Alert archive / California / Frost Advisories in 2011
Frost Advisory 7, NWS Los Angeles, CA
NWS Los Angeles, CA issued this frost advisory at Oct 27, 2011, 3:04 AM PDT for Santa Barbara County, California. It took effect at Oct 28, 2011, 1:00 AM PDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Oct 27, 2011, 3:04 AM PDT (10:04 UTC)
- In effect from
- Oct 28, 2011, 1:00 AM PDT
- Expired
- Oct 28, 2011, 9:00 AM PDT
- In force
- 8 hr
- Issued by
- NWS Los Angeles, CA
County Santa Barbara County, CA
The nearest sounding before it
Vandenberg AFB, CA (KVBG), launched 00:00Z, 10.1 hours before the alert went out and 48 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2010 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- -35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
228 WWUS76 KLOX 271004 NPWLOX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 304 AM PDT THU OCT 27 2011 ...GUSTY SANTA ANA WINDS EXPECTED THROUGH THURSDAY... ...AREAS OF FROST EXPECTED THIS MORNING AND TONIGHT ACROSS THE ANTELOPE VALLEY...CUYAMA VALLEY...AND INTERIOR VALLEYS OF SAN LUIS OBISPO COUNTY... .SURFACE HIGH PRESSURE IN THE GREAT BASIN WILL BRING MODERATE SANTA ANA WINDS TO SECTIONS OF SOUTHWESTERN CALIFORNIA THROUGH THIS AFTERNOON. WINDS ARE EXPECTED TO INCREASE IN STRENGTH AND AREAL COVERAGE THIS MORNING. THE MOUNTAINS OF LOS ANGELES AND VENTURA COUNTIES CAN EXPECT WIND GUSTS BETWEEN 40 AND 50 MPH WHILE VALLEY LOCATIONS CAN GENERALLY EXPECT GUSTS BETWEEN 30 AND 40 MPH DURING THE PEAK OF THE EVENT. ISOLATED GUSTS TO 35 MPH CAN BE EXPECTED ACROSS COASTAL AREAS OF LOS ANGELES AND VENTURA COUNTIES ON THIS MORNING...WHICH MAY REQUIRE AN EXTENSION OF THE WIND ADVISORY TO THOSE AREAS. AS THE OFFSHORE WINDS DEVELOP...VERY COLD AND DRY AIR WILL MOVE INTO THE INTERIOR VALLEYS OF SAN LUIS OBISPO AND SANTA BARBARA COUNTIES...AND THE ANTELOPE VALLEY. IN WIND SHELTERED AREAS TEMPERATURES ARE EXPECTED TO DROP BELOW FREEZING THIS MORNING LIKELY PRODUCING THE FIRST SIGNIFICANT FROST OF THE SEASON. THE BELOW-FREEZING TEMPERATURES WILL RETURN EARLY FRIDAY MORNING ACROSS THE SAME AREAS...AND COULD DIP BELOW 28 DEGREES IN PORTIONS OF THE ANTELOPE VALLEY. A FREEZE WATCH IS IN EFFECT FOR TONIGHT ACROSS THE ANTELOPE VALLEY DUE TO THE POTENTIAL HARD FREEZE CONDITIONS...WHILE FROST ADVISORIES HAVE BEEN ISSUED AGAIN TONIGHT FOR THE CUYAMA VALLEY AND INTERIOR SAN LUIS OBISPO COUNTY. CAZ037-038-271600- /O.NEW.KLOX.FR.Y.0007.111028T0800Z-111028T1600Z/ /O.CON.KLOX.FR.Y.0006.000000T0000Z-111027T1600Z/ SAN LUIS OBISPO COUNTY INTERIOR VALLEYS-CUYAMA VALLEY- INCLUDING THE CITIES OF...PASO ROBLES...ATASCADERO...CUYAMA 304 AM PDT THU OCT 27 2011 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... ...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM PDT FRIDAY... THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 1 AM TO 9 AM PDT FRIDAY. * TEMPERATURES...TEMPERATURES ARE EXPECTED TO DROP TO BETWEEN 28 TO 32 DEGREES ACROSS WIND SHELTERED LOCATIONS. * TIMING...TEMPERATURES BETWEEN 28 TO 32 DEGREES WILL DEVELOP EARLY THIS MORNING...THEN AGAIN LATE TONIGHT INTO FRIDAY MORNING. * IMPACTS...THE COLD TEMPERATURES COULD RESULT IN DAMAGE TO CROPS AND SENSITIVE PLANTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ CAZ059-271600- /O.CON.KLOX.FR.Y.0006.000000T0000Z-111027T1600Z/ /O.CON.KLOX.FZ.A.0001.111028T0800Z-111028T1600Z/ ANTELOPE VALLEY- INCLUDING THE CITIES OF...LANCASTER...PALMDALE 304 AM PDT THU OCT 27 2011 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY MORNING... * TEMPERATURES...TEMPERATURES ARE EXPECTED TO DROP TO BETWEEN 28 TO 32 DEGREES EARLY THIS MORNING. BY FRIDAY MORNING...TEMPERATURES MAY DROP BELOW 28 DEGREES IN SOME AREAS. * TIMING...TEMPERATURES BETWEEN 28 TO 32 DEGREES WILL DEVELOP EARLY THIS MORNING. ANOTHER ROUND OF COLD TEMPERATURES IS EXPECTED LATE TONIGHT INTO FRIDAY MORNING. * IMPACTS...THE COLD TEMPERATURES COULD RESULT IN DAMAGE TO CROPS AND SENSITIVE PLANTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ CAZ053-054-271600- /O.CON.KLOX.WI.Y.0062.000000T0000Z-111027T2200Z/ VENTURA COUNTY MOUNTAINS- LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE- INCLUDING THE CITIES OF...LOCKWOOD VALLEY...MOUNT PINOS...ACTON... MOUNT WILSON...SANDBERG 304 AM PDT THU OCT 27 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... * WINDS...NORTHEAST 20 TO 30 MPH WITH GUSTS TO 45 MPH...EXCEPT ISOLATED GUSTS TO 50 MPH THROUGH FAVORED PASSES AND CANYONS. * TIMING...WINDS WILL PEAK IN STRENGTH THIS MORNING...THEN DIMINISH THIS AFTERNOON. * IMPACTS...DANGEROUS CROSS WINDS ARE LIKELY ACROSS THE AREA... MAKING DRIVING CONDITIONS HAZARDOUS FOR HIGH PROFILE VEHICLES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH OR GREATER ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ CAZ046-271600- /O.CON.KLOX.WI.Y.0062.000000T0000Z-111027T2200Z/ SANTA MONICA MOUNTAINS RECREATIONAL AREA- INCLUDING THE CITY OF...TOPANGA 304 AM PDT THU OCT 27 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... * WINDS...NORTH TO NORTHEAST 20 TO 30 MPH WITH GUSTS TO 50 MPH STRONGEST THROUGH AND BELOW PASSES AND CANYONS. * TIMING...WINDS WILL PEAK IN STRENGTH THIS MORNING...THEN DIMINISH THIS AFTERNOON. * IMPACTS...DANGEROUS CROSS WINDS ARE LIKELY ACROSS THE AREA... MAKING DRIVING CONDITIONS HAZARDOUS FOR HIGH PROFILE VEHICLES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH OR GREATER ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ CAZ044-045-271600- /O.CON.KLOX.WI.Y.0062.000000T0000Z-111027T2200Z/ VENTURA COUNTY INTERIOR VALLEYS-VENTURA COUNTY COASTAL VALLEYS- INCLUDING THE CITIES OF...SANTA PAULA...FILLMORE...OJAI...PIRU... THOUSAND OAKS...NEWBURY PARK...MOORPARK...SIMI VALLEY 304 AM PDT THU OCT 27 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... * WINDS...NORTHEAST 15 TO 25 MPH WITH GUSTS TO 40 MPH...EXCEPT ISOLATED GUSTS TO 45 MPH IN THE HILLS. THE STRONGEST WIND GUSTS WILL OCCUR IN THE HILLS AND BELOW PASSES AND CANYONS. * TIMING...WINDS WILL PEAK IN STRENGTH THIS MORNING...THEN DIMINISH THIS AFTERNOON. * IMPACTS...DANGEROUS CROSS WINDS ARE LIKELY ACROSS THE AREA... MAKING DRIVING CONDITIONS HAZARDOUS FOR HIGH PROFILE VEHICLES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH OR GREATER ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ CAZ088-271600- /O.CON.KLOX.WI.Y.0062.000000T0000Z-111027T2200Z/ SANTA CLARITA VALLEY- INCLUDING THE CITIES OF...SANTA CLARITA...NEWHALL...VALENCIA 304 AM PDT THU OCT 27 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... * WINDS...NORTHEAST 20 TO 30 MPH WITH GUSTS TO 40 MPH. THE STRONGEST WIND GUSTS WILL OCCUR BELOW