580
FXUS66 KSGX 150112
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
612 PM PDT THU MAY 14 2026
SYNOPSIS
BRIEF WARMING TREND EXPECTED THROUGH FRIDAY, WITH COOLER CONDITIONS
OVER THE WEEKEND, AND ADDITIONAL WARMING NEXT WEEK. GUSTY
WESTERLY WINDS OVER THE MOUNTAINS AND INTO THE DESERTS THIS
WEEKEND. NIGHT AND MORNING LOW CLOUDS AND FOG WILL BE PRESENT EACH
DAY THROUGH THE FORECAST PERIOD ALONG THE COAST AND INTO PORTIONS
OF THE VALLEYS AT TIMES.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
BRIEF WARMING TREND FOR INLAND LOCATIONS TODAY AND FRIDAY. HIGH
RESOLUTION GUIDANCE IS INDICATING A COASTAL EDDY WILL BE PRESENT
FRIDAY THROUGH SUNDAY WHICH SHOULD PUSH MARINE LAYER LOW CLOUDS
INTO THE COASTAL BASIN EACH NIGHT MORNING THIS WEEKEND. THE EDDY
MAY ALSO PREVENT LOW CLOUDS FROM COMPLETELY CLEARING THE COAST OR
PUSH CLEARING TO LATER IN THE AFTERNOON. PATCHY DRIZZLE MAY
DEVELOP, MOST LIKELY ON SATURDAY AS A TROUGH OF LOW PRESSURE
PASSES TO OUR NORTH.
AS THE AFOREMENTIONED TROUGH DIGS SOUTH INTO THE PACIFIC
NORTHWEST AND GREAT BASIN, WINDS WILL INCREASE OVER THE MOUNTAINS
AND DESERTS. GUSTY WINDS WILL DEVELOP LATE SATURDAY MORNING AND
CONTINUE INTO SUNDAY, WEAKENING BY LATE SUNDAY NIGHT. WINDS WILL
BE STRONGEST ON THE EAST FACING MOUNTAIN SLOPES, THROUGH PASSES,
AND INTO THE DESERTS. PEAK GUSTS WILL BE MOSTLY 40-60 MPH, WITH
LOCAL GUSTS TO 65 MPH POSSIBLE IN WIND PRONE LOCATIONS.
ADDITIONALLY TEMPERATURES WILL FALL A FEW DEGREES, BECOMING
SLIGHTLY BELOW NORMAL FOR MOST LOCATIONS.
TEMPERATURES ARE EXPECTED TO WARM FOR EARLY TO MID-NEXT WEEK. MOST
ENSEMBLE CLUSTERS INDICATE A RIDGE OF HIGH PRESSURE IN THE VICINITY
OF THE US WEST COAST BY MONDAY WITH VARIATIONS IN PLACEMENT. A MORE
EASTERLY POSITION (PUTTING THE RIDGE OVER CALIFORNIA) WOULD LEAD TO
A WARMER SOLUTION WITH A MORE WESTERLY POSITION (KEEPING THE RIDGE
OVER THE EASTERN PACIFIC) WOULD KEEP TEMPERATURES MORE MODERATE.
AVIATION
150000Z...COAST/VALLEYS...FEW-SCT, AND OCCASIONALLY BKN, LOW CLOUDS
(BASED AROUND 2000-2500FT MSL) ARE FILLING BACK IN ACROSS COASTAL
SAN DIEGO COUNTY FROM SOUTH TO NORTH THIS EVENING. EXPECTING CIGS TO
SPREAD NORTHWARD AND INLAND, FILLING IN THROUGH INLAND VALLEYS AND
INTO ORANGE COUNTY BY 06-09Z, AND THROUGH THE INLAND EMPIRE BY 12Z -
- 80% CHANCE FOR CIGS TO REACH KONT AND 60% AT KSBD. OVERNIGHT CLOUD
BASES LIKELY TO SETTLE DOWN TO 1700-2200FT MSL WITH VIS RESTRICTIONS
LIMITED LOCALLY TO INLAND VALLEYS, AND WHERE CLOUDS INTERSECT
TERRAIN. LOW CLOUDS SCATTER BACK TO THE COASTS BY 17-18Z FOR SAN
DIEGO COUNTY, CLOSER TO 19Z FOR ORANGE COUNTY.
MOUNTAINS/DESERTS...ELEVATED WESTERLY WIND GUSTS 25-40 KT
CONTINUING. MOD UP/DOWNDRAFTS AND LOCAL LLWS IN LEE OF MOUNTAINS.
WINDS SLOWLY WEAKEN TONIGHT INTO FRIDAY MORNING. OTHERWISE, SKC
EXPECTED THROUGH THE PERIOD.
MARINE
NO HAZARDOUS MARINE CONDITIONS ARE EXPECTED THROUGH SATURDAY
MORNING. WINDS ARE EXPECTED TO REACH 20-30 KTS OVER OUTER COASTAL
WATERS FROM LATE SATURDAY INTO EARLY SUNDAY. STRONGEST GUSTS NEAR
SAN CLEMENTE ISLAND. THIS WILL GENERATE HAZARDOUS CONDITIONS FOR
SMALL CRAFT WITH CHOPPY SEAS REACHING 8-11 FEET THROUGH SUNDAY
MORNING.
SGX WATCHES/WARNINGS/ADVISORIES
CA...WIND ADVISORY FROM 11 AM SATURDAY TO 11 PM PDT SUNDAY FOR APPLE
AND LUCERNE VALLEYS-SAN BERNARDINO COUNTY MOUNTAINS.
WIND ADVISORY FROM 2 PM SATURDAY TO 11 PM PDT SUNDAY FOR
RIVERSIDE COUNTY MOUNTAINS-SAN DIEGO COUNTY DESERTS-SAN
DIEGO COUNTY MOUNTAINS-SAN GORGONIO PASS NEAR BANNING.
PZ...NONE.
PUBLIC...CO
AVIATION/MARINE...MUNYAN
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