Area Forecast Discussion
Issued by NWS Los Angeles, CA

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FXUS66 KLOX 052353
AFDLOX

SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
345 PM PST THU MAR 5 2015

...UPDATED AVIATION DISCUSSION...

.SYNOPSIS...

A LARGE HIGH WILL PERSIST INTO EARLY NEXT WEEK WITH FAIR SKIES AND
ABOVE NORMAL TEMPERATURES...TO PEAK OVER THE WEEKEND. ONSHORE FLOW
WILL RETURN BY LATE MONDAY FOR A COOLING TREND AND MARINE LAYER AT
THE COAST. A LOW SYSTEM WILL APPROACH BY MIDWEEK FOR AN INCREASE IN
CLOUDINESS AND COOLER TEMPERATURES.

&&

.SHORT TERM (TODAY-SUN)...QUIET WEATHER PATTERN THROUGH THE WEEKEND
AS HIGH PRESSURE BUILDS OVER THE STATE AND WEAK OFFSHORE FLOW
CONTINUES. ONLY FEATURE OF INTEREST REALLY WILL BE THE WELL ABOVE
NORMAL TEMPS WITH HIGHS 10-15 DEGREES ABOVE NORMAL. HIGHS EXPECTED
TO PEAK SATURDAY FOR COAST/VALLEY AREAS AS WEAK ONSHORE FLOW RETURNS
SUNDAY AND COOLS THINGS OFF A FEW DEGREES BUT STILL AT LEAST 5
DEGREES ABOVE NORMAL. MTNS AND ANTELOPE VALLEY WILL CONTINUE TO WARM
THROUGH SUNDAY.

.LONG TERM (MON-THU)...THE LITTLE INSIDE TROF THAT BRINGS A BRIEF
ONSHORE FLOW RETURN SUNDAY WILL SHIFT EAST MONDAY WITH THE RIDGE
RE-STRENGTHENING LATE MONDAY AND TUESDAY. SO AFTER A BIT OF A "COOL
DOWN" LATE IN THE WEEKEND TEMPS SHOULD AGAIN TREND WARMER MON/TUE,
POSSIBLY CLOSE TO 90 IN SOME OF THE WARMER VALLEYS WHICH WOULD BE A
GOOD 20 DEGREES ABOVE NORMAL. THEN TURNING COOLER WED/THU AS THE
RIDGE BREAKS DOWN AND A WEAK TROF MOVES INTO NRN CALIFORNIA. WE`LL
SEE A BIG INCREASE IN HIGH CLOUDS WITH THIS AS EARLY AS LATE TUESDAY
BUT IT`S NOT LOOKING REAL GOOD FOR RAIN THIS FAR SOUTH. SOMEWHAT
BETTER CHANCES NORTH OF PT CONCEPTION BUT EVEN THERE ANY AMOUNTS
WOULD BE INSIGNIFICANT. THE RIDGE RETURNS QUICKLY AFTER  THAT FOR A
WARMING TREND GOING INTO NEXT WEEKEND.

&&

.AVIATION...05/2345Z.

AT 2330Z AT KLAX... THERE WAS NO INVERSION.

VFR CONDITIONS EXPECTED THROUGH PERIOD...EXCEPT A TEN PERCENT CHANCE
OF VLIFR/LIFR CONDITIONS AT KPRB BETWEEN 11Z-15Z. OTHERWISE OFFSHORE
FLOW WILL BRING A 30 PERCENT CHANCE OF LGT-MDT TURBULENCE/LLWS ACROSS
PORTIONS OF VENTURA AND LOS ANGELES COUNTIES ON FRIDAY.

KLAX...VFR CONDITIONS THROUGH PERIOD.

KBUR...VFR CONDITIONS THROUGH PERIOD. A 30 PERCENT CHANCE OF LGT-MDT
TURBULENCE/LLWS BETWEEN 16Z-00Z ON FRIDAY.

&&

.MARINE...05/200 PM...

WEAK TO LOCALLY MODERATE NORTHERLY FLOW ACROSS THE REGION THROUGH
FRIDAY WITH WEAK NORTHEAST FLOW NEAR THE IMMEDIATE COASTLINE.  FLOW
WILL BE LOCALLY MODERATE AT TIMES ALONG THE PORTIONS OF THE VENTURA
AND LOS ANGELES COUNTY COASTLINE AFFECTED BY SANTA ANA WINDS.  WIND
SPEEDS WILL INCREASE ON SATURDAY AND SUNDAY AND THERE IS A TWENTY
PERCENT CHANCE THEY MAY REACH SMALL CRAFT ADVISORY THRESHOLDS.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
HIGH RIP CURRENT RISK (SEE LAXSRFLOX).

&&

$$

PUBLIC...MW
AVIATION...GOMBERG
MARINE...KJ
SYNOPSIS...JLD

WWW.WEATHER.GOV/LOSANGELES











USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.