803
FXUS66 KSGX 280946
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
246 AM PDT MON JUL 28 2025
SYNOPSIS
THERE WILL BE A WARMING TREND THROUGH WEDNESDAY WITH HIGH
TEMPERATURES WARMING TO AROUND AVERAGE WITH THE GREATEST WARMING,
OF AROUND 10 DEGREES, FOR THE INLAND VALLEYS. THIS WILL BE
FOLLOWED BY MINOR DAY-TO-DAY CHANGES THROUGH NEXT WEEKEND.
DRY WEATHER WILL CONTINUE WITH NIGHT AND MORNING COASTAL LOW
CLOUDS SPREADING INTO PORTIONS OF THE WESTERN VALLEYS LATE EACH
NIGHT.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
SHORT TERM (TODAY THROUGH WEDNESDAY)
HIGH PRESSURE TO THE SOUTHEAST WILL BRING A WARMING TREND THROUGH
WEDNESDAY WITH HIGH TEMPERATURES GENERALLY WARMING TO AROUND
AVERAGE. THE GREATEST WARMING THROUGH WEDNESDAY, OF AROUND 10
DEGREES, WILL BE FOR THE INLAND VALLEYS. HIGH TEMPERATURES ON
WEDNESDAY WILL RANGE FROM THE 70S NEAR THE COAST TO THE 90S FOR
THE INLAND EMPIRE WITH 106 TO 112 FOR THE LOWER DESERTS.
THE MARINE LAYER WILL DECREASE IN DEPTH FROM AROUND 2500 TO 3000
FEET DEEP EARLY THIS MORNING TO AROUND 2000 FEET DEEP FOR THE
LATTER HALF OF THE WEEK THROUGH NEXT WEEKEND. NIGHT AND MORNING
COASTAL LOW CLOUDS WILL SPREAD INTO PORTIONS OF THE WESTERN
VALLEYS LATE EACH NIGHT.
LONG TERM (THURSDAY THROUGH SUNDAY)
ONSHORE LOWER-LEVEL FLOW AND DRY SOUTHWEST FLOW ALOFT WILL REMAIN
ACROSS CALIFORNIA WITH HIGH PRESSURE TO THE SOUTH CENTERED FROM
NORTHERN AND CENTRAL BAJA TO TEXAS. THERE WILL BE MINOR DAY-TO-DAY
DIFFERENCES IN HIGH TEMPERATURES THROUGH NEXT WEEKEND. DRY
WEATHER WILL CONTINUE WITH NIGHT AND MORNING COASTAL LOW CLOUDS
SPREADING INTO PORTIONS OF THE WESTERN VALLEYS LATE EACH NIGHT.
AVIATION
280800Z....COASTS/VALLEYS...SATELLITE SHOWS LOW CLOUDS WITH BASES
AROUND 1500FT MSL AND TOPS TO 2200FT HAVE SUCCESSFULLY PUSHED INTO
THE COASTAL BASINS AND WESTERN VALLEYS WITH THE EXCEPTION OF FAR
NORTHERN ORANGE COUNTY. CLOUDS WILL CONTINUE TO PUSH FURTHER INLAND,
REACHING A FEW SPOTS IN THE INLAND EMPIRE. 25% CHANCE OF A BRIEF CIG
AT KONT AFTER 12Z. CLOUDS BEGIN TO RETREAT TO THE COAST BY 15-16Z,
WITH CLEARING AT COASTAL SITES BY 17-18Z. SOME LINGERING LOW STRATUS
ALONG THE SAN DIEGO COUNTY BEACHES POSSIBLE BEYOND THIS POINT. LOW
CLOUDS DEVELOP ONCE AGAIN TONIGHT, PUSHING INLAND BY 02-03Z. BASES
WILL BE SIMILAR OR SLIGHTLY LOWER, WITH LESSER CHANCES FOR CIGS IN
THE INLAND EMPIRE AND HIGHER PROBABILITIES OF VIS REDUCTIONS FOR
COASTAL TERRAIN AND VALLEYS.
MOUNTAINS/DESERTS
MOSTLY CLEAR WITH VFR CONDITIONS THROUGH
TUESDAY MORNING.
MARINE
NO HAZARDOUS MARINE CONDITIONS ARE EXPECTED THROUGH FRIDAY.
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...ZUBER
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page