California, 2007

High Wind in California, November 11, 2007

November 11, 2007 · NWS LOX · 1 event in 1 county or zone

Gusty north to northeast winds were reported in the mountains of Los Angeles county.

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS LOX wrote it up.

Gusty north to northeast winds were reported in the mountains of Los Angeles county.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Los Angeles, CA wrote its last area forecast discussion before the first event at Nov 11, 8:35 PM PST, 2 minutes earlier.

Area forecast discussion, Nov 11, 8:35 PM PST, 2 minutes before
SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
835 PM PST SUN NOV 11 2007

.SHORT TERM (TONIGHT-WEDNESDAY)...A WEAK UPPER LEVEL LOW PRESSURE SYSTEM
CENTERED OVER LOS ANGELES COUNTY WILL CONTINUE TO DIG SOUTHWARD OVERNIGHT...
RESULTING IN INCREASING NORTH TO NORTHEAST FLOW ALOFT IN THE WAKE OF
THE SYSTEM. CURRENT RADAR IMAGERY AND OBSERVATIONAL DATA SHOWING
MOST OF THE RAINFALL HAS ENDED ACROSS THE REGION WITH THE EXCEPTION
OF SOME SHOWER ACTIVITY ACROSS THE NORTH SLOPES OF THE MOUNTAINS AND
ANTELOPE VALLEY. THESE LOCATIONS ARE EXPECTED TO RECEIVE SCATTERED
TO ISOLATED SHOWER COVERAGE OVERNIGHT DUE TO THE PROXIMITY OF THE
WRAP AROUND MOISTURE.

THE MAIN SHORT TERM CONCERN WILL BE INCREASING WINDS ACROSS THE DISTRICT.
INITIALLY...THE STRONGEST WINDS WILL BE FOCUSED THROUGH THE NORTH-SOUTH
FACING PASSES AND CANYONS OF THE SANTA YNEZ RANGE AND INTERSTATE 5
CORRIDOR. AFTER MIDNIGHT...THE FLOW IS EXPECTED TO BECOME MORE
NORTHEASTERLY...WITH WINDS BECOMING MORE WIDESPEAD BELOW AND THORUGH
PASSES AND CANYONS OF LOS ANGELES AND VENTURA COUNTIES. WIND ADVISORY
HAS BEEN POSTED FOR THE MOUNTAINS OF SANTA BARBARA...VENTURA...AND
LOS ANGELES COUNTIES...AS WELL AS THE PASSES AND CANYONS OF THE
SANTA BARBARA COUNTY SOUTH COAST. MAIN CONCERN TONIGHT WILL BE A
STRONG NORTHERLY JET OF AROUND 120 KNOTS...CURRENTLY APPROACHING
SANTA BARBARA COUNTY THAT WILL TRACK EASTWARD ACROSS VENTURA AND
LOS ANGELES COUNTIES OVERNIGHT. IN ADDITION...LATEST WRF INDICATED
850 MB WIND SPEEDS BETWEEN 40 AND 50 KNOTS OVERNIGHT...ALONG WITH
INCREASING LOW LEVEL OFFSHORE GRADIENTS. THIS WILL LIKELY TRANSLATE
INTO WIND GUSTS UP TO AT LEAST 55 MPH IN FAVORED PASSES AND CANYONS...
WITH LATER SHIFTS POSSIBLY NEEDING TO UPGRADE TO A HIGH WIND WARNING
FOR LA COUNTY MOUNTAINS. WHILE THE STRONGEST WINDS ARE EXPECTED TO
OCCUR IN THE MOUNTAINS...IT DOES APPEAR THAT GUSTY NORTH TO NORTHEAST
WINDS WILL GRAUDALLY SURFACE INTO THE VALLEYS AND EVEN SOME COASTAL
AREAS LATER TONIGHT AND MONDAY MORNING. AS A RESULT...HAVE BUMPED
UP WIND SPEEDS A BIT IN EVENING UPDATE FOR THE COAST AND VALLEYS
OF LA/VTU COUNTIES...WITH LATER SHIFTS POSSIBLY NEEDING TO EXPAND
THE WIND ADVISORY FOR SOME OF THESE LOCATIONS.

