646
FXUS66 KLOX 251758
AFDLOX
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
1058 AM PDT THU JUN 25 2026
UPDATED AVIATION SECTION
SYNOPSIS
25/212 AM.
MARINE LAYER CLOUDS WITH PATCHY FOG WILL REOCCUR EACH NIGHT FROM
THE COASTS TO THE COASTAL VALLEYS, EXPANDING INTO THE VALLEYS
INTO THIS WEEKEND. TEMPERATURES WILL TREND COOLER, WITH BELOW
NORMAL TEMPERATURES THROUGH THE WEEKEND.
SHORT TERM (TDY-SAT)
25/821 AM.
***UPDATE***
MORNING SATELLITE IMAGERY SHOWS MARINE STRATUS LAYER SOLIDLY IN
PLACE THIS MORNING WITH OBSERVATIONS INDICATING THE TOP OF IT
SITTING AROUND 2K FT CURRENTLY. HIGH RESOLUTION MODELS SHOW IT
RECEDING BY AROUND NOON PDT AND FILLING BACK INTO COASTAL VALLEYS
BEGINNING AROUND 6 PM PDT.
ONSHORE FLOW IN QUASI-ZONAL FLOW ALOFT WILL RESULT IN DEEPENING
OF THE MARINE LAYER OVER THE NEXT SEVERAL DAYS WHICH WILL CONTINUE
TO LIMIT DAYTIME HEATING DURING THE EARLY AFTERNOONS. HIGH
TEMPERATURES TODAY ARE EXPECTED TO WARM TO WITHIN A FEW DEGREES OF
YESTERDAY'S MAX TEMPS.
MID- TO HIGH- LEVEL CLOUDS WILL BEGIN TO DESCEND THROUGH CA EARLY
FRIDAY MORNING AS PRESSURE HEIGHTS CONTINUE TO FALL DUE TO THE
DEEPENING PACNW LOW PRESSURE SYSTEM. INCREASING CLOUD COVER WILL
FURTHER LIMIT DAYTIME WARMING THROUGHOUT THE WEEK WITH TODAY
MARKING THE BEGINNING OF A COOLING TREND THROUGH EARLY NEXT WEEK.
WINDS WILL REMAIN LIGHT TODAY BUT WILL GRADUALLY TURN MORE
NORTHERLY AND INCREASE BEGINNING FRIDAY EVENING AS THE PRESSURE
GRADIENT TIGHTENS.
***FROM PREVIOUS DISCUSSION***
THE FLOW OVERHEAD WILL BECOME MORE AND MORE CYCLONIC AS A VERY
LARGE UPPER LOW WORKS ITS WAY INTO AND THRU THE PACNW. HGTS WILL
FALL FROM 590 DAM TO 584 DAM BY SATURDAY AFTERNOON. MODERATE TO
STRONG ONSHORE FLOW WILL BE PRESENT FOR ALL THREE DAY AS WELL. THE
ONSHORE FLOW WILL BE STRONGEST (8-9 MB) TO THE EAST AND IN THE
AFTERNOONS.
LOOK FOR THREE SIMILAR DAYS TODAY THROUGH SATURDAY. THERE WILL BE
PLENTY OF LOW CLOUDS AND FOG COVERING ALMOST ALL OF THE CSTS AND
MUCH OF THE VLYS. CLEARING WILL BE SLOWER THAN NORMAL AND A FEW
BEACHES WILL SEE NO CLEARING AT ALL. THE LOW CLOUDS WILL ALSO
ARRIVE EARLIER THAN NORMAL AS WELL. THE ONLY EXCEPTION WILL BE THE
WESTERN PORTION OF THE SBA SOUTH CST WHERE LOCAL NORTH WINDS WILL
LIKELY KEEP THE REGION CLOUD FREE.
MAX TEMPS WILL FALL 1 TO 2 LOCALLY 3 TO 4 DEGREES PER DAY ACROSS
MOST OF THE AREA. BY SATURDAY EVEN THE VLYS WILL BE IN THE 70S.
THESE MAX TEMPS WILL BE 3 TO 6 DEGREES BLO NORMAL ACROSS THE CSTS
AND 6 TO 12 DEGREES ACROSS THE VLYS.
THERE WILL BE GUSTY WEST WINDS ACROSS THE ANTELOPE VLY IN THE
AFTERNOONS WITH PEAK GUSTS APPROACHING ADVISORY LEVELS. THERE WILL
ALSO BE GUSTY NW WINDS ACROSS THE SW PORTION OF SBA COUNTY IN THE
EVENINGS AND OVERNIGHT. THESE GUSTS WILL LIKELY REACH ADVISORY
LEVELS FRIDAY EVENING.
