170
FXUS66 KLOX 040941
AFDLOX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
241 AM PDT THU JUN 4 2026
SYNOPSIS
04/239 AM.
TEMPERATURES WILL BE SLIGHTLY ABOVE NORMAL INLAND AND NEAR NORMAL
ALONG THE COAST THROUGH FRIDAY, THEN DROPPING BELOW NORMAL OVER
THE WEEKEND AND INTO NEXT WEEK AS A LARGE LOW PRESSURE SYSTEM
DEVELOPS OVER THE WEST COAST. SKIES WILL BE MOSTLY CLEAR EXCEPT
FOR NIGHT AND MORNING LOW CLOUDS AND FOG ACROSS THE COAST AND
VALLEY AREAS.
SHORT TERM (TDY-SAT)
04/239 AM.
FAIRLY TYPICAL JUNE DAY ON TAP TODAY. A LITTLE RIDGE IS POKING IN
OVER SRN CA FROM THE WEST AND HGTS ARE NEAR 588 DAM. AT THE SFC
THE GRADIENTS WILL FOLLOW THE DIURNAL CURVE WITH THE E/W GRAD MDT
ONSHORE IN THE MORNING AND STRONGLY ONSHORE IN THE AFTERNOON. THE
N/S GRAD WILL BE WEAKLY ONSHORE IN THE AM AND MODERATELY ONSHORE
IN THE AFTERNOON. THE NORTH FLOW COMING OFF OF THE RIDGE IS
BRINGING NORTH WINDS TO THE MTNS AND LOCAL NE WINDS TO THE
CENTRAL COAST. AN EDDY WILL BRING LOW CLOUDS TO THE CSTS SOUTH AND
EAST OF KSBA, WHILE WESTERLY FLOW WILL BRING SOME LOW CLOUDS INTO
WESTERN SBA COUNTY. WHETHER OR NOT THE LOW CLOUDS WILL MAKE IT
INTO THE VLYS IS A STILL A QUESTION MARK GIVEN THE NORTH PUSH
ALOFT AND THE HIGH HGTS. IF LOW CLOUDS DO MAKE IT INTO THE VLYS
THEY WILL BE SHORT LIVED. IT WILL BE ANOTHER STORY FOR THE WEST
FACING BEACHES ACROSS VTA AND LA COUNTIES WHERE THE CLEARING WILL
BE SLOW OR NON EXISTENT. MAX TEMPS WILL BE SIMILAR TO YDY'S
READINGS WITH MAX TEMPS MOSTLY 3 TO 6 DEGREES ABOVE NORMAL
EVERYWHERE ACROSS THE CSTS AND VLYS SAVE FOR THE BEACHES. THE MTNS
AND FAR INTERIOR WILL AGAIN END UP 6 TO 12 DEGREES WARMER THAN
NORMAL.
THE RIDGE IS NOW FORECAST TO HOLD ITS OWN A LITTLE BETTER ON
FRIDAY. THE EDDY WILL REMAIN INTACT SO THE LOW CLOUD PATTERN WILL
HOLD. THE ONSHORE FLOW WILL REMAIN STRONG IN THE AFTERNOON AND
SOME BEACH MAY AGAIN NOT CLEAR. SLIGHTLY LOWER HGTS AND STRONGER
ONSHORE FLOW WILL LOWER MOST MAX TEMPS WILL FALL BY ABOUT 2
DEGREES. THE STRONG ONSHORE FLOW WILL BRING GUSTY AFTERNOON WINDS
TO THE ANTELOPE VLY.
CYCLONIC FLOW ARRIVE FRIDAY NIGHT AND SATURDAY AS A LARGE UPPER
LOW MOVES INTO WA STATE. THE CYCLONIC TURNING ALOFT, FALLING HGTS
AND STRONG ONSHORE FLOW WILL ALL COMBINE TO BRING A DEEP MARINE
LAYER WITH CLOUDS COVERING THE CSTS AND ALMOST ALL OF THE VLYS.
CLEARING TIMES WILL BE LATER THAN NORMAL AND MANY BEACHES WILL
STAY CLOUDY ALL DAY. THE COASTS WILL ONLY COOL A COUPLE OF
DEGREES, BUT THE VLYS WILL SEE 3 TO 6 DEGREES OF COOLING AND THE
FAR INTERIOR WILL COOL BY 4 TO 8 DEGREES.
LONG TERM (SUN-WED)
04/240 AM.
