One last round of offshore winds affected sections of Southern California. Unlike previous events during December, the offshore winds with this event were confined to the mountains of Ventura and Los Angeles counties.
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.
The episode as NWS LOX wrote it up.
One last round of offshore winds affected sections of Southern California. Unlike previous events during December, the offshore winds with this event were confined to the mountains of Ventura and Los Angeles counties.
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 Dec 31, 8:30 PM PST, 3 hours 23 minutes earlier.
SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 830 PM PST MON DEC 31 2007 .SHORT TERM (TONIGHT-THURSDAY)... MAIN SHORT TERM CONCERNS WILL BE STRONG NORTHEAST WINDS AND ASSOCIATED FIRE WEATHER CONCERNS. SEVERAL OBSERVATION SITES REPORTING WIND GUSTS BETWEEN 40 AND 55 MPH IN VENTURA AND LOS ANGELES COUNTIES THIS EVENING. STRONG SURFACE HIGH PRESSURE CURRENTLY CENTERED OVER UTAH WILL STRENGTHEN TO AN IMPRESSIVE 1056 MB CENTER OVER NW COLORADO BY 12Z TUESDAY. AS A RESULT...VERY STRONG OFFSHORE PRESSURE GRADIENT HAS ALREADY ESTABLISHED OVER SOUTHERN CALIFORNIA...AND WILL LIKELY INTENSIFY SLIGHTLY OVERNIGHT. CURRENT LAX-DAGGETT GRADIENT ALREADY -9.5 MB WHILE LAX-TONOPAH GRADIENT AT -15.2 MB. WITH SLIGHT LOW LEVEL COLD AIR REINFORCEMENT OVERNIGHT AND TIGHTENING PRESSURE GRADIENT...HIGH WIND WARNINGS LOOK GOOD FOR MOUNTAINS OF LOS ANGELES AND VENTURA COUNTIES...AS WELL AS THE SANTA CLARITA VALLEY. THESE LOCATIONS WILL LIKELY EXPERIENCE DAMAGING WIND GUSTS OVER 60 MPH. THE SURFACE HIGH OVER THE ROCKIES IS EXPECTED TO BEGIN WEAKENING AND SHIFT EASTWARD BY TUESDAY AFTERNOON...WHICH WILL GRADUALLY RELAX THE OFFSHORE PRESSURE GRADIENTS ACROSS SOUTHERN CALIFORNIA. HOWEVER... IT DOES APPEAR THAT WIND ADVISORIES WILL BE REQUIRED FOR MUCH OF LOS ANGELES AND VENTURA COUNTIES THROUGH EARLY WEDNESDAY MORNING. ANOTHER WARM DAY ON TAP FOR SOUTHERN CALIFORNIA...WITH MANY LOCATIONS READING WELL INTO THE 70S ON NEW YEARS DAY. A FEW WARMER COASTAL LOCATIONS MAY EVEN REACH THE 80 DEGREE MARK THE COMBINATION OF STRONG NORTHEAST WINDS AND LOW HUMIDITIES HAS CREATED CRITICAL FIRE WEATHER CONDITIONS ACROSS MUCH OF LOS ANGELES AND VENTURA COUNTIES...PROMPTING THE RED FLAG WARNING IN PLACE. SIGNIFICANT DRYING STARTING TO TAKE PLACE THIS EVENING...WITH SEVERAL REPORTING SITES NOW REPORTING SINGLE DIGIT HUMIDITIES. HUMIDITY RECOVERIES ARE EXPECTED TO BE VERY POOR OVERNIGHT ACROSS WIND PRONE AREAS...FOLLOWED BY WIDESPREAD SINGLE DIGIT READINGS ON NEW YEARS DAY. *** FROM PREVIOUS DISCUSSION *** WED WILL BE A BIT COOLER THAN TUES...BUT A LITTLE WARMER THAN PREVIOUSLY EXPECTED DUE TO THE PROLONGED OFFSHORE GRADS. SOUTHERLY FLOW PICKS UP OVER THE MOUNTAINS WED NIGHT AND THURSDAY IN ADVANCE OF THE FIRST WET WEATHER SYSTEM OF THE NEW YEAR. A 515 DM LOW IS STILL FORECASTED TO SWING AROUND A DEEP LOW OVER THE GULF OF ALASKA AND MOVE ONTO THE OREGON COAST ON THURSDAY. THIS WILL ALLOW A DEEP LAYER OF SOUTHERLY FLOW TO FORM OVER CENTRAL AND SOUTHERN CALIFORNIA WED NIGHT AND THU...WITH NEARLY 50 KT OVER SLO COUNTY AT 5000 FEET. BOTH THE GFS AND ECMWF CONTINUE TO