563
FXUS66 KSGX 261910
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
1210 PM PDT THU MAR 26 2026
SYNOPSIS
WELL ABOVE AVERAGE TEMPERATURES WILL CONTINUE THROUGH THE WEEKEND.
LOW CLOUDS WITH AREAS OF FOG WILL BE PRESENT TONIGHT INTO FRIDAY
MORNING, WITH LOW CLOUDS AND FOG LESS LIKELY OVER THE WEEKEND DUE TO
WIDESPREAD HIGH CLOUDS. COOLER, WINDIER, AND POTENTIALLY WETTER
CONDITIONS POSSIBLE FOR THE MIDDLE OF NEXT WEEK.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
HIGH TEMPERATURES TODAY ARE EXPECTED TO BE SIMILAR TO YESTERDAY'S
WITH MULTIPLE INLAND LOCATIONS FORECAST TO BREAK OR TIE THEIR DAILY
HIGH TEMPERATURE RECORDS. THE LIST OF LOCATIONS THAT BROKE OR TIED
THEIR DAILY HIGH OR LOW TEMPERATURE RECORDS YESTERDAY IS ON OUR
WEATHER.GOV/SANDIEGO HOMEPAGE. RECORD BREAKING TEMPERATURES FOR
INLAND LOCATIONS WILL CONTINUE THROUGH SUNDAY.
HIGH TEMPERATURES FOR INLAND LOCATIONS WILL PEAK FRIDAY THROUGH
SUNDAY WITH AREAS OF MODERATE HEATRISK IN THE VALLEYS AND DESERTS.
ON SATURDAY, HIGH TEMPERATURES ARE EXPECTED TO RUN 20 TO 25 DEGREES
ABOVE AVERAGE FOR INLAND AREAS. AREAS OF LOW CLOUDS AND FOG ARE
EXPECTED ALONG THE COAST TONIGHT INTO FRIDAY MORNING, WITH COVERAGE
OF LOW CLOUDS BECOMING PATCHIER SATURDAY AND SUNDAY.
A PATTERN CHANGE IS EXPECTED NEXT WEEK AS AN AREA OF LOW PRESSURE
APPROACHES THE US WEST COAST. WE HAVE HIGH CONFIDENCE THAT THE
INCOMING AREA OF LOW PRESSURE TEMPERATURES WILL COOL CONDITIONS BACK
TO NEAR AVERAGE FOR THIS TIME OF YEAR BY NEXT WEDNESDAY.
ADDITIONALLY, WINDS SHOULD INCREASE OVER THE MOUNTAINS AND DESERTS
ALTHOUGH HOW WINDY IT GETS WILL BE LARGELY DEPENDENT ON THE TRACK
OF THE LOW. THERE REMAINS SOME UNCERTAINTY IN THE TIMING OF THE
LOW'S PASSAGE, WITH MOST SOLUTIONS SHOWING THE LOW PASSING
SOMETIME WEDNESDAY OR THURSDAY. ABOUT 50 PERCENT OF SOLUTIONS KEEP
THE WEST COAST UNDER THE LOW'S INFLUENCE INTO FRIDAY.
THE TRACK OF THE LOW WILL ALSO HAVE IMPLICATIONS ON OUR
PRECIPITATION CHANCES. ECMWF AND GFS ENSEMBLE GUIDANCE HAS TRENDED
DRIER ON THE MOST RECENT RUNS COMPARED TO PREVIOUS RUNS. THIS IS
LIKELY DUE TO TRENDS IN THE GUIDANCE THAT ARE KEEPING THE LOW
FURTHER NORTH WITH MORE OF AN INSIDE TRACK BY THE TIME IT REACHES
SOUTHERN CALIFORNIA. THERE ARE STILL SOME SOLUTIONS SHOWING THE
POTENTIAL FOR AT LEAST LIGHT PRECIPITATION AS EARLY AS TUESDAY NIGHT
CONTINUING THROUGH AS LATE AS FRIDAY. CURRENT FORECAST HAS THE
HIGHEST CHANCES OF RAIN WEDNESDAY. PROBABILITY OF 72-HR RAINFALL
TOTALS EXCEEDING 0.25" ARE HIGHEST IN THE SAN BERNARDINO COUNTY
MOUNTAINS AT 30 TO 40 PERCENT AND 15 TO 25 PERCENT ELSEWHERE.
AVIATION
261720Z...LOW CLOUDS HAVE CLEARED THE COAST WITH SOME MINOR VIS
RESTRICTIONS LINGERING AT KONT. LOW CLOUDS WILL RETURN ALONG THE
COAST THIS EVENING AFTER 02Z-03Z FRIDAY AND GRADUALLY INCREASE IN
COVERAGE (07Z-09Z) WITH BASES 300-800FT MSL. REDUCED VIS 0-5SM WILL
BE POSSIBLE IN FOG ON HIGHER COASTAL TERRAIN AND WESTERN VALLEYS.
VIS RESTRICTIONS EXPECTED 4-6SM FOR COASTAL TAF SITES. CONDITIONS
WILL IMPROVE AFTER 16Z-19Z FRIDAY.
OTHERWISE, MOSTLY CLEAR SKIES AND VFR CONDITIONS WILL PREVAIL.
MARINE
NO HAZARDOUS MARINE CONDITIONS EXPECTED THROUGH TUESDAY.
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...CO
AVIATION/MARINE...VILLAFANE
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