775
FXUS66 KSGX 141844
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
1144 AM PDT MON SEP 14 2026
SYNOPSIS...
SUBTLE COOLING WILL CONTINUE THROUGH THE MIDDLE OF THE WEEK AS A
TROUGHING PATTERN REMAINS OVER THE WEST COAST WITH TEMPERATURES NEAR
TO UP TO 10 DEGREES BELOW AVERAGE. THIS PATTERN WILL BRING NIGHT AND
MORNING LOW CLOUDS FOR AREAS WEST OF THE MOUNTAINS WITH BREEZY WINDS
ACROSS THE DESERT SLOPES AND DESERTS EACH DAY. SUBTLE WARMING IS
EXPECTED BY LATER THIS WEEK WITH TEMPERATURES RISING BACK TO NEAR
NORMAL.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
A RINSE AND REPEAT SORT OF DAY ACROSS THE REGION TODAY AS LOW CLOUDS
DISSIPATE THIS MORNING NEAR THE COAST WITH A COASTAL EDDY OFFSHORE.
FORMED LAST NIGHT, BRINGING IN LOW CLOUDS TO COASTAL AREAS THIS
MORNING. TEMPERATURES WILL BE MORE COMFORTABLE TODAY WITH HIGHS NEAR
NORMAL ACROSS THE REGION.
A WEAK TROUGHING PATTERN OVER THE WEST WILL BE REINFORCED WITH
ANOTHER SHOT OF COOLER AIR AS ANOTHER LOW PRESSURE SYSTEM MOVES
SOUTHWARD TUESDAY THROUGH THURSDAY. PRESSURE HEIGHTS WILL CONTINUE
FALL, LEADING TO A CONTINUED SUBTLE COOLING TREND. WEDNESDAY AND
THURSDAY WILL SEE THE COOLEST TEMPERATURES OF THE WEEK. THERE IS A
75-100% CHANCE OF TEMPERATURES ACROSS THE INLAND EMPIRE, COACHELLA
VALLEY AND THE LARGE HIGH DESERT CITIES STAYING BELOW 90 DEGREES
THESE DAYS; PLENTIFUL 70S AND 80S EXPECTED FOR AREAS ALONG AND WEST
OF THE MOUNTAINS. LOW TEMPERATURES WILL ALSO BEGIN TO COOL OFF
THROUGH THE NEXT FEW NIGHTS AS WELL, WITH LOWS IN THE 50S AND 60S
ALONG AND WEST OF THE MOUNTAINS AND IN THE HIGH DESERT. INCREASED
SEA BREEZE WINDS WILL BE FELT ALONG THE DESERT SLOPES AND INTO THE
DESERTS EACH AFTERNOON AND EVENING THROUGH THURSDAY, SOME AREAS
GUSTING OVER 35 MPH IN THE PASSES AND HIGH DESERT.
THE LOW PRESSURE SYSTEM TO THE NORTH WILL MOVE OUT BY FRIDAY INTO
THE WEEKEND. MODELS BEGIN TO DIVERGE ON WHAT EXACT PRESSURE SYSTEMS
MOVE OVER THE AREA, BUT CONSENSUS CONTINUES TO SHIFT TOWARD WHATEVER
DOES FORM WILL BE WEAK IN NATURE. THIS WILL LEAD TO TEMPERATURES
STAYING NEAR AVERAGE FOR THE LATTER PART OF THE WEEK WITH WEAKER
WINDS ACROSS THE MOUNTAINS AND DESERTS.
AVIATION
141800Z...COAST/VALLEYS...SKC AND VFR THIS AFTERNOON, BUT LOW CLOUDS
BASED 1700-2100 FT MSL WILL MOVE BACK ASHORE STARTING 01-02Z TUE.
CLOUDS SPREAD INLAND OVERNIGHT, FILLING MOST OF THE COASTAL BASIN
BY 12Z. MINOR VIS REDUCTIONS (3-6SM) FOR ELEVATED INLAND VALLEYS
(KONT, KSBD, KL18). CLOUDS SCATTER BACK TOWARD THE COASTLINE
16-18Z.
MOUNTAINS/DESERTS...MOSTLY CLEAR AND VFR CONDITIONS THROUGH
TUESDAY MORNING.
MARINE
NO HAZARDOUS MARINE CONDITIONS ARE EXPECTED THROUGH SATURDAY MORNING.
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...APR
AVIATION/MARINE...KW
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