764
FXUS66 KLOX 150613
AFDLOX
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
1113 PM PDT TUE JUL 14 2026
SYNOPSIS
14/529 PM.
A WARMING TREND WILL CONTINUE THROUGH WEDNESDAY, WITH DANGEROUS
HEAT EXPECTED FOR MANY AREAS THROUGH THURSDAY. GUSTY NORTHWEST TO
NORTH WINDS ARE FORECAST FOR SOUTHERN SANTA BARBARA COUNTY AND
THE LA AND VENTURA INTERIOR MOUNTAINS DURING THE AFTERNOON AND
OVERNIGHT HOURS THROUGH WEDNESDAY. COOLER WEATHER WILL BEGIN TO
ARRIVE ON THURSDAY.
SHORT TERM (TUE-FRI)
14/815 PM.
***UPDATE***
IT WAS YET ANOTHER HUMID AND HOT DAY TODAY. THE SKIES WERE MOSTLY
CLEAR COMPARED TO YESTERDAY, WITH AFTERNOON CUMULUS CLOUDS OVER
THE MOUNTAINS. TEMPERATURES TODAY WERE IN THE 70S AT THE BEACHES,
WITH 80 TO 90S AWAY FROM THE COAST, AND LOW 100S IN THE WARMEST
VALLEYS - AT LEAST WIDESPREAD 5 TO 10 DEGREES ABOVE NORMAL (AND
SOME EVEN HIGHER) FOR THIS TIME OF YEAR. HOWEVER, NO HIGH
TEMPERATURE RECORDS WERE BROKEN TODAY. OVERNIGHT LOW TEMPERATURES
WILL REMAIN WARM, WITH HIGH 60S TO LOW 70S AWAY FROM THE COAST,
PROVIDING LITTLE RELIEF FROM THE HEAT AND ADDING TO THE HEAT
STRESS (ALONG WITH THE HIGHER HUMIDITIES FROM THE SOUTHERLY
FLOW). HIGH TEMPERATURES WILL PEAK TOMORROW, WITH TEMPERATURES IN
THE 80S ACROSS THE BEACHES, 90S AWAY FROM THE COASTS, AND AS HIGH
AS 110 ACROSS THE INTERIOR.
PLEASE TAKE EXTRA PRECAUTION WITH THE HEAT, STAY IN AIR CONDITIONED
AREAS (INCLUDING COOLING CENTERS), DRINK PLENTY OF HYDRATING
FLUIDS, AND PLEASE DO NOT LEAVE ANYONE IN CARS WITHOUT
AIR CONDITIONING FOR ANY LENGTH OF TIME. KNOW THE SIGNS OF HEAT
STRESS AND HEAT EXHAUSTION.
AS FOR WINDS, LOCAL ADVISORY LEVEL NW TO N WIND GUSTS WILL AFFECT
THE SOUTHERN SANTA BARBARA COAST TONIGHT (SUNDOWNERS), AND
WIDESPREAD NW TO N WINDS WILL INCREASE TOMORROW. ADVISORIES WILL
LIKELY BE NEEDED FOR THE SANTA BARBARA SOUTH COAST DURING THE
EVENING AND OVERNIGHT HOURS, AND MAY BE NEEDED FOR THE I-5
CORRIDOR AND WESTERN ANTELOPE VALLEY.
FORECAST WAS IN SHAPE AND NO UPDATES WERE NEEDED.
***FROM PREVIOUS DISCUSSION***
CONVECTION OVER THE MOUNTAINS IS STARTING TO LOOK INTERESTING,
PARTICULARLY OVER THE NORTHERN VENTURA MOUNTAINS AND NEAR
WRIGHTWOOD. HI RES FORECAST MODELS INDICATE SLIGHTLY HIGHER
CHANCES FOR A STORM OR TWO IN THE VENTURA MOUNTAINS NEAR THE
BORDER WITH KERN COUNTY VERSUS THE WRIGHTWOOD AREA.