SHOW GOOD AGREEMENT WITH THIS SYSTEM...WITH THE ONLY MAJOR DISAGREEMENT CONTINUING TO BE THE TIMING. RECENT RUNS OF THE GFS HAS TREND TOWARD THE LATER ECMWF RUN...WITH THE FIRST SHOT OF RAIN NORTH OF POINT CONCEPTION THU AFTERNOON...THEN MOVING DOWN TO THE SOUTH DURING THE NIGHT. SCALED DOWN POPS FOR THURS DAY PERIOD TO THE SOUTH TO ACCOUNT FOR THIS...BUT THURS NIGHT STILL LOOKS GOOD FOR MODERATE RAINFALL OVER THE REGION. THIS RAIN EVENT LOOKS TO BE FAIRLY WARM IN NATURE WITH HIGH SNOW LEVELS AS MUCH OF THE MOISTURE IS TAGGED TO COME FROM THE SOUTH. THIS BIT OF MOISTURE IS STILL THE WILDCARD AS TO HOW MUCH RAIN WE WILL GET. THE LATEST GFS HAS TRIMMED BACK ON THE AMOUNT OF THIS MOISTURE...AS MODELS OFTEN STRUGGLE WITH THIS. AS OF NOW...IT LOOKS LIKE COASTAL AND VALLEY AREAS SHOULD GET ABOUT ONE HALF TO ONE INCH FROM THIS FIRST SHOT OF RAIN...WITH MOUNTAIN AREAS GOING UP TO TWO INCHES. .LONG TERM (FRIDAY-MONDAY)... A SERIES OF UPPER LEVEL LOWS ARE EXPECTED TO SWING INTO THE PAC NW FRI THROUGH SUN...BRINGING MORE CHANCES OF RAIN. AFTER THE THURS SYSTEM...A MORE POWERFUL AND SLIGHTLY COLDER 499 DM LOW AND ASSOCIATED FRONTAL SYSTEM IS EXPECTED TO BRING RAIN AND SNOW TO THE AREA FRI INTO FRI NIGHT. WITH A BRIEF LULL LATER ON SAT...ANOTHER IMPULSE WILL BRING MORE RAIN SUN AND SUN NIGHT. OVERALL...IT LOOKS TO BE A VERY WET START TO THE NEW YEAR. PRELIMINARY ESTIMATES FOR TOTAL RAINFALL THUR THROUGH SUN LOOK TO BE FROM 1 TO 3 INCHES FOR COASTAL AREAS...TO 3 TO 5 INCHES IN THE MOUNTAINS. && .AVIATION...01/0415Z... VFR CONDITIONS EXPECTED SHOULD PERSIST AT MOST AIRFIELDS THROUGH THE PERIOD AS OFFSHORE FLOW KEEPS THE AREA DRY. MODERATE TO STRONG TURBULENCE EXPECTED OVER THE MTNS THROUGH THE PERIOD...STRONGEST BETWEEN 04Z AND 12Z. THIS SHOULD ALSO CARRY THROUGH TO KSBA... KVNY...AND KBUR. LLWS WILL LIKELY ALSO OCCUR AROUND KBUR AND KVNY. .KLAX...VFR CONDITIONS EXPECTED THOUGH EAST WINDS EXPECTED TO REFORM OVERNIGHT...AND STRENGTHEN TO AROUND 10 KTS. LOW CONFIDENCE ON EAST WIND SPEEDS...WITH GUSTS OVER 10 KTS POSSIBLE AFTER 08Z. .KBUR...VFR CONDS EXPECTED THROUGH THE PERIOD. MODERATE TO STRONG TURBULENCE...AND LLWS ARE VERY LIKELY THROUGH TUES AM...STRONGEST OVERNIGHT AND TUESDAY MORNING. NE WINDS SHOULD PERSIST...WITH SPEEDS OVER 12 KTS POSSIBLE. && .LOX WATCHES/WARNINGS/ADVISORIES... HIGH WIND WARNING (SEE LAXNPWLOX). RED FLAG WARNING (SEE LAXRFWLOX). GALE WARNING (SEE LAXCWFLOX) WIND ADVISORY (SEE LAXNPWLOX). SMALL CRAFT ADVISORY (SEE LAXCWFLOX). MARINE WEATHER STATEMENT (SEE LAXMWSLOX). SPECIAL WEATHER STATEMENT (SEE LAXSPSLOX). && PUBLIC...GOMBERG/KITTELL AVIATION...GOMBERG WWW.WEATHER.GOV/LOSANGELES
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 330 PM PST MON DEC 31 2007 CAZ034>041-044>047-051>054-059-087-088-011400- 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- 330 PM PST MON DEC 31 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWESTERN CALIFORNIA. .DAY ONE... TODAY STRONG WINDS WILL CONINTUE ACROSS MUCH OF LOS ANGELES AND VENTURA COUNTIES THROUGH TONIGHT...WITH THE STRONGEST WINDS FOCUSED BELOW AND THROUGH NORTHEAST FACING PASSES AND CANYONS. DAMAGING WIND GUSTS OVER 60 MPH WILL BE LIKELY ACROSS THE MOUNTAINS AND SANTA CLARITA