387
FXUS66 KLOX 210015
AFDLOX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
515 PM PDT FRI MAR 20 2026
SYNOPSIS
20/103 PM.
TEMPERATURES WILL REMAIN WELL ABOVE NORMAL THROUGH NEXT WEEK,
THOUGH SOME COOLING IS EXPECTED TODAY AND THROUGH THIS WEEKEND.
AREAS OF DENSE COASTAL FOG WILL BE POSSIBLE THROUGH THE WEEKEND AS
WELL. TEMPERATURES WILL TREND UPWARD AGAIN NEXT WEEK BUT ARE NOT
EXPECTED TO BE AS HOT AS THIS WEEK.
SHORT TERM (TDY-MON)
20/128 PM.
AFTERNOON TEMPERATURES REMAIN VERY CLOSE TO THE LAST COUPLE OF
DAYS, AS EXPECTED. THIS WILL BE THE LAST DAY OF RECORD
TEMPERATURES IN THIS CURRENT HEAT WAVE, THOUGH WE'RE NOT
COMPLETELY DONE WITH THE HOT WEATHER. TEMPS WILL BE COOLING
SEVERAL DEGREES THIS WEEKEND AS SLIGHTLY STRONGER ONSHORE FLOW
DEVELOPS, ENOUGH TO END THE 5 DAY STRING OF HEAT ADVISORIES AND
WARNINGS. HOWEVER, HIGHS WILL STILL BE 10-15 DEGREES ABOVE NORMAL
THIS WEEKEND AS HIGH PRESSURE STILL REMAINS QUITE STRONG. THE
ONSHORE TRENDS AND WEAKENING HIGH PRESSURE ALOFT WILL CREATE A
FAVORABLE ENVIRONMENT FOR A SHALLOW MARINE LAYER TO DEVELOP WITH A
HIGH POTENTIAL FOR DENSE FOG NEAR THE COAST DURING THE NIGHT AND
MORNING HOURS. THE "COOLEST" DAY WILL BE SATURDAY, THEN A SLOW
WARMING TREND WILL BEGIN AGAIN SUNDAY AND CARRY THROUGH NEXT WEEK.
BASED ON THE CURRENT FORECAST THERE'S AT LEAST A 50% CHANCE OF
NEEDING HEAT ADVISORIES FOR INLAND COASTAL AREAS AND VALLEYS AS
EARLY AS MONDAY.
LONG TERM (TUE-FRI)
20/147 PM.
A SECOND HEAT WAVE IS EXPECTED NEXT WEEK AS THE HIGH PRESSURE
RIDGE BUILDS AGAIN JUST OFF THE COAST OF SOUTHERN CALIFORNIA.
INCREASING NORTHERLY GRADIENTS WILL PROVIDE A TEMPERATURE BOOST AS
WELL STARTING MONDAY NIGHT. OVERALL THOUGH, HIGHS NEXT WEEK ARE
EXPECTED TO 3-5 DEGREES COOLER THAN THIS WEEK.
BETWEEN MONDAY AND WEDNESDAY TEMPERATURES ARE EXPECTED TO CLIMB
1-3 DEGREES EACH DAY, WITH WEDNESDAY AND THURSDAY LIKELY BEING THE
PEAK OF NEXT WEEK'S HEAT WAVE WITH HIGHS TOPPING OUT IN THE MID
90S IN THE VALLEYS AND MID TO UPPER 80S CLOSER TO THE COAST. THESE
TEMPERATURES WOULD QUALIFY FOR HEAT ADVISORIES ACROSS MOST
COAST/VALLEY AREAS STARTING AS SOON AS MONDAY, INCLUDING THE
CENTRAL COAST.
NO RAIN STILL THROUGH MAR 30. THERE ARE INCREASING SIGNS OF AT
LEAST SOME LIGHT RAIN AROUND THE BEGINNING OF APRIL, THOUGH MOST
SOLUTIONS INDICATE LESS THAN A QUARTER INCH IN MOST AREAS.
AVIATION
21/0015Z.
AT 0004Z AT KLAX, THE MARINE LAYER DEPTH WAS 400 FEET. THE TOP OF
THE INVERSION WAS 2800 FEET WITH A TEMPERATURE OF 29 DEGREES
CELSIUS.
