030
FXUS66 KLOX 250627
AFDLOX
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
1127 PM PDT TUE MAR 24 2026
SYNOPSIS
24/832 PM.
TEMPERATURES WILL REMAIN ABOVE NORMAL ACROSS ALL VALLEYS AND
INTERIOR LOCATIONS THROUGH THIS WEEKEND. PERSISTENT MARINE LAYER
WILL KEEP TEMPERATURES ON THE COOLER SIDE FOR COASTAL AREAS SOUTH
OF POINT CONCEPTION THROUGH AT LEAST THURSDAY. BY THE WEEKEND,
WEAK OFFSHORE FLOW WITH TEMPERATURES TEN TO TWENTY DEGREES ABOVE
NORMAL ARE EXPECTED.
SHORT TERM (TUE-FRI)
24/832 PM.
***UPDATE***
OVERALL, A QUIET EVENING ACROSS THE CWA. LATEST SATELLITE AND
SURFACE OBSERVATIONS INDICATE AREAS OF MARINE LAYER STRATUS SOUTH
OF POINT CONCEPTION. THE STRATUS IS EXPECTED TO EXPAND IN COVERAGE
AND MOVE INLAND ACROSS LA COUNTY LATER THIS EVENING. A SMALL ULL
WILL HELP LIFT THE MARINE ATMOSPHERIC BOUNDARY LAYER (MABL). THIS
SHOULD BE SUFFICIENT TO ALLOW THE MARINE LAYER TO FILTER INTO THE
SAN FERNANDO VALLEY LATE TONIGHT INTO TOMORROW MORNING. ADJUSTED
THE FORECAST TO MATCH THESE THOUGHTS. PATCHY DENSE FOG IS ALSO
POSSIBLE ALONG THE CENTRAL COAST MAINLY SOUTH OF MORRO BAY.
ANOTHER DAY OF DAILY RECORDS BROKEN (MAX TEMPERATURES):
PALMDALE AIRPORT 90 (BROKE OLD RECORD OF 86 SET IN 2022)
LANCASTER 91 (BROKE OLD RECORD OF 86 SET IN 1956)
SANDBERG 78 (BROKE OLD RECORD OF 76 SET IN 2014)
THE MARINE LAYER WILL KEEP COASTAL LOCATIONS NEAR NORMAL THROUGH
THURSDAY, WHILE THE INTERIOR WILL REMAIN WARM (15-20 DEGREES ABOVE
NORMAL).
THE ULL TO THE SOUTH WILL MOVE OVER EASTERN PORTIONS OF OUR CWA ON
WEDNESDAY. THIS WILL ACTUALLY PROVIDE MODEST UPPER LEVEL SUPPORT.
OVERLAPPING OF LOW TO MODERATE NORTHERLY FLOW WEDNESDAY NIGHT INTO
THURSDAY MORNING WILL BRING WINDS CLOSE TO ADVISORY LEVELS ALONG
THE I-5 CORRIDOR. 30% CHANCE OF WIND ADVISORIES BEING ISSUED.
***FROM PREVIOUS DISCUSSION***
HIGH PRESSURE ALOFT OVER THE EASTERN PACIFIC CONTINUES TO DIVERT
ALL INCOMING STORMS WELL TO THE NORTH. AT LOWER LEVELS THE PATTERN
IS MORE COMPLICATED. SOUTH OF PT CONCEPTION A PERSISTENT MARINE
LAYER AROUND 1500 FEET DEEP WILL CONTINUE AT LEAST ANOTHER DAY OR
TWO, KEEPING COASTAL AREAS ON THE COOLER SIDE. HOWEVER, BY
THURSDAY OR FRIDAY, PRESSURE GRADIENTS ARE EXPECTED TO SHIFT AT
LEAST SLIGHTLY OFFSHORE AND POSSIBLY AS MUCH AS 3-4MB, LEADING TO
SEVERAL DEGREES OF WARMING AND THE DEPARTURE OF THE MARINE LAYER.
