158
FXUS66 KLOX 081526
AFDLOX
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
826 AM PDT SUN MAR 8 2026
SYNOPSIS
07/1124 PM.
TODAY WILL BE VERY WARM AND DRY WITH GUSTY SANTA ANA WINDS.
BRIEFLY COOLER CONDITIONS ARE LIKELY EARLY NEXT WEEK, WITH ANOTHER
WARM AND DRY SPELL EXPECTED TO START ON WEDNESDAY AND CONTINUE
THROUGH AT LEAST FRIDAY.
SHORT TERM (TDY-TUE)
08/1219 AM.
A 551 DAM UPPER IS A COUPLE HUNDRED MILES SSW OF SAN DIEGO. IN
THIS LOCATION IT IS BRING EASTERLY UPPER LEVEL WINDS TO SRN CA.
THE SFC PRESSURE GRADIENT IS NORTHEASTERLY WITH 5 TO 6 MB OF
OFFSHORE FLOW FROM BOTH THE NORTH AND EAST. SINCE THE UPPER LEVEL
WINDS AND SFC GRADIENTS ARE NOT PERFECTLY ALIGNED THE SANTA ANA
WINDS THIS MORNING WILL NOT BE AS STRONG AS SATURDAY'S, BUT WILL
STILL REACH ADVISORY LEVELS (35 TO 45 MPH) IN MANY MTN/CST/VLY
LOCATIONS IN LA/VTA COUNTIES THROUGH EARLY AFTERNOON. THE WINDS
WILL BE A LITTLE MORE EASTERLY AND MAY AFFECT SOME AREAS THAT DO
NOT SEE STRONG WINDS IN A CLASSIC NE WIND EVENT. MAX TEMPS WILL
ACTUALLY BE THE MAIN TALKING POINT TODAY AS THE DOWNSLOPE WARMING
AND LACK OF SIGNIFICANT COOL AIR ADVECTION FROM THE INTERIOR WILL
BRING 6 TO 12 LOCALLY 15 DEGREES OF WARMING TO THE ENTIRE AREA
TODAY. THE CSTS/VLYS (EXCLUDING THE SANTA CLARITA VLY) OF LA
COUNTY WILL SEE MAX TEMPS IN THE UPPER 80S AND LOWER 90S TODAY.
WHILE THE CSTS/VLYS OF SLO/SBA COUNTIES WILL HAVE MAX TEMPS NEAR
80 DEGREES. VTA COUNTY'S HIGHS WILL MOSTLY BE IN THE MID 80S.
THESE MAX TEMPS ARE MOSTLY 15 TO 20 DEGREES ABOVE NORMAL.
A HEAT ADVISORY IS IN EFFECT FOR THE LA COUNTY COASTAL ZONES, THE
SAN FERNANDO VALLEY, SAN GABRIEL VALLEY, AND SANTA MONICA
MOUNTAINS. THE HEAT WILL AFFECT THE LA MARATHON AS WELL. PEOPLE
OUTSIDE NEED TO TALK PRECAUTIONS TO AVOID HEAT RELATED ILLNESS.
THE GREAT BASIN SFC HIGH WILL WEAKEN AND SHIFT TO THE EAST ON
MONDAY RESULTING IN A VERY QUICK REVERSAL FROM OFFSHORE TO ONSHORE
CONDITIONS. THIS QUICK A REVERSAL IS A CATALYST FOR MARINE LAYER
CLOUD FORMATION AND THIS ALONG WITH A WEAK EDDY WILL RESULT IN
SOME MORNING LOW CLOUDS IN THE LA COASTAL AREAS AND WESTERN SBA
COUNTY COAST. THE SWITCH TO ONSHORE FLOW WILL BRING DRAMATIC
COOLING TO THE CSTS AND VLYS WHERE MAX TEMPS WILL FALL 10 TO 15
DEGREES ACROSS SLO/SBA/VTA COUNTIES AND 15 TO 20 DEGREES ACROSS LA
COUNTY. EVEN WITH THIS COOLING MOST MAX TEMPS WILL END UP A FEW
DEGREES ABOVE NORMAL.
