437
FXUS66 KLOX 270331
AFDLOX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
831 PM PDT FRI JUN 26 2026
SYNOPSIS
26/714 PM.
MARINE LAYER STRATUS WITH PATCHY FOG WILL REOCCUR EACH NIGHT FROM
THE COASTS TO THE COASTAL VALLEYS, EXPANDING OVER THE INTERIOR
VALLEYS THROUGH THE WEEKEND. TEMPERATURES WILL VERY GRADUALLY
COOL THROUGH MONDAY BEFORE STABILIZING. EXPECT BELOW NORMAL
TEMPERATURES THROUGH LATE NEXT WEEK, TRENDING TOWARD NORMAL BY
NEXT WEEKEND.
SHORT TERM (FRI-MON)
26/743 PM.
***UPDATE***
THE MAIN WEATHER CONCERN CONTINUES TO BE EXTENSIVE MARINE LAYER
CLOUDS DURING THE OVERNIGHT TO MORNING/EARLY AFTERNOON HOURS,
GUSTY WINDS AND COOLER THAN NORMAL TEMPERATURES. LAST NIGHT LOW
CLOUDS ADVANCED WELL INLAND OVER THE COASTS AND COASTAL VALLEYS,
AND INTO INTERIOR SAN LUIS OBISPO COUNTY, THE SANTA CLARITA VALLEY
AND UP THE LOWER COASTAL SLOPES. THIS IS EXPECTED TO RECUR TONIGHT
INTO SATURDAY. TODAY LA COUNTY CLEARED MORE SLOWLY THAN THE
VENTURA COAST AND VALLEYS, AND THE HREF LOW CLOUD COVER FORECAST
INDICATES THAT THIS IS LIKELY AGAIN ON WEDNESDAY. OVER PORTIONS OF
VENTURA COUNTY, CLEARING MAY BE DELAYED OR LIMITED TOMORROW. THIS
DEEP MARINE LAYER WITH EXTENSIVE LOW CLOUD COVER AND SLOW/LIMITED
CLEARING IS LIKELY TO PERSIST THROUGH EARLY NEXT WEEK.
AS FOR WINDS, THE WIND ADVISORIES FOR SW SANTA BARBARA COUNTY (NW
WINDS) AND THE ANTELOPE VALLEY AND FOOTHILLS (SW WINDS) ARE INCREASING
SLOWLY, WITH A CHANCE OF FALLING SHORT OF ADVISORY LEVELS (45
MPH). SATURDAY AFTERNOON AND NIGHT APPEAR MORE LIKELY TO REACH
ADVISORY LEVELS IN SW SBA COUNTY, WITH STRONGER SURFACE PRESSURE
GRADIENTS BETWEEN KSBA AND KSMX.
A PERSISTENT UPPER TROUGH OVER THE WEST COAST ALONG WITH CONTINUED
STRONG ONSHORE FLOW AND AN EXTENSIVE MARINE LAYER WILL RESULT IN A
COOLING TREND FOR THE AREA THROUGH SUNDAY. HIGHS ALONG THE COAST
WILL CHANGE LITTLE, BUT AWAY FROM THE COAST COOLING OF 2 TO 6
DEGREES IS EXPECTED ON SATURDAY, ESPECIALLY OVER THE FAR INTERIOR.
WEAKER COOLING OF 2 TO 3 DEGREES IS EXPECTED GOING INTO SUNDAY.
***FROM PREVIOUS DISCUSSION***
TROUGHING OVER CA WELL INTO NEXT WEEK WILL MEAN A FAIRLY STABLE
FORECAST BETWEEN NOW AND THEN. OFFSHORE FLOW AT THE SURFACE AND
DEEPENING OF THE MARINE LAYER WILL KEEP LOW STRATUS/FOG ALONG THE
COASTS AND COASTAL VALLEYS DURING THE EVENINGS AND MORNINGS/EARLY
AFTERNOONS WELL INTO NEXT WEEK.