VALLEY. THE COMBINATION OF STRONG NORTHEAST WINDS AND LOW HUMIDITIES HAS CREATED CRITICAL FIRE WEATHER CONDITIONS ACROSS MUCH OF LOS ANGELES AND VENTURA COUNTIES...WHERE A RED FLAG WARNING REMAINS IN EFFECT. * HIGH WIND WARNING..........SEE WWUS76 KLOX - NPWLOX FOR DETAILS * * RED FLAG WARNING...........SEE WWUS86 KLOX - RFWLOX FOR DETAILS * * WIND ADVISORY..............SEE WWUS76 KLOX - NPWLOX FOR DETAILS * * MARINE WEATHER STATEMENT...SEE FZUS76 KLOX - MWSLOX FOR DETAILS * .DAYS TWO THROUGH SEVEN... TUESDAY THROUGH SUNDAY STRONG WINDS WILL CONTINUE BELOW AND THROUGH PASSES AND CANYONS OF LOS ANGELES AND VENTURA COUNTIES THROUGH WEDNESDAY MORING. ONCE AGAIN...DAMAGING WIND GUSTS OVER 60 MPH CAN BE EXPECTED IN THE MOUNTAINS OF LOS ANGELES AND VENTURA COUNTIES...AS WELL AS THE SANTA CLARITA VALLEY. A SERIES OF THREE PACFIC STORMS IS EXPECTED TO BRING SIGNIFICANT RAINFALL AND PERIODS OF STRONG WINDS THURSDAY THROUGH SUNDAY. THE STRONGEST OF THE THREE STORMS IS EXPECTED TO AFFECT THE REGION FRIDAY INTO FRIDAY NIGHT. THERE IS CERTAINLY THE POTENTIAL FOR HIGH RAINFALL INTENSITIES WHICH COULD BRING A SIGNIFICANT THREAT OF DEBRIS FLOWS TO THE BURN AREAS...ESPECIALLY WITH THE FRIDAY STORM. DUE TO RAPID SUCCESSION OF WEATHER SYSTEMS...THERE WILL ALSO BE A THREAT OF OTHER FLOODING ISSUES OUTSIDE THE BURN AREAS. THE FRIDAY SYSTEM WILL ALSO BRING THE THREAT OF DAMAGING WINDS TO THE CENTRAL COAST...MOUNTAINS...AND HIGHER VALLEYS. * HIGH WIND WARNING..........SEE WWUS76 KLOX - NPWLOX FOR DETAILS * * RED FLAG WARNING...........SEE WWUS86 KLOX - RFWLOX FOR DETAILS * * WIND ADVISORY..............SEE WWUS76 KLOX - NPWLOX FOR DETAILS * * MARINE WEATHER STATEMENT...SEE FZUS76 KLOX - MWSLOX FOR DETAILS * .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. GOMBERG
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
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OXNARD CA
1028 PM PST MON DEC 31 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0336 AM NON-TSTM WND GST 3 NE MALIBU 34.06N 118.63W
12/31/2007 M63.00 MPH LOS ANGELES CA PARK/FOREST SRVC
NORTHEAST WIND GUST IN MALIBU HILLS.
0243 PM NON-TSTM WND GST 5 ESE FILLMORE 34.37N 118.84W
12/31/2007 M67.00 MPH VENTURA CA PARK/FOREST SRVC
NORTHEAST WIND GUST.
0653 PM NON-TSTM WND GST 8 ESE CASTAIC LAKE 34.60N 118.58W
12/31/2007 M57.00 MPH LOS ANGELES CA PARK/FOREST SRVC
NORTHEAST WIND GUST.
0745 PM NON-TSTM WND GST 1 NNW POINT MUGU 34.11N 119.07W
12/31/2007 M87.00 MPH VENTURA CA MESONET
NORTHEAST WIND GUSTS MEASURED AT LAGUNA PEAK.
0823 PM NON-TSTM WND GST 14 SW PORT HUENEME 34.02N 119.36W
12/31/2007 M64.00 MPH VENTURA CA PARK/FOREST SRVC
NORTHEAST WIND GUST ON ANACAPA ISLAND.
0900 PM NON-TSTM WND GST 4 W SAN FERNANDO 34.30N 118.51W
12/31/2007 M59.00 MPH LOS ANGELES CA MESONET
&&
HALL2 high wind. Local standard time, as filed.
The Warm Springs RAWS sensor reported northerly winds gusting to 58 mph.
North to northeast winds gusting to around 58 mph were reported in the mountains of Ventura county.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2007Every state in 2007This day in weather historyWarnings in California, December 2007
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: 65838, 65839.