FOR 00Z TAF PACKAGE, HIGH CONFIDENCE IN KPRB, KBUR. KVNY, KPMD
AND KWJF. FOR COASTAL SITES, HIGH CONFIDENCE IN FORECASTS THROUGH
THIS EVENING, BUT LOW CONFIDENCE TONIGHT IN DEVELOPMENT/TIMING OF
CIG/VSBY RESTRICTIONS. IF CIGS DEVELOP ALONG COASTAL SITES LATE
TONIGHT INTO SATURDAY MORNING, THERE IS A HIGH PROBABILITY OF
LIFR TO VLIFR VSBYS
KLAX...OVERALL, MODERATE CONFIDENCE IN 00Z TAF. THROUGH THIS
EVENING, HIGH CONFIDENCE IN CAVU CONDITIONS. FOR LATER TONIGHT
AND SATURDAY MORNING, MODERATE CONFIDENCE IN DEVELOPMENT OF
LIFR/VLIFR CONDITIONS, BUT LOW CONFIDENCE IN TIMING (COULD BE +/-
3 HOURS OF CURRENT FORECASTS). NO SIGNIFICANT EASTERLY WIND
COMPONENT IS EXPECTED.
KBUR...HIGH CONFIDENCE IN 00Z TAF AS CAVU CONDITIONS ARE EXPECTED
THROUGH THE PERIOD.
MARINE
20/1246 PM.
FOR THE OUTER WATERS, MODERATE TO HIGH CONFIDENCE IN CURRENT
FORECAST. THROUGH TONIGHT, HIGH CONFIDENCE IN WINDS AND SEAS
REMAINING BELOW SMALL CRAFT ADVISORY (SCA) LEVELS. FROM SATURDAY
THROUGH WEDNESDAY, HIGH CONFIDENCE IN A COMBINATION OF SCA LEVEL
WINDS AND SEAS. ADDITIONALLY, THERE IS A 20-30% CHANCE OF GALE
FORCE WINDS SATURDAY AFTERNOON THROUGH SUNDAY AND A 30-40% CHANCE
OF GALE FORCE WINDS WEDNESDAY.
FOR THE INNER WATERS NORTH OF POINT SAL, MODERATE TO HIGH
CONFIDENCE IN CURRENT FORECAST. THROUGH TONIGHT, HIGH CONFIDENCE
IN WINDS AND SEAS REMAINING BELOW SCA LEVELS. FROM SATURDAY
THROUGH WEDNESDAY, THERE IS A 50-70% CHANCE OF SCA LEVEL WINDS IN
THE AFTERNOON AND EVENING HOURS.
FOR THE INNER WATERS SOUTH OF POINT CONCEPTION, MODERATE TO HIGH
CONFIDENCE IN CURRENT FORECAST. FOR MOST OF THE SOUTHERN INNER
WATERS, HIGH CONFIDENCE IN WINDS AND SEAS REMAINING BELOW SCA
LEVELS THROUGH WEDNESDAY. THE ONLY EXCEPTION WILL BE THE WESTERN
HALF OF THE SANTA BARBARA CHANNEL WHERE THERE IS A 30-40% CHANCE
OF SCA LEVEL WINDS SUNDAY AFTERNOON AND SUNDAY NIGHT.
FOR TONIGHT AND INTO SATURDAY MORNING, AREAS OF DENSE FOG ARE
LIKELY ACROSS ALL OF THE COASTAL WATERS.
LOX WATCHES/WARNINGS/ADVISORIES
CA...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING
FOR ZONES
38-87-340-341-343-344-346>350-354-355-362-366-367-549-550. (SEE LAXNPWLOX).
HEAT ADVISORY IN EFFECT UNTIL 8 PM PDT THIS EVENING FOR ZONES
38-87-343-344. (SEE LAXNPWLOX).
EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT THIS EVENING
FOR ZONES 88-342-345-351>353-356>358-368>376-378>380-548. (SEE LAXNPWLOX).
PZ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM SATURDAY TO 3 AM PDT
SUNDAY FOR ZONE 645. (SEE LAXMWWLOX).
SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM SATURDAY TO 3 AM PDT
MONDAY FOR ZONES 670-673. (SEE LAXMWWLOX).
SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM SATURDAY TO 3 AM PDT
MONDAY FOR ZONE 676. (SEE LAXMWWLOX).
PUBLIC...MW
AVIATION...GOMBERG
MARINE...RAT
SYNOPSIS...MW
WEATHER.GOV/LOSANGELES
EXPERIMENTAL GRAPHICAL HAZARDOUS WEATHER OUTLOOK AT:
HTTPS://WWW.WEATHER.GOV/ERH/GHWO?WFO=LOX
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