OTHERWISE, TEMPERATURE TRENDS TODAY HAVE BEEN A MIXED BAG WITH
INLAND AREAS TRENDING WARMER (IN SOME CASES 10-15 DEGREES WARMER)
BUT COASTAL AREAS EITHER LITTLE CHANGE OR COOLER DUE TO AN
UNEXPECTED INCREASE IN ONSHORE FLOW.
THE FORECAST FOR WEDNESDAY AND BEYOND REMAINS LARGELY UNCHANGED.
WEDNESDAY WILL BE THE WARMEST DAY OF THE WEEK AND POSSIBLY THE
SUMMER SO FAR. PW'S ARE SLOWLY DECREASING BUT HUMIDITIES WILL
STILL BE ABOVE NORMAL AND ADDING TO THE ALREADY HIGH HEAT STRESS.
RECORDS ARE VERY HIGH TOMORROW AND PROBABLY OUT OF REACH IN MOST
AREAS BUT SOME ISOLATED RECORDS ARE POSSIBLE. OVERALL, HIGHS
WEDNESDAY WILL BE 10-17 DEGREES ABOVE NORMAL, RANGING FROM 105-110
ACROSS THE FAR INTERIOR AREAS, INCLUDING PASO ROBLES AND WOODLAND
HILLS, LOW TO MID 90S DOWNTOWN, AND LOW 80S AT THE BEACHES. THIS
IS BASED ON A FORECAST OF LIGHT OFFSHORE FLOW TOMORROW AROUND 2MB
WHICH WOULD DELAY THE COOLING SEA BREEZE. IF GRADIENTS REMAIN
ONSHORE HIGHS LIKELY WOULD BE AT LEAST A FEW DEGREES COOLER.
2-5 DEGREES OF COOLING ARE EXPECTED THURSDAY AND AN ADDITIONAL
4-8 DEGREES OF COOLING ON FRIDAY BRINGING TEMPERATURES BACK TO
WITHIN A FEW DEGREES OF NORMAL IN MOST AREAS. PW'S CONTINUE TO
FALL BUT STILL REMAIN ABOVE NORMAL SO STILL MORE HUMIDITY THAN
USUAL BUT CHANCES FOR MOUNTAIN STORMS WILL BE 10% OR LESS AFTER
TODAY.
LONG TERM (SAT-TUE)
14/217 PM.
VERY LITTLE CHANGE IN THE PATTERN AFTER FRIDAY AND THROUGH THE
MIDDLE OF NEXT WEEK WITH DAYTIME HIGHS WITHIN A FEW DEGREES OF
NORMAL. DAY TO DAY TEMPERATURE TRENDS WILL MOSTLY BE 3 DEGREES OR
LESS EITHER WAY AND GENERALLY TIED TO THE PRESSURE GRADIENT
TRENDS. THERE IS ANOTHER LITTLE SURGE OF TROPICAL MOISTURE THIS
WEEKEND AS A DECAYING TROPICAL STORM MOVES UP THE COAST. THIS
COULD TRIGGER ANOTHER CHANCE OF ISOLATED MOUNTAIN CONVECTIVE INTO
EARLY NEXT WEEK, AND PW'S INCREASE BACK UP TO AROUND 1.5", SO AT
THE VERY LEAST HUMIDITIES WILL REMAIN ABOVE NORMAL MAKING IT FEEL
HOTTER THAN IT ACTUALLY IS.
AVIATION
15/0611Z.
AT 0528Z AT KLAX, THE MARINE LAYER WAS 700 FT DEEP. THE TOP OF
THE INVERSION WAS AT 2900 FT WITH A MAX TEMPERATURE OF 29 C.
MODERATE TO HIGH CONFIDENCE IN VFR TAFS AT ALL SITES, HIGHEST
CONFIDENCE AWAY FROM COASTS. THERE IS A 30% CHANCE FOR LIFR TO
IFR CIGS AT KLAX/KSMO/KLGB/KSMX AFTER 10Z .
KLAX...MODERATE CONFIDENCE IN TAF. THERE IS A 30 PERCENT CHC OF
BKN004-007 CIGS AFTER 12Z-17Z TUE. NO SIGNIFICANT EAST WIND
COMPONENT EXPECTED.
