340
FXUS66 KSGX 021057
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
357 AM PDT WED JUL 2 2025
SYNOPSIS
MINOR COOLING IS EXPECTED EACH DAY THROUGH THURSDAY. GRADUAL
WARMING IS EXPECTED FRIDAY THROUGH THE WEEKEND. NIGHT AND MORNING
LOW CLOUDS AND FOG ARE EXPECTED TO REMAIN PERSISTENT ALONG THE
COAST AND INTO PORTIONS OF THE VALLEYS THROUGH THE WEEK.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
SHORT TERM (TODAY THROUGH FRIDAY)
A LOW PRESSURE SYSTEM MOVING INLAND THROUGH CALIFORNIA TODAY WILL
CONTINUE TO SPREAD SLOW COOLING INLAND THROUGH THURSDAY WITH
THURSDAY HIGH TEMPERATURES RANGING FROM AROUND 70 NEAR THE COAST
TO THE 80S AND LOWER 90S FOR THE INLAND EMPIRE WITH 106 TO 110 FOR
THE LOWER DESERTS.
A MARINE LAYER NEAR 2000 FEET DEEP WILL DEEPEN TO AROUND 2500 FEET
ON THURSDAY WITH NIGHT AND MORNING COASTAL LOW CLOUDS SPREADING
FARTHER INTO THE VALLEYS FOR EARLY THURSDAY AND EARLY FRIDAY.
LONG TERM (SATURDAY THROUGH TUESDAY)
DRIER WITH SLOW WARMING THROUGH THE WEEKEND WITH HIGH TEMPERATURES
WARMING AROUND 5 DEGREES FROM THURSDAY THROUGH SUNDAY. WITH THE
WARMING, HIGH TEMPERATURES ON SUNDAY WILL RANGE FROM THE LOWER 70S
NEAR THE COAST TO THE UPPER 80S TO MID 90S FOR THE INLAND EMPIRE
WITH 109 TO 113 FOR THE LOWER DESERTS.
HIGH PRESSURE TO THE SOUTHEAST WILL CONTINUE THE WARMING INTO THE
MIDDLE OF NEXT WEEK WITH WEDNESDAY HIGH TEMPERATURES 4 TO 8
DEGREES ABOVE AVERAGE FOR INLAND AREAS WITH HIGH TEMPERATURES OF
112 TO 115 FOR THE LOWER DESERTS AND IN THE 90S TO 103 FOR THE
INLAND EMPIRE.
THERE COULD BE SOME INFLUX OF MONSOONAL MOISTURE AROUND TUESDAY
AND WEDNESDAY OF NEXT WEEK WITH NBM THUNDER PROBABILITIES
INCREASING TO 10 TO 15 PERCENT EACH AFTERNOON FOR THE SAN
BERNARDINO MOUNTAINS. NIGHT AND MORNING COASTAL LOW CLOUDS WILL
CONTINUE TO SPREAD INLAND INTO PORTIONS OF THE WESTERN VALLEYS
LATE EACH NIGHT.
AVIATION
021000Z....COAST/VALLEYS...LOW CLOUDS WITH BASES 1000-1500 FT MSL
HAVE PUSHED 15-20 MILES INLAND COVERING COASTAL AREAS AND WESTERN
VALLEYS OF SD/ORANGE COUNTIES. ANY FURTHER INLAND PUSH WILL BE SLOW
TO OCCUR. ONLY 40% CHANCE OF BKN CIGS AT KONT AFTER 12Z. LOCAL VIS 3-
5 SM IN BR/HZ WHERE CLOUDS NEAR TERRAIN IN THE VALLEYS, INCLUDING
VCTY KAJO, KRNM, KCNO. CLOUDS CLEARING TO THE COAST 15-18Z. 50-60%
CHANCE CIGS REMAIN BKN AT SD COUNTY BEACHES THROUGH THE AFTERNOON.
CLOUDS PUSH INLAND AGAIN AFTER 03Z WITH BASES NEAR 900-1300 FT MSL
AND SIMILAR INLAND EXTENT.
MOUNTAINS/DESERTS...SCT CLOUDS IN THE 10-15 KFT LAYER AND OCCASIONAL
VIRGA/LIGHT SHOWERS CONTINUING OVER THE DESERTS THROUGH ABOUT 18Z
WEDNESDAY. OTHERWISE CLEAR WITH UNRESTRICTED VIS THROUGH WEDNESDAY
EVENING.
MARINE
NO HAZARDOUS MARINE WEATHER CONDITIONS ARE EXPECTED THROUGH SUNDAY.
BEACHES
BUILDING SOUTHERLY SWELL (190 DEGREES) OF 3 FEET AT 14-16 SECONDS
WILL GENERATE ELEVATED SURF OF 3-5 FT WITH SETS TO 6 FT ALONG
SOUTHERLY FACING BEACHES THU-SAT. IN ADDITION, STRONG RIP AND
LONGSHORE CURRENTS EXPECTED AT ALL BEACHES FRIDAY AND SATURDAY.
SWELL AND SURF WILL BEGIN TO LOWER ON 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...17
AVIATION/MARINE/BEACHES...KW
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