STILL SOME UNCERTAINTY WITH TEMPERATURES THERE GIVEN THE SPREAD
IN GRADIENTS, BUT A MAJORITY OF THE ENSEMBLES SHOW A STRONG ENOUGH
OFFSHORE SIGNAL THAT SHOULD SUPPORT A RETURN OF 80S TO MOST
COASTAL AREAS. MEANWHILE, VALLEYS AND INTERIOR AREAS WILL
CONTINUE TO SEE TEMPS AT LEAST 15-20 DEGREES ABOVE NORMAL WITH A
ROUGHLY 5 DEGREE WARM UP BETWEEN WEDNESDAY AND FRIDAY. A RETURN
OF GUSTY NORTH TO NORTHEAST WINDS ACROSS THE MOUNTAINS FOR THE
LATTER HALF OF THE WEEK MAY REQUIRE A LOW END WIND ADVISORY OR
TWO, PARTICULARLY THURSDAY NIGHT.
ALONG THE CENTRAL COAST, OFFSHORE FLOW OFF THE SANTA LUCIAS
PEAKED MONDAY AND IS WEAKENING TODAY. TEMPERATURES ARE STILL WELL
ABOVE NORMAL INLAND BUT ALONG THE COAST A SIGNIFICANT COOLING
TREND HAS ALREADY BEGUN. EXPECTING ADDITIONAL COOLING THERE
WEDNESDAY WITH EVEN A 60-70% CHANCE OF SOME PATCHY DENSE FOG ALONG
THE COAST, MAINLY SOUTH OF MORRO BAY. HOWEVER, A RETURN OF LIGHT
TO MODERATE OFFSHORE FLOW IS EXPECTED AGAIN THURSDAY, BRINGING
80+ DEGREE TEMPS TO MANY AREAS AS WELL AS SOME NORTHEAST WINDS AT
TIMES. COOLER TEMPS LIKELY FRIDAY, THOUGH INLAND AREAS WILL STILL
BE WELL ABOVE NORMAL.
LONG TERM (SAT-TUE)
24/147 PM.
WELL ABOVE NORMAL TEMPERATURES ARE EXPECTED TO CONTINUE THROUGH
THE WEEKEND WITH LIGHT OFFSHORE FLOW AND 500MB HEIGHTS STILL ABOVE
THE 90TH PERCENTILE FOR THIS TIME OF YEAR. OVERALL, MOST AREAS IN
THE 80S AND 90S. NOT QUITE HOT ENOUGH FOR HEAT ADVISORIES BASED ON
THE FORECAST HIGH AND LOW TEMPS, BUT IF OFFSHORE FLOW IS STRONGER
THAN EXPECTED OR TEMPS ARE A FEW DEGREES WARMER THAN SOME HEAT
ADVISORIES MAY BE NEEDED.
A COOLING TREND WILL BEGIN MONDAY AS THE UPPER LEVEL PATTERN
SHIFTS TOWARDS TROUGHING OVER THE EASTERN PACIFIC. AND FINALLY A
CHANCE OF RAIN NEXT TUESDAY AND WEDNESDAY. ENSEMBLES HAVE BEEN
SLOWLY INCREASING RAIN AMOUNTS, IN LINE WITH WHAT THE AI MODELS
HAVE BEEN SUGGESTING. STILL LIKELY NOT A MAJOR STORM FOR SOUTHERN
CALIFORNIA, BUT PRETTY DECENT FOR APRIL. LATEST PROJECTIONS ARE
SHOWING AROUND AN INCH ALONG THE CENTRAL COAST AND A HALF INCH FOR
SOUTHERN AREAS.