KBUR...HIGH CONFIDENCE IN TAF
MARINE
14/708 PM.
NORTHWEST WINDS WILL INCREASE THIS AFTERNOON TO SMALL CRAFT
ADVISORY (SCA) LEVELS ACROSS THE OUTER WATERS AND WILL CONTINUE
THROUGH THURSDAY NIGHT. THERE IS ALSO 40% CHANCE OF GALES LATER
WEDNESDAY INTO THURSDAY, BUT CONFIDENCE IS NOT HIGH ENOUGH TO
WARRANT A GALE WATCH AT THIS POINT. THIS DETERMINATION (GALE
WARNING OR NOT) WILL LIKELY OCCUR WITH WEDNESDAY MORNING'S
FORECAST PACKAGE. SEAS ARE FORECAST TO BUILD TO NEAR 10 FEET IN
CONJUNCTION WITH THESE WINDS. THE ELEVATED WINDS AND SEAS WILL
EXTEND INTO THE WESTERN SANTA BARBARA CHANNEL AND NEARSHORE WATERS
ALONG THE CENTRAL COAST EACH AFTERNOON AND EVENING THROUGH
THURSDAY NIGHT.
WINDS ARE EXPECTED TO IMPROVE FRIDAY THROUGH THE WEEKEND WHILE THE
NORTHWEST SWELL LOWERS. HOWEVER, SHORT PERIOD CHOPPY SEAS FROM A
SOUTHERLY SWELL ASSOCIATED WITH A TROPICAL SYSTEM TO OUR SOUTH
AND WEST WILL IMPACT OUR WATERS THIS WEEKEND.
BEACHES
14/201 PM.
HAZARDOUS RIP CURRENTS AND BREAKING WAVES WITH ELEVATED SURF ARE
EXPECTED FOR COASTAL AREAS AND THE BEACHES OF LOS ANGELES,
VENTURA, SANTA BARBARA, AND SAN LUIS OBISPO COUNTIES, AS ENHANCED
SOUTHERLY SWELL CONTINUES. MINOR COASTAL FLOODING WILL BE POSSIBLE
DURING THE EVENINGS, GIVEN ABNORMALLY HIGH TIDES OF 7.0 TO 7.6
FEET. A BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE
WEDNESDAY EVENING, WITH A CHANCE IT WILL BE EXTENDED THROUGH
THURSDAY EVENING.
FOR THIS WEEKEND, DISTANT STORMS OVER THE EAST PACIFIC WATERS
WELL SOUTH OF THE AREA COULD PRODUCE INCREASING SOUTHERLY SWELL
RESULTING IN EVEN MORE SIGNIFICANT BEACH HAZARDS.
LOX WATCHES/WARNINGS/ADVISORIES
CA...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT THURSDAY FOR
ZONES 38-88-349>353-356>358-368>375-378>383-548. (SEE LAXNPWLOX).
HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY FOR
ZONES
87-341>345-347-348-354-355-362-366-367-376-377-549-550. (SEE LAXNPWLOX).
BEACH HAZARDS STATEMENT IN EFFECT THROUGH LATE WEDNESDAY
NIGHT FOR ZONES 340-346-349-350-354-362-366. (SEE LAXCFWLOX).
RED FLAG WARNING IN EFFECT FROM NOON WEDNESDAY TO 9 AM PDT
THURSDAY FOR ZONES 349>353-376>378. (SEE LAXRFWLOX).
PZ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM PDT WEDNESDAY FOR
ZONE 650. (SEE LAXMWWLOX).
SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM PDT FRIDAY FOR
ZONES 670-673-676. (SEE LAXMWWLOX).
PUBLIC...MW/KL
AVIATION...RORKE
MARINE...LEWIS/DB
BEACHES...LEWIS
SYNOPSIS...MW/COHEN/CC
WEATHER.GOV/LOSANGELES
EXPERIMENTAL GRAPHICAL HAZARDOUS WEATHER OUTLOOK AT:
HTTPS://WWW.WEATHER.GOV/ERH/GHWO?WFO=LOX
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