PASSES AND CANYONS. * TIMING...WINDS WILL PEAK IN STRENGTH THIS MORNING...THEN DIMINISH THIS AFTERNOON. * IMPACTS...DANGEROUS CROSS WINDS ARE LIKELY ACROSS THE AREA... MAKING DRIVING CONDITIONS HAZARDOUS FOR HIGH PROFILE VEHICLES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH OR GREATER ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ CAZ547-271600- /O.CON.KLOX.WI.Y.0062.000000T0000Z-111027T2200Z/ LOS ANGELES COUNTY SAN FERNANDO VALLEY- INCLUDING THE CITIES OF...WOODLAND HILLS...NORTHRIDGE...BURBANK... UNIVERSAL CITY 304 AM PDT THU OCT 27 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... * WINDS...NORTHEAST 15 TO 25 MPH WITH GUSTS TO 40 MPH. THE STRONGEST WINDS GUSTS ARE EXPECTED ACROSS NORTHERN AND WESTERN PORTIONS. * TIMING...WINDS WILL PEAK IN STRENGTH THIS MORNING...THEN DIMINISH THIS AFTERNOON. * IMPACTS...DANGEROUS CROSS WINDS ARE LIKELY ACROSS THE AREA... MAKING DRIVING CONDITIONS HAZARDOUS FOR HIGH PROFILE VEHICLES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH OR GREATER ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ RAT
5 follow-up statements
631 WWUS76 KLOX 271613 NPWLOX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 913 AM PDT THU OCT 27 2011 ...GUSTY SANTA ANA WINDS EXPECTED THROUGH THIS AFTERNOON... ...AREAS OF FROST AND FREEZING TEMPERATURES POSSIBLE AGAIN TONIGHT ACROSS THE ANTELOPE VALLEY...CUYAMA VALLEY...AND INTERIOR VALLEYS OF SAN LUIS OBISPO COUNTY... .SURFACE HIGH PRESSURE IN THE GREAT BASIN WILL CONTINUE TO BRING MODERATE SANTA ANA WINDS TO SECTIONS OF SOUTHWESTERN CALIFORNIA THROUGH THIS AFTERNOON. WINDS WILL INCREASE IN STRENGTH AND AREAL COVERAGE THIS MORNING. THE MOUNTAINS OF LOS ANGELES AND VENTURA COUNTIES CAN EXPECT WIND GUSTS BETWEEN 40 AND 50 MPH WHILE VALLEY LOCATIONS CAN GENERALLY EXPECT GUSTS BETWEEN 30 AND 40 MPH DURING THE PEAK OF THE EVENT THIS MORNING. THESE OFFSHORE WINDS WILL ALLOW COLD AND DRY AIR TO MOVE INTO THE INTERIOR VALLEYS OF SAN LUIS OBISPO AND SANTA BARBARA COUNTIES... AND THE ANTELOPE VALLEY. IN WIND SHELTERED AREAS TEMPERATURES ARE EXPECTED TO DROP BELOW FREEZING OVERNIGHT PRODUCING ANOTHER ROUND OF FROST AND EVEN TEMPERATURES DIPPING BELOW 28 DEGREES IN PORTIONS OF THE ANTELOPE VALLEY. A FREEZE WATCH IS IN EFFECT FOR TONIGHT ACROSS THE ANTELOPE VALLEY DUE TO THE POTENTIAL HARD FREEZE CONDITIONS...WHILE FROST ADVISORIES HAVE BEEN ISSUED AGAIN TONIGHT FOR THE CUYAMA VALLEY AND INTERIOR SAN LUIS OBISPO COUNTY. CAZ037-038-272230- /O.EXP.KLOX.FR.Y.0006.000000T0000Z-111027T1600Z/ /O.CON.KLOX.FR.Y.0007.111028T0800Z-111028T1600Z/ SAN LUIS OBISPO COUNTY INTERIOR VALLEYS-CUYAMA VALLEY- INCLUDING THE CITIES OF...PASO ROBLES...ATASCADERO...CUYAMA 913 AM PDT THU OCT 27 2011 ...FROST ADVISORY ALLOWED TO EXPIRE AT 9 AM PDT THIS MORNING... ...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 9 AM PDT FRIDAY... * TEMPERATURES...TEMPERATURES ARE EXPECTED TO DROP TO BETWEEN 28 TO 32 DEGREES ACROSS WIND SHELTERED LOCATIONS. * TIMING...TEMPERATURES BETWEEN 28 TO 32 DEGREES WILL DEVELOP LATE TONIGHT INTO FRIDAY MORNING. * IMPACTS...THE COLD TEMPERATURES COULD RESULT IN DAMAGE TO CROPS AND SENSITIVE PLANTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ CAZ059-272230- /O.EXP.KLOX.FR.Y.0006.000000T0000Z-111027T1600Z/ /O.CON.KLOX.FZ.A.0001.111028T0800Z-111028T1600Z/ ANTELOPE VALLEY- INCLUDING THE CITIES OF...LANCASTER...PALMDALE 913 AM PDT THU OCT 27 2011 ...FROST ADVISORY ALLOWED TO EXPIRE AT 9 AM PDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY MORNING... * TEMPERATURES...TEMPERATURES FRIDAY MORNING MAY DROP BELOW 28 DEGREES IN SOME AREAS. * TIMING...TEMPERATURES BELOW 28 DEGREES MAY OCCUR LATE TONIGHT INTO FRIDAY MORNING. * IMPACTS...THE COLD TEMPERATURES COULD RESULT IN DAMAGE TO CROPS AND SENSITIVE PLANTS PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ CAZ053-054-272200- /O.CON.KLOX.WI.Y.0062.000000T0000Z-111027T2200Z/ VENTURA COUNTY MOUNTAINS- LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE- INCLUDING THE CITIES OF...LOCKWOOD VALLEY...MOUNT PINOS...ACTON... MOUNT WILSON...SANDBERG 913 AM PDT THU OCT 27 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... * WINDS...NORTHEAST 20 TO 30 MPH WITH GUSTS TO 45 MPH...EXCEPT ISOLATED GUSTS TO 50 MPH THROUGH FAVORED PASSES AND CANYONS. * TIMING...WINDS WILL PEAK IN STRENGTH LATE THIS MORNING...THEN DIMINISH THIS AFTERNOON. * IMPACTS...DANGEROUS CROSS WINDS ARE LIKELY ACROSS THE AREA... MAKING DRIVING CONDITIONS HAZARDOUS FOR HIGH PROFILE VEHICLES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 45 MPH OR GREATER ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ CAZ046-272200- /O.CON.KLOX.WI.Y.0062.000000T0000Z-111027T2200Z/ SANTA MONICA MOUNTAINS RECREATIONAL AREA- INCLUDING THE CITY OF...TOPANGA 913 AM PDT THU OCT 27 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... * WINDS...NORTH TO NORTHEAST 20 TO 30 MPH WITH GUSTS TO 40 MPH STRONGEST THROUGH AND BELOW CANYONS. * TIMING...WINDS WILL PEAK IN STRENGTH LATE THIS MORNING...THEN DIMINISH THIS AFTERNOON. * IMPACTS...DANGEROUS CROSS WINDS ARE LIKELY ACROSS THE AREA... MAKING DRIVING CONDITIONS HAZARDOUS FOR HIGH PROFILE VEHICLES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH OR GREATER ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ CAZ044-045-272200- /O.CON.KLOX.WI.Y.0062.000000T0000Z-111027T2200Z/ VENTURA COUNTY INTERIOR VALLEYS-VENTURA COUNTY COASTAL VALLEYS- INCLUDING THE CITIES OF...SANTA PAULA...FILLMORE...OJAI...PIRU... THOUSAND OAKS...NEWBURY PARK...MOORPARK...SIMI VALLEY 913 AM PDT THU OCT 27 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... * WINDS...NORTHEAST 15 TO 25 MPH WITH GUSTS TO 35 MPH. THE STRONGEST WIND GUSTS WILL OCCUR IN THE HILLS AND BELOW CANYONS. * TIMING...WINDS WILL PEAK IN STRENGTH LATE THIS MORNING...THEN DIMINISH THIS AFTERNOON. * IMPACTS...DANGEROUS CROSS WINDS ARE LIKELY ACROSS THE AREA... MAKING DRIVING CONDITIONS HAZARDOUS FOR HIGH PROFILE VEHICLES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH OR GREATER ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ CAZ088-272200- /O.CON.KLOX.WI.Y.0062.000000T0000Z-111027T2200Z/ SANTA CLARITA VALLEY- INCLUDING THE CITIES OF...SANTA CLARITA...NEWHALL...VALENCIA 913 AM PDT THU OCT 27 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... * WINDS...NORTHEAST 15 TO 25 MPH WITH GUSTS TO 35 MPH. THE STRONGEST WIND GUSTS WILL OCCUR BELOW CANYONS. * TIMING...WINDS WILL PEAK IN STRENGTH LATE THIS MORNING...THEN DIMINISH THIS AFTERNOON. * IMPACTS...DANGEROUS CROSS WINDS ARE LIKELY ACROSS THE AREA... MAKING DRIVING CONDITIONS HAZARDOUS FOR HIGH PROFILE