JUNE GLOOM WILL BE IN FULL SWING FROM SATURDAY INTO WEDNESDAY AND
LIKELY THROUGH THE END OF THE WEEK. A SERIES OF UPPER LOWS WILL
PARADE THROUGH THE PACNW AND WILL KEEP FAIRLY SHARP CYCLONIC
TURNING OVER SRN CA. THIS COUPLED WITH MDT TO STRONG ONSHORE FLOW
TO THE EAST WILL BRING DAY AFTER DAY OF EARLY ARRIVING AND LATE TO
LEAVE LOW CLOUDS TO THE AREA. THE BEACHES WILL BE IN DANGER OF
ZERO CLEARING EACH AFTERNOON. THERE MAY BE A SLIGHT REDUCTION IN
LOW CLOUDS TOWARDS THE END OF THE WEEK AS WEAK OFFSHORE FLOW DOES
DEVELOP FROM THE NORTH. THE AREA THAT WILL BE THE EXCEPTION TO THE
JUNE GLOOM RULE WILL BE THE SBA SOUTH COAST WHERE LOCAL OFFSHORE
FLOW FROM THE NORTH WILL MINIMIZES THE CLOUDS AND KEEP MAX TEMPS
RUNNING ABOVE NORMAL. MAX TEMPS WILL FALL BY UP TO 6 DEGREES ON
SUNDAY AND THEN WILL NOT CHANGE MUCH MONDAY THROUGH WEDNESDAY.
AVIATION
04/0941Z.
AT 0831Z AT KLAX, THE MARINE LAYER WAS 800 FEET DEEP. THE TOP OF
THE INVERSION WAS NEAR 3600 FEET WITH A TEMPERATURE OF 24 DEGREES
CELSIUS.
HIGH CONFIDENCE IN TAFS FOR KPRB, KWJF AND KPMD.
MODERATE CONFIDENCE IN TAF FOR KSBP WHERE THERE IS A 30 PERCENT
CHC OF LIFR CONDS 13Z-16Z.
MODERATE CONFIDENCE IN TAFS FOR KBUR AND KVNY WHERE THERE IS A 30
PERCENT CHC OF NO LOW CLOUDS.
MODERATE CONFIDENCE IN THE REMAINDER OF THE TAFS. VFR CONDS MAY
ARRIVE UP TO 2 HOURS LATER THAN FCST AND CIGS HGTS COULD BE OFF BY
+/- 200 FT.
KLAX...MODERATE CONFIDENCE IN TAF. THERE IS A 20 PERCENT CHC OF
CIGS REMAIN AOA 010. THERE IS A 30 PERCENT CHC OF SCT CONDS
21Z-01Z. NO SIGNIFICANT EASTERLY WIND COMPONENT IS EXPECTED.
KBUR...MODERATE CONFIDENCE IN TAF. THERE IS A 30% CHANCE THAT
THERE WILL BE NO LOW CLOUDS.
MARINE
04/239 AM.
FOR THE OUTER WATERS, MODERATE CONFIDENCE IN CURRENT FORECAST.
TODAY THROUGH MONDAY, HIGH CONFIDENCE IN COMBINATION OF SMALL
CRAFT ADVISORY (SCA) LEVEL WINDS AND SEAS WITH A 20-30% CHANCE OF
GALE FORCE WINDS AT TIMES (ESPECIALLY ACROSS PZZ670).
FOR THE INNER WATERS NORTH OF POINT SAL, MODERATE CONFIDENCE IN
CURRENT FORECAST. TODAY THROUGH MONDAY, THERE IS A 60-80% CHANCE
OF SCA LEVEL WINDS DURING THE AFTERNOON AND EVENING HOURS, WITH
SEAS APPROACHING SCA LEVELS AT TIMES.
FOR THE INNER WATERS SOUTH OF POINT CONCEPTION, MODERATE CONFIDENCE
IN CURRENT FORECAST. FOR A MAJORITY OF THE SOUTHERN INNER WATERS,
WINDS AND SEAS WILL REMAIN BELOW SCA LEVELS THROUGH MONDAY. THE
ONLY EXCEPTION WILL BE THE WESTERN HALF OF THE SANTA BARBARA
CHANNEL, WHERE THERE IS A 30-40% CHANCE OF SCA LEVEL WINDS ON
SATURDAY AND SUNDAY.
LOX WATCHES/WARNINGS/ADVISORIES
CA...WIND ADVISORY IN EFFECT UNTIL 5 AM PDT EARLY THIS MORNING FOR
ZONES 349-351-352-378-381. (SEE LAXNPWLOX).
PZ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM PDT THIS EVENING
FOR ZONES 645-670-673-676. (SEE LAXMWWLOX).
GALE WARNING IN EFFECT UNTIL 3 AM PDT EARLY THIS MORNING FOR
ZONES 670-673-676. (SEE LAXMWWLOX).
PUBLIC...RORKE
AVIATION...RORKE
MARINE...RAT/RS
SYNOPSIS...MW
WEATHER.GOV/LOSANGELES
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