THIS, ALONG WITH INCREASING CLOUDS, WILL RESULT IN BELOW NORMAL
TEMPERATURES AND GRADUAL COOLING THROUGH SUNDAY OR MONDAY.
DAYTIME TEMPERATURES WILL BEGIN TO STABILIZE AFTER THAT BUT
CONTINUE TO RUN BELOW CLIMATOLOGICAL NORMS. HIGHS WILL LARGELY RUN
IN THE 70S, WITH LOCATIONS FURTHER INLAND REACHING THE 80S, AND
COASTAL LOCATIONS GENERALLY WARMING INTO THE MID- TO UPPER-60S.
AS THE PRESSURE GRADIENT TIGHTENS, WINDS WILL BEGIN TO INCREASE
THIS EVENING, PEAKING ON SATURDAY. A WIND ADVISORY IS IN EFFECT
FOR THE ANTELOPE VALLEY AND WESTERN ANTELOPE FOOTHILLS THROUGH 5
AM PDT SUNDAY FOR GUSTS TO AROUND 50 MPH. THE NBM 24-HOUR MAX WIND
GUST FOR THESE TWO REGIONS FOR THE REST OF TODAY AND SATURDAY IS
UP TO 50 MPH WITH A MUCH BROADER AREA OF MAX GUSTS TO 40 MPH.
ADDITIONAL WIND ADVISORIES ARE IN EFFECT FOR THE SANTA BARBARA SW
COAST AND THE SANTA YNEZ WESTERN RANGE FOR SUNDOWNER WINDS 5 PM
PDT THIS EVENING THROUGH 3 AM PDT TOMORROW AND AGAIN SATURDAY
NIGHT INTO SUNDAY MORNING. OFFSHORE NORTHWEST WINDS WINDS WILL
REACH 30 MPH WITH GUSTS UP TO 50 MPH. THE SANTA BARBARA BEACHES
WILL EXPERIENCE BREEZY ONSHORE WINDS DURING THESE SAME TIMEFRAMES,
WITH GUSTS RANGING 25 TO 35 MPH.
A SECONDARY LOW WILL DROP INTO NORTHERN CA EARLY MONDAY AND
CONTINUE ROTATING SOUTHWARD BEFORE LIFTING NORTHEASTWARD INTO
NEVADA EARLY TUESDAY. MORE ON THAT BELOW.
LONG TERM (TUE-FRI)
26/1152 AM.
ANOTHER LOW DROPPING INTO NORTHERN CA EARLY MONDAY WILL CONTINUE
SOUTHWARD AND EVENTUALLY LIFT NORTHEASTWARD INTO NEVADA EARLY
TUESDAY. PERSISTENT TROUGHING OVER CA WILL MEAN A CONTINUATION OF
ONSHORE FLOW AND THE RESULTANT DAILY LOW STRATUS AND
FOG. STILL NOT FORECASTING ANY PRECIPITATION, ALTHOUGH SOME VERY
LIGHT MIST OR DRIZZLE FALLING OUT OF THE STRATUS DECK CANNOT BE
RULED OUT. TEMPERATURES WILL REMAIN VERY STABLE AND RUN UP TO 10
DEGREES BELOW CLIMATOLOGICAL NORMS THROUGHOUT NEXT WEEK BUT WILL
TREND TOWARD NORMAL HEADING INTO LATE NEXT WEEKEND. AT THIS POINT,
FLOW ALOFT WILL TURN ZONAL BEFORE AN AREA OF HIGH PRESSURE BUILDS
IN OVER THE SOUTHWEST DURING THE WEEKEND.
AVIATION
27/0111Z.
AT 1629Z AT KLAX, THE MARINE LAYER WAS 2600 FT DEEP. THE TOP OF
THE INVERSION WAS AT 3500 FEET WITH A TEMPERATURE OF 18 C.