OTHER SHORT TERM CONCERN WILL BE RADIATIONAL FOG DUE TO THE LINGERING
LOW LEVEL MOISTURE AND LIGHTER WINDS...MAINLY NORTH OF POINT CONCEPTION.
HAVE INTRODUCED PATCHY DENSE FOG FOR MOST LOCATIONS NORTH OF POINT
CONCEPTION TONIGHT.

THE OFFSHORE FLOW WILL BRING SIGNIFICANT WARMING TO THE REGION
ON MONDAY...WITH ADDITIONAL WARMING EXPECTED ON TUESDAY. MANY
COASTAL AND VALLEY LOCATIONS ARE EXPECTED TO SOAR WELL INTO THE
80S ON TUESDAY.  CONTINUED WARM AND DRY ON WEDNESDAY.

*** LONG TERM FROM PREVIOUS DISCUSSION ***

.LONG TERM (THURSDAY-SUNDAY)...AN INTERMITTENT ONSHORE/OFFSHORE
PATTERN SHOULD CONTINUE TO OCCUR FOR LATE WEEK AND THROUGHOUT THE
WEEKEND...AS A SERIES OF WEAK SYSTEMS CONTINUES TO PUSH SOUTH
FROM THE NORTHWEST. AT THIS TIME...NO REAL THREAT FOR
PRECIPITATION EXISTS EXCEPT FOR AREAS NORTH OF POINT CONCEPTION.
WITH MODEL PERFORMANCE POOR AT THE CURRENT TIME...BEST APPROACH
IS TO TAKE CONSERVATIVE APPROACH...MENTIONING NO PRECIPITATION
AND ONLY INCREASING CLOUDINESS.

&&

.AVIATION...AT 0415Z...INCREASING NORTHERLY FLOW STARTING TO BREAK
UP THE LOW LEVEL MOISTURE ACROSS THE REGION...SO CLOUD COVERAGE
EXPECTED TO BE QUITE CHAOTIC DURING NEXT FEW HOURS. OVERALL...THE
TRENDS ARE FOR LESS CLOUDS OVERNIGHT ACROSS TAF LOCATIONS SOUTH OF
POINT CONCEPTION...WITH THE EXCEPTION OF KWJF AND KPMD. WILL
HAVE TO CLOSELY MONITOR KSBP...KSMX...AND KPRB FOR POTENTIAL
DENSE FOG.

.KLAX...SCT-BKN CONDITIONS LIKELY TO CONTINUE AT KLAX FOR MUCH OF
NIGHT. FOR NEXT FEW HOURS...WILL HAVE TO BE CONCERNED WITH LIFR
CONDITIONS DUE TO RADIATIONAL FOG. AS DRIER NORTHEAST FLOW PREVAILS
LATER TONIGHT AND MONDAY...SHOULD CONTINUE TO SEE DECREASING TREND
IN CLOUDS AND IMPROVED VISIBILITIES. THERE IS A CHANCE THAT SOME NORTH
TO NORTHEAST WINDS WILL AFFECT KLAX LATER TONIGHT...BUT ARE GENERALLY
EXPECTED TO REMAIN UNDER 10 KT.

.KBUR...SCT-BKN CONDITIONS LIKELY TO CONTINUE AT KLAX FOR MUCH OF
NIGHT. FOR NEXT FEW HOURS...WILL HAVE TO MONITOR FOR POTENTIAL
LOW VSBYS IN RADIATIONAL FOG. AS DRIER NORTHEAST FLOW PREVAILS
LATER TONIGHT AND MONDAY...SHOULD CONTINUE TO SEE DECREASING TREND
IN CLOUDS AND IMPROVED VISIBILITIES. THERE IS A CHANCE THAT SOME NORTH
TO NORTHEAST WINDS WILL AFFECT KBUR LATER TONIGHT...BUT ARE GENERALLY
EXPECTED TO REMAIN UNDER 10 KT. HOWEVER...NEXT TAF PACKAGE WILL INCLUDE
SOME LLWS DUE TO POTENTIAL STRONGER WINDS ABOVE SURFACE.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
SMALL CRAFT ADVISORY (SEE LAXCWFLOX).
WIND ADVISORY (SEE LAXNPWLOX).

