MARINE CONDITIONS EXPECTED THROUGH SUNDAY.
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...CSP/MM
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