LONG TERM (SUN-WED)
25/237 AM.
JUNE GLOOM WILL CONTINUE UNABATED THROUGH AT LEAST THE 1ST OF
JULY. A SERIES OF UPPER LOWS WILL ROTATE THROUGH THE PACNW AND
KEEP CYCLONIC FLOW OVER THE STATE. STRONG ONSHORE FLOW TO THE EAST
WILL CONTINUE THROUGH THE PERIOD. THERE WILL BE MODERATE ONSHORE
FLOW TO THE N IN THE AFTERNOON, BUT ONLY WEAK ONSHORE FLOW IN THE
MORNINGS.
NIGHT THROUGH MORNING LOW CLOUDS AND FOG WILL CONTINUE THROUGH THE
PERIOD PUSHING OVER THE CSTS AND DEEP INTO THE VLYS. CLEARING WILL
BE ON THE SLOW SIDE WITH SOME WEST FACING BEACHES NOT CLEARING AT
ALL.
STRONG NEAR ADVISORY WEST WIND GUSTS WILL AFFECT THE ANTELOPE VLY
EACH AFTERNOON DUE TO THE STRONG ONSHORE PUSH. NW WINDS WILL
LIKELY CONTINUE TO AFFECT THE SW CORNER OF SBA COUNTY IN THE
EVENINGS.
MAX TEMPS WILL NOT CHANGE MUCH THROUGH THE PERIOD. LOOKS FOR MID
AND UPPER 60S AT THE BEACHES; LOWER TO MID 70S ACROSS THE REST OF
THE CSTS AND MID AND UPPER 70S ACROSS THE VLYS. THESE TEMPS ARE 3
TO 6 DEGREES UNDER NORMAL FOR THE CSTS AND 6 TO 12 DEGREES COOLER
THAN NORMAL FOR THE VLYS.
AVIATION
25/1757Z.
AT 1715Z AT KLAX, THE MARINE LAYER WAS 2200 FT DEEP. THE TOP OF
THE INVERSION WAS AT 3900 FEET WITH A TEMPERATURE OF 19 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 +/- 3 HOURS AND CIG HEIGHTS
+/- 300 FT.
KLAX...MODERATE CONFIDENCE IN TAF. THERE IS A 15% CHANCE THAT
CIGS DO NOT CLEAR, AND A 30% CHANCE OF INTERMITTENT CIGS FROM
25/21Z THROUGH 26/01Z. GENERALLY EXPECTING MVFR CIGS 010-018,
BUT LIKELY CIGS FALL TO AROUND IFR 008 FROM 26/05Z-10Z.
NO SIGNIFICANT EAST WIND COMPONENT EXPECTED.
KBUR...MODERATE CONFIDENCE IN TAF. ARRIVAL OF IFR CIGS SHOULD
BE ACCURATE WITHIN +/- 2 HOURS OF CURRENT FORECAST.
NO WIND ISSUES EXPECTED.
MARINE
25/705 AM.
NW WINDS WILL INCREASE TO SMALL CRAFT ADVISORY (SCA) LEVELS
THURSDAY EVENING ACROSS THE NORTHERN WATERS AND WILL EXPAND TO
THE SOUTH FRIDAY INTO THE WEEKEND. SCA WINDS WILL BE STRONGEST
ON SATURDAY, AND WILL REACH INTO THE NEARSHORE WATERS ALONG THE
CENTRAL COAST AND SANTA BARBARA CHANNEL AT TIMES. SEAS WILL NEAR
10 FT SATURDAY EVENING THROUGH MONDAY MORNING. BEYOND, CONDITIONS
LOOK TO QUIET DOWN A BIT THROUGH MID NEXT WEEK.
LOX WATCHES/WARNINGS/ADVISORIES
CA...NONE.
PZ...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 9 AM
PDT MONDAY FOR ZONE 670. (SEE LAXMWWLOX).
SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO 9 AM
PDT MONDAY FOR ZONE 673. (SEE LAXMWWLOX).
SMALL CRAFT ADVISORY IN EFFECT FROM 3 AM FRIDAY TO 9 AM PDT
MONDAY FOR ZONE 676. (SEE LAXMWWLOX).
PUBLIC...CROPP/RORKE
AVIATION...BLACK
MARINE...BLACK
SYNOPSIS...PHILLIPS
WEATHER.GOV/LOSANGELES
EXPERIMENTAL GRAPHICAL HAZARDOUS WEATHER OUTLOOK AT:
HTTPS://WWW.WEATHER.GOV/ERH/GHWO?WFO=LOX
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