989
FXUS66 KSGX 021849
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
1149 AM PDT TUE JUN 2 2026
SYNOPSIS
WARMING CONDITIONS FOR INLAND LOCATIONS THROUGH THURSDAY. COASTAL
LOW CLOUDS AND FOG WILL BE PRESENT EACH NIGHT AND MORNING, REACHING
INTO PORTIONS OF THE VALLEYS. COOLING CONDITIONS EXPECTED FRIDAY
THROUGH SUNDAY WITH A FEW DEGREES OF WARMING MONDAY AND NEXT
TUESDAY.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
AN UPPER LEVEL AREA OF LOW PRESSURE CURRENTLY OVER THE CALIFORNIA
BIGHT WILL SLOWLY MOVE SOUTH AND EAST WEDNESDAY AND THURSDAY. HIGH
TEMPERATURES TODAY ARE EXPECTED TO BE SIMILAR TO MONDAY'S, WITH
WARMING CONDITIONS FOR WEDNESDAY AND THURSDAY AS WEAK RIDGING
DEVELOPS OVER SOUTHERN CALIFORNIA. THE MID-WEEK WARMING WILL BRING
HIGHS TO 5 TO 10 DEGREES ABOVE AVERAGE FOR THE VALLEYS, MOUNTAINS,
AND DESERTS AND 3 TO 6 DEGREES ABOVE AVERAGE ALONG THE COAST. NIGHT
AND MORNING LOW CLOUDS AND FOG WILL SPREAD FROM THE COAST INTO THE
VALLEYS TONIGHT INTO WEDNESDAY MORNING BECOMING SHALLOWER INTO
THURSDAY MORNING, ONLY REACHING THE WESTERN VALLEYS.
AN AREA OF LOW PRESSURE WILL APPROACH THE PACIFIC NORTHWEST FRIDAY,
DIGGING SOUTH INTO CALIFORNIA BY SUNDAY. THIS WEATHER SYSTEM WILL
BRING A FEW DEGREES OF COOLING EACH DAY FRIDAY THROUGH SUNDAY,
TAKING TEMPERATURES FOR INLAND LOCATIONS TO FEW DEGREES BELOW
NORMAL. ADDITIONALLY, THE MARINE LAYER WILL DEEPEN AGAIN WITH LOW
CLOUDS EXPECTED TO REACH INTO THE VALLEYS.
FOR MONDAY, WEAK TROUGHING LOOKS LIKE IT REMAINS OVER CALIFORNIA
KEEPING HIGHS SLIGHTLY BELOW AVERAGE. BY NEXT TUESDAY THE NBM SHOWS
A FEW DEGREES OF WARMING WHICH WILL BRING HIGHS TO JUST ABOVE
AVERAGE.
AVIATION
021800Z...COAST/VALLEYS...LOW CLOUDS TO REDEVELOP AND MOVE ASHORE
AFTER 03Z TONIGHT AND SPREAD INTO WESTERN VALLEYS AND PARTS OF THE
INLAND EMPIRE OVERNIGHT INTO WEDNESDAY. BASES WILL BE AROUND 1000-
1500 FEET MSL, WITH VIS 2-5SM IN INLAND VALLEYS. SCATTER OUT 16-18Z.
MOUNTAINS/DESERTS...MOSTLY CLEAR SKIES AND VFR CONDITIONS TODAY AND
TONIGHT.
MARINE
NO HAZARDOUS MARINE CONDITIONS ARE EXPECTED THROUGH SATURDAY.
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...CSP
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