***OF NOTE***
THIS HAS BE A PHENOMENALLY WARM MONTH. USING THE FORECASTED HIGH
TEMPERATURES FOR DTLA FOR TODAY (THE 24RD) TO THE 31ST ALONG WITH
THE MAX TEMPS THAT HAVE ALREADY OCCURRED, THE DTLA AVERAGE MAX
TEMP FOR THE MONTH WOULD BE 82.0 DEGREES. THIS WOULD HANDILY
ECLIPSE THE PREVIOUS RECORD HOLDERS:
79.1 DEGREES IN 2015
76.7 DEGREES IN 2017
76.0 DEGREES IN 1931
75.8 DEGREES IN 1934
75.7 DEGREES IN 1959
AVIATION
25/0627Z.
AT 0520Z AT KLAX, THE MARINE LAYER WAS 900 FEET DEEP. THE TOP OF
THE INVERSION WAS AT 3900 FEET WITH A TEMPERATURE OF 23 C.
HIGH CONFIDENCE TAFS FOR KPRB, KPMD, & KWJF.
LOW CONFIDENCE IN TAF FOR KSBP WITH A 40 PERCENT CHC OF
LIFR/VLIFR CONDS 12Z-17Z.
MODERATE CONFIDENCE IN REMAINING TAFS. TIMING OF CIG/VSBY
RESTRICTIONS MAY BE OFF +/- 2 HOURS. CIG HGT COULD BE OFF BY +/-
200 FT.
KLAX...MODERATE CONFIDENCE IN TAF. 010 CIGS MIGHT ARRIVE AS LATE
AS 16Z. SCT CONDS COULD ARRIVE AS LATE AS 1930Z. LOW CLOUDS COULD
RETURN AS EARLY AS 26/01Z. NO SIGNIFICANT EAST WIND COMPONENT IS
EXPECTED.
KBUR...MODERATE CONFIDENCE IN TAF. THERE IS A 30 PERCENT CHC OF
BKN006 CIGS. THERE IS A NO WIND IMPACTS EXPECTED.
MARINE
24/836 PM.
HIGH CONFIDENCE IN SMALL CRAFT ADVISORY (SCA) WINDS AND STEEP SEAS
EXPANDING THROUGH WEDNESDAY OVER OFFSHORE WATERS FROM THE CENTRAL
COAST DOWN TO SAN NICOLAS ISLAND. IT WILL REMAIN WINDY THROUGH
THURSDAY NIGHT AND WILL LIKELY WEAKEN QUICKLY AND SIGNIFICANTLY
ON FRIDAY. THE WINDS PEAK WEDNESDAY AFTERNOON THROUGH THURSDAY
MORNING, WHEN THERE IS A 40% CHANCE FOR LOW-END GALES.
THE NEARSHORE WATERS OF THE CENTRAL COAST WILL SEE SOME OF THOSE
WINDS AND SEAS, WITH A 60% CHANCE OF REACHING SCA DURING THE
PEAK.
HIGH CONFIDENCE IN THE REST OF THE WATERS BEING WITHOUT A SCA
THROUGH AT LEAST FRIDAY.
WHILE SOME FOG WILL REMAIN POSSIBLE, VISIBILITIES WILL LIKELY STAY
ABOVE 1 MILE.
LOX WATCHES/WARNINGS/ADVISORIES
CA...NONE.
PZ...SMALL CRAFT ADVISORY IN EFFECT FROM NOON WEDNESDAY TO 9 PM
PDT THURSDAY FOR ZONE 645. (SEE LAXMWWLOX).
SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM PDT THURSDAY FOR
ZONES 670-673. (SEE LAXMWWLOX).
SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM WEDNESDAY TO 9 PM
PDT THURSDAY FOR ZONE 676. (SEE LAXMWWLOX).
PUBLIC...MW/BLACK
AVIATION...RORKE
MARINE...RK
SYNOPSIS...BLACK
WEATHER.GOV/LOSANGELES
EXPERIMENTAL GRAPHICAL HAZARDOUS WEATHER OUTLOOK AT:
HTTPS://WWW.WEATHER.GOV/ERH/GHWO?WFO=LOX
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page