EVEN STRONGER ONSHORE FLOW ON TUESDAY WILL BRING MORE MORNING
MARINE LAYER CLOUDS AND A STRONGER SEABREEZE. THIS WILL COOL THE
AREA ANOTHER 2 TO 4 DEGREES AND BRING MAX TEMPS DOWN TO NEAR
NORMAL. IT WILL ALSO MAKE TUESDAY THE COOLEST DAY OF THE NEXT 7.
LONG TERM (WED-SAT)
08/157 AM.
AN E PAC RIDGE WILL NOSE IN FROM THE SW WEDNESDAY. HGTS WILL RISE
FROM 582 DAM WEDNESDAY MORNING TO 586 DAM THURSDAY AFTERNOON AND
THEN RECEDE SLIGHTLY TO 584 DAM ON FRIDAY. MODERATE OFFSHORE FLOW
WILL DEVELOP FROM THE NORTH, THE THE GRADIENTS IN THE W/E
DIRECTION WILL SHIFT FROM WEAK OFFSHORE IN THE MORNING TO WEAK
ONSHORE IN THE AFTERNOON. THIS PATTERN WILL BRING SOME NORTH WINDS
TO THE AREA PARTICULAR THE I-5 CORRIDOR AND THE SBA SOUTH COAST.
THE OFFSHORE FLOW ALONG WITH RISING HGTS SHOULD PREVENT ANY LOW
CLOUDS AND SKIES WILL BE MOSTLY CLEAR THROUGH THE PERIOD.
MAX TEMPS WILL BE THE MAIN TALKING POINT OF THE THREE DAY STRETCH.
LOOK FOR 5 TO 10 DEGREES OF WARMING (ACROSS THE CSTS/VLYS) BOTH
WED AND THU WITH LITTLE CHANGE SLATED FOR FRIDAY. THU/FRI'S MAX
TEMPS WILL BE IN THE MID AND UPPER 70S AT THE BEACHES, THE 80S
ACROSS THE REST OF THE CSTS, AND UPPER 80S TO LOWER 90S FOR THE
VLYS. THESE MAX TEMPS ARE 15 TO 20 DEGREES OVER NORMAL.
THE RIDGE WILL BREAK DOWN ON SATURDAY AND OFFSHORE FLOW FROM THE
NORTH WILL WEAKEN WHILE THE ONSHORE PUSH TO THE EAST WILL
INCREASE. LOOK FOR 3 TO 6 DEGREES OF COOLING WITH MAX TEMPS
REMAINING WELL ABOVE NORMAL.
BOTH AI-EC AND AI-GFS ARE DRY THROUGH THE 23RD OF THE MONTH.
AVIATION
08/0903Z.
AT 0900Z AT KLAX, THERE WAS NO MARINE LAYER OR AN INVERSION.
FOR 12Z TAFS, HIGH CONFIDENCE IN CAVU CONDITIONS FOR ALL SITES
THROUGH THIS EVENING. OVERNIGHT, THERE IS A 50-60% CHANCE OF
IFR/MVFR CIGS/VSBYS AT KLAX AND KLGB AFTER 10Z.
AS FOR WINDS, MODERATE CONFIDENCE IN WINDS FOR VENTURA AND LOS
ANGELES COUNTIES WITH TIMING OF WIND SHIFTS MAY BE OFF BY +/- 2
HOURS, AND GUSTS MAY BE OFF BY 10 KTS DURING PEAK WINDS.
LIGHT TO OCCASIONALLY MODERATE LLWS AND TURBULENCE IS LIKELY
OVER AND NEAR MOUNTAINOUS TERRAIN ACROSS LOS ANGELES AND VENTURA
COUNTIES THROUGH THIS AFTERNOON.
