621
FXUS66 KSGX 061907
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
1207 PM PDT SAT JUN 6 2026
SYNOPSIS
NOT AS HOT THIS WEEKEND WITH BREEZY CONDITIONS ACROSS THE
MOUNTAINS AND DESERTS. TEMPERATURES WILL HOLD NEAR AVERAGE FOR THE
FIRST HALF OF THE WEEK AS A TROUGHING PATTERN LINGERS WITH A
DEEPER MARINE LAYER. HIGH PRESSURE MOVES IN BY WEDNESDAY INTO THE
LATTER HALF OF NEXT WEEK, BRINGING A WARMING TREND.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
AN AREA OF LOW PRESSURE IS MOVING INTO WESTERN WASHINGTON STATE
TODAY, BRINGING AN OPEN WAVE TROUGHING PATTERN ALONG THE WEST
COAST. THIS CONTINUES TO BRING GREATER ONSHORE FLOW AND SUBTLE
COOLING TO THE REGION TODAY WITH HIGH TEMPERATURES A FEW DEGREES
COOLER THAN YESTERDAY. THE MARINE INVERSION IS STILL STRONG, WHERE
LOW CLOUDS WILL SEE INTERMITTENT CLEARING. BREEZY WEST AND SOUTH
WINDS WILL OCCUR OVER THE DESERT SLOPES/PASSES INTO THE DESERTS
THROUGH THIS EVENING. MODELS SHOW GUSTS PRIMARILY NEAR 25-40 MPH,
LOCALLY NEAR 55 MPH IN THE SAN GORGONIO PASS.
AS THE LOW PRESSURE SYSTEM IN THE PACIFIC NW MOVES INLAND, WE
WILL SEE A FEW MORE DEGREES OF COOLING FOR INLAND AREAS FOR SUNDAY
AND MONDAY AS REINFORCING SHORTWAVE MOVES THROUGH TO THE NORTH.
MOST AREAS WILL BE NEAR AVERAGE WITH SOME INLAND VALLEY LOCATIONS
NEAR 5 DEGREES BELOW NORMAL AS LOW CLOUDS MOVE INTO THE COASTAL
AND WESTERN VALLEY AREAS EACH NIGHT AND MORNING. HIGHS IN THE 70S
AND 80S WILL OCCUR ACROSS MOST AREAS WITH HIGHS 95-100 DEGREES
ACROSS THE LOWER DESERTS.
BY WEDNESDAY, THE TROUGHING PATTERN TO THE NORTH WILL SHIFT
FURTHER INLAND AS A RIDGE OF HIGH PRESSURE AMPLIFIES OFF THE
COAST. THIS WILL BRING WARMER WEATHER ON WEDNESDAY, WITH SIMILAR
TEMPERATURES EXPECTED FOR THE REST OF THE WEEK AS THE SYSTEM
REMAINS OFF THE COAST. WE WILL CONTINUE TO MONITOR HOW WARM WE
BECOME, BUT SO FAR, NBM PREDICTIONS HAS HIGH TEMPERATURES AROUND 5
TO LOCALLY 10 DEGREES ABOVE NORMAL FOR THIS TIME PERIOD.
AVIATION
061800Z...COAST/VALLEYS...LOW CLOUDS 1800-2200 FT MSL ARE LINGERING
ALONG THE IMMEDIATE COAST THIS MORNING. SCATTERING POSSIBLE 19-23Z
TODAY FOR COASTAL SITES, HIGHER CHANCES FOR NORTH SD COUNTY/ORANGE
COUNTY. SCATTER OUT FOR SOUTH SD COUNTY LIKELY TO BE INTERMITTENT
AND BRIEF, WITH SUSTAINED BKN CIGS FOR MOST OF THE DAY. CLOUDS MOVE
BACK INLAND AFTER 23Z THIS AFTERNOON, REACHING INTO PARTS OF THE
INLAND VALLEYS SIMILAR TO THIS MORNING OVERNIGHT, WITH SIMILAR BASES
1800-2300 FT MSL.
MOUNTAINS/DESERTS...VFR WITH CLOUDS AOA 20000FT MSL THROUGH THIS
EVENING. SOUTHWEST-WEST WINDS WILL INCREASE IN THE MOUNTAINS AND
DESERTS TODAY WITH GUSTS REACHING 30-40 KNOTS AFTER 19Z. WINDS
SLOWLY DECREASE LATE THIS EVENING AND OVERNIGHT. MOD UP/DOWNDRAFTS
AND POCKETS OF LLWS IN LEE (NORTH AND EAST) OF MOUNTAINS.
MARINE
NO HAZARDOUS MARINE CONDITIONS ARE EXPECTED THROUGH WEDNESDAY NIGHT.
BEACHES
A SERIES OF LONG PERIOD (17-19 SECOND) SWELLS FROM THE SOUTH (200
DEGREES) WILL RESULT IN ELEVATED SURF THIS WEEKEND. SURF 4-6 FEET AT
SOUTH FACING BEACHES REMAINS THROUGH THIS EVENING, BEFORE SWELL AND
SURF DIMINISHES SLIGHTLY ON SUNDAY. SURF BUILDS AGAIN MONDAY AS A
FRESH 3-4 FOOT SWELL AT 18-19 SECONDS MOVES INTO THE REGION. SURF
PEAKS TUES-WED WITH SETS TO 5-8 FEET LIKELY AT SOUTH-FACING BEACHES,
THEN GRADUALLY DIMINISHES LATE NEXT WEEK.
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...CSP
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