HIGH CONFIDENCE IN VFR TAFS FOR DESERT AIRFIELDS (KPMD & KWJF).
MODERATE CONFIDENCE IN THE REMAINDER OF THE TAFS. TIMING OF
FLIGHT CAT CHANGES COULD BE OFF +/- 2 HOURS AND CIG HEIGHTS
+/- 300 FT.
KLAX...MODERATE CONFIDENCE IN TAF. ARRIVAL OF MVFR CIGS AROUND
012 EXPECTED TO ARRIVE AROUND 02Z. 15-25% CHANCE CIGS INITIALLY
ARRIVE IFR AROUND 008. SIMILAR TO PREVIOUS OVERNIGHT PERIODS, THE
LOW CLOUDS ARE EXPECTED TO GRADUALLY LIFT TOWARD 015 THEN 020 AND
025 AFTER DAWN. 25% CHANCE EAST WIND COMPONENT REACHES 7-8 KTS
12Z-16Z ON SATURDAY.
KBUR...MODERATE CONFIDENCE IN TAF. ARRIVAL OF IFR CIGS AROUND
008 SHOULD BE ACCURATE WITHIN +/- 2 HOURS OF CURRENT FORECAST.
CIGS SHOULD LIFT TO MVFR 010-015 AROUND 13Z. NO WIND ISSUES
EXPECTED.
MARINE
26/812 PM.
SMALL CRAFT ADVISORY (SCA) LEVEL WIND GUSTS HAVE EXPANDED TO THE
INNER WATERS FOCUSED ACROSS THE WESTERN AND SOUTHERN SANTA BARBARA
CHANNEL AND NORTH OF POINT SAL TODAY, PEAKING SATURDAY BEFORE
GRADUALLY DIMINISHING THROUGH MONDAY. LOCAL GUSTS MAY APPROACH 35
KT NEAR POINT CONCEPTION WITH A 30% CHANCE OF GALE CONDITIONS
ACROSS THE CENTRAL PART OF THE SANTA BARBARA CHANNEL SATURDAY
EVENING. THERE IS A 30-50% CHANCE OF SCA CONDITIONS EXPANDING
INTO THE SOUTHERN INNER WATERS ALONG AND SOUTH OF POINT
MUGU/MALIBU SATURDAY AFTERNOON TO EVENING.
SEAS WILL NEAR 8-10 FT SATURDAY EVENING THROUGH AT LEAST MONDAY
FOCUSED ACROSS THE OUTER WATERS. BEYOND, CONDITIONS LOOK TO QUIET
DOWN A BIT THROUGH MID NEXT WEEK.
LOX WATCHES/WARNINGS/ADVISORIES
CA...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT SATURDAY FOR
ZONES 349-351. (SEE LAXNPWLOX).
WIND ADVISORY IN EFFECT FROM 5 PM SATURDAY TO 3 AM PDT SUNDAY
FOR ZONES 349-351. (SEE LAXNPWLOX).
WIND ADVISORY REMAINS IN EFFECT UNTIL 5 AM PDT SUNDAY FOR
ZONES 381-383. (SEE LAXNPWLOX).
PZ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM PDT SUNDAY FOR ZONE
645. (SEE LAXMWWLOX).
SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM PDT SATURDAY FOR
ZONE 650. (SEE LAXMWWLOX).
SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM SATURDAY TO 3 AM
PDT SUNDAY FOR ZONE 650. (SEE LAXMWWLOX).
SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM PDT MONDAY FOR
ZONES 670-673-676. (SEE LAXMWWLOX).
PUBLIC...CROPP
AVIATION...BATZ/BLACK
MARINE...BATZ/MUNROE
SYNOPSIS...CROPP/CILIBERTI
WEATHER.GOV/LOSANGELES
EXPERIMENTAL GRAPHICAL HAZARDOUS WEATHER OUTLOOK AT:
HTTPS://WWW.WEATHER.GOV/ERH/GHWO?WFO=LOX
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