KLAX...HIGH CONFIDENCE IN CAVU CONDITIONS THROUGH THIS EVENING.
OVERNIGHT, THERE IS A 50% CHANCE THAT CIG/VSBY RESTRICTIONS DO NOT
DEVELOP. AFTER 10Z, THERE IS A 20-30% CHANCE OF EAST TO SOUTHEAST
WINDS AROUND 8 KNOTS.
KBUR...HIGH CONFIDENCE IN CAVU CONDITIONS THROUGH THE PERIOD.
MODERATE CONFIDENCE IN WIND FORECAST AS DIRECTION MAY BE OFF BY
20 DEGREES AND GUSTS MAY BE OFF BY +/- 10 KT DURING PEAK WINDS.
MARINE
08/825 AM.
FOR THE OUTER WATERS, MODERATE TO HIGH CONFIDENCE IN CURRENT
FORECAST. FOR TODAY, HIGH CONFIDENCE IN SMALL CRAFT ADVISORY
(SCA) LEVEL NE WINDS ACROSS PZZ676 WITH WINDS AND SEAS REMAINING
BELOW SCA LEVELS ACROSS PZZ670/673. ON MONDAY, THERE IS A 60-80%
CHANCE OF SCA LEVEL NORTHWEST WINDS ACROSS PZZ670/673. FOR TUESDAY
THROUGH THURSDAY, HIGH CONFIDENCE IN A COMBINATION OF SCA LEVEL
WINDS AND SEAS ACROSS PZZ670/673...AND A 30-50% CHANCE ACROSS
PZZ676.
FOR THE INNER WATERS NORTH OF POINT SAL, MODERATE TO HIGH
CONFIDENCE IN CURRENT FORECAST. TODAY THROUGH MONDAY, HIGH
CONFIDENCE IN WINDS AND SEAS REMAINING BELOW SCA LEVELS. FOR
TUESDAY THROUGH THURSDAY, THERE IS A 30-40% CHANCE OF SCA LEVEL
WINDS IN THE AFTERNOON AND EVENING HOURS.
FOR THE INNER WATERS SOUTH OF POINT CONCEPTION, HIGH CONFIDENCE
IN CURRENT FORECAST. THROUGH EARLY THIS AFTERNOON, SCA LEVEL
NORTHEAST WINDS ARE EXPECTED FROM VENTURA SOUTH TO SANTA MONICA
WITH WIND AND SEAS REMAINING BELOW SCA LEVELS ELSEWHERE. HOWEVER,
THERE IS A 20% CHANCE FOR WINDS TO GUST TO 20-25 KNOTS FROM SANTA
MONICA SOUTH TO EL SEGUNDO AND WEST ACROSS THE SANTA MONICA BAY
THROUGH EARLY THIS AFTERNOON. FOR TONIGHT THROUGH THURSDAY, WINDS
AND SEAS WILL REMAIN BELOW SCA LEVELS. ONE NOTE FOR TONIGHT AND
MONDAY MORNING, SOUTHEAST WINDS, GUSTING UP TO AROUND 15-20 KNOTS,
WILL BE POSSIBLE ACROSS THE BIGHT.
LOX WATCHES/WARNINGS/ADVISORIES
CA...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON
FOR ZONES 88-354-355-358-369>380. (SEE LAXNPWLOX).
HEAT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PDT THIS EVENING
FOR ZONES 362-366>370-372-373-548. (SEE LAXNPWLOX).
PZ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON
FOR ZONES 650-655-676. (SEE LAXMWWLOX).
PUBLIC...RORKE
AVIATION...RAT
MARINE...RAT/BL
SYNOPSIS...GOMBERG
WEATHER.GOV/LOSANGELES
EXPERIMENTAL GRAPHICAL HAZARDOUS WEATHER OUTLOOK AT:
HTTPS://WWW.WEATHER.GOV/ERH/GHWO?WFO=LOX
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