&&

PUBLIC...GOMBERG/HALL
AVIATION...GOMBERG

WWW.WEATHER.GOV/LOSANGELES
Hazardous weather outlook, Nov 11, 3:35 PM PST, 5 hours 2 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
335 PM PST SUN NOV 11 2007

CAZ034>041-044>047-051>054-059-087-088-121400-
SAN LUIS OBISPO COUNTY CENTRAL COAST-
SANTA BARBARA COUNTY CENTRAL COAST-SANTA YNEZ VALLEY-
SAN LUIS OBISPO COUNTY INTERIOR VALLEYS-CUYAMA VALLEY-
SANTA BARBARA COUNTY SOUTH COAST-VENTURA COUNTY COAST-
LOS ANGELES COUNTY COAST INCLUDING DOWNTOWN LOS ANGELES-
VENTURA COUNTY INTERIOR VALLEYS-VENTURA COUNTY COASTAL VALLEYS-
SANTA MONICA MOUNTAINS RECREATIONAL AREA-
LOS ANGELES COUNTY VALLEYS-SAN LUIS OBISPO COUNTY MOUNTAINS-
SANTA BARBARA COUNTY MOUNTAINS-VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
ANTELOPE VALLEY-CATALINA ISLAND-SANTA CLARITA VALLEY-
335 PM PST SUN NOV 11 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWESTERN CALIFORNIA.

.DAY ONE... TODAY

AN UPPER LEVEL TROUGH WILL CONTINUE TO BRING SCATTERED SHOWERS
TO THE REGION THROUGH THIS EVENING. THIS SYSTEM IS GENERALLY
EXPECTED TO BRING ONE TENTH OF AN INCH OR LESS TO MUCH OF THE
REGION...BUT LOCAL AMOUNTS UP TO ONE THIRD OF AN INCH WILL
BE POSSIBLE NEAR HEAVIER SHOWERS. GUSTY WEST TO NORTHWEST WINDS
HAVE ALREADY DEVELOPED ACROSS SEVERAL LOCATIONS THIS AFTERNOON...
INCLUDING THE ANTELOPE VALLEY AND CENTRAL COAST. AS THE FLOW TURNS
MORE NORTHERLY TONIGHT...THERE WILL BE INCREASING WINDS BELOW AND
THROUGH PASSES AND CANYONS OF SOUTHERN SANTA BARBARA COUNTY. A WIND
ADVISORY IS IN EFFECT FOR THESE AREAS...WHERE LOCAL GUSTS OVER 50 MPH
CAN BE EXPECTED. IN ADDITION...GUSTY NORTHERLY WINDS ARE ALSO EXPECTED
TO INCREASE ACROSS THE MOUNTAINS OF VENTURA AND LOS ANGELES COUNTIES
TONIGHT...ESPECIALLY NEAR THE INTERSTATE 5 CORRIDOR.

* WIND ADVISORY..............SEE WWUS76 KLOX - NPWLOX FOR DETAILS *

* GALE WARNING...............SEE FZUS56 KLOX - CWFLOX FOR DETAILS *

.DAYS TWO THROUGH SEVEN... MONDAY THROUGH SATURDAY

BY MONDAY MORNING...WINDS WILL SHIFT TO NORTHEAST AND GUSTY WINDS
WILL BECOME MORE WIDESPREAD IN THE VALLEYS OF LOS ANGELES AND
VENTURA COUNTIES...ACROSS THE VENTURA COUNTY COASTAL PLAIN...AND IN
COASTAL SECTIONS OF LOS ANGELES COUNTY BELOW PASSES AND CANYONS FROM
MALIBU TO HOLLYWOOD. THE OFFSHORE FLOW WILL BRING A SIGNIFICANT
DRYING TREND TO SOUTHWESTERN CALIFORNIA MONDAY...WITH RELATIVE
HUMIDITIES POSSIBLY DROPPING TO NEAR CRITICAL LEVELS FOR FIRE
WEATHER MONDAY INTO WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

GOMBERG/HALL

Event by event

1 high wind. Local standard time, as filed.

High Wind, Los Angeles County Mountains Excluding the Santa Monica Range

When
November 11, 8:37 PM PST to 9:37 PM PST
Where
Los Angeles County Mountains Excluding the Santa Monica Range forecast zone
Measured
60 kt (69 mph) measured gust
Reported by
Mesonet

The Whitaker Peak RAWS sensor reported north to northeast wind gusts of 67 and 69 mph.

What these are

High Wind
Sustained non-thunderstorm winds of 40 mph or more for an hour, or gusts of 58 mph or more.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in California in 2007Every state in 2007This day in weather historyWarnings in California, November 2007

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 65802.