VEHICLES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH OR GREATER ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ CAZ547-272200- /O.CON.KLOX.WI.Y.0062.000000T0000Z-111027T2200Z/ LOS ANGELES COUNTY SAN FERNANDO VALLEY- INCLUDING THE CITIES OF...WOODLAND HILLS...NORTHRIDGE...BURBANK... UNIVERSAL CITY 913 AM PDT THU OCT 27 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... * WINDS...NORTHEAST 15 TO 25 MPH WITH GUSTS TO 35 MPH. THE STRONGEST WINDS GUSTS ARE EXPECTED ACROSS NORTHERN AND WESTERN PORTIONS. * TIMING...WINDS WILL PEAK IN STRENGTH LATE THIS MORNING...THEN DIMINISH THIS AFTERNOON. * IMPACTS...DANGEROUS CROSS WINDS ARE LIKELY ACROSS THE AREA... MAKING DRIVING CONDITIONS HAZARDOUS FOR HIGH PROFILE VEHICLES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH OR GREATER ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ TRM
614 WWUS76 KLOX 272222 NPWLOX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 322 PM PDT THU OCT 27 2011 ...SANTA ANA WINDS TO SUBSIDE THIS EVENING... ...AREAS OF FROST POSSIBLE AGAIN TONIGHT ACROSS THE ANTELOPE VALLEY...CUYAMA VALLEY...AND INTERIOR VALLEYS OF SAN LUIS OBISPO COUNTY... .SURFACE HIGH PRESSURE IN THE GREAT BASIN WILL CONTINUE TO WEAKEN THIS EVENING. AS A RESULT...WINDS WILL CONTINUE TO SUBSIDE BUT LINGER WITH GUSTS TO AS MUCH AS 30 MPH THROUGH AND BELOW CANYONS OF BOTH LOS ANGELES AND VENTURA COUNTIES. THE COMBINATION OF A DRY AND COLD AIRMASS OVER INTERIOR SECTIONS WILL LEAD TO ANOTHER ROUND OF SUB FREEZING TEMPERATURES IN WIND SHELTERED AREAS WITH AREAS OF FROST LIKELY TONIGHT FOR PORTIONS OF THE ANTELOPE VALLEY...THE CUYUMA VALLEY...AND INTERIOR SAN LUIS OBISPO COUNTY. CAZ044>046-053-054-088-547-272330- /O.EXP.KLOX.WI.Y.0062.000000T0000Z-111027T2200Z/ VENTURA COUNTY INTERIOR VALLEYS-VENTURA COUNTY COASTAL VALLEYS- SANTA MONICA MOUNTAINS RECREATIONAL AREA-VENTURA COUNTY MOUNTAINS- LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE- SANTA CLARITA VALLEY-LOS ANGELES COUNTY SAN FERNANDO VALLEY- INCLUDING THE CITIES OF...SANTA PAULA...FILLMORE...OJAI...PIRU... THOUSAND OAKS...NEWBURY PARK...MOORPARK...SIMI VALLEY...TOPANGA... LOCKWOOD VALLEY...MOUNT PINOS...ACTON...MOUNT WILSON...SANDBERG... SANTA CLARITA...NEWHALL...VALENCIA...WOODLAND HILLS... NORTHRIDGE...BURBANK...UNIVERSAL CITY 322 PM PDT THU OCT 27 2011 ...WIND ADVISORY HAS EXPIRED... WINDS HAVE BEGUN TO SUBSIDE AND ARE NO LONGER EXPECTED TO REACH ADVISORY CRITERIA. THUS THE ADVISORY HAS BEEN ALLOWED TO EXPIRE. $$ CAZ059-280630- /O.UPG.KLOX.FZ.A.0001.111028T0800Z-111028T1600Z/ /O.EXA.KLOX.FR.Y.0007.111028T0800Z-111028T1600Z/ ANTELOPE VALLEY- INCLUDING THE CITIES OF...LANCASTER...PALMDALE 322 PM PDT THU OCT 27 2011 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM PDT FRIDAY... THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 1 AM TO 9 AM PDT FRIDAY. THE FREEZE WATCH IS NO LONGER IN EFFECT. * TEMPERATURES...TEMPERATURES ARE EXPECTED TO DROP TO BETWEEN 28 TO 32 DEGREES ACROSS WIND SHELTERED LOCATIONS. * TIMING...TEMPERATURES BETWEEN 28 TO 32 DEGREES WILL DEVELOP AFTER MIDNIGHT TONIGHT AND CONTINUE UNTIL AS LATE AS 9 AM PDT FRIDAY MORNING. * IMPACTS...THE COLD TEMPERATURES COULD RESULT IN DAMAGE TO CROPS AND SENSITIVE PLANTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ CAZ037-038-280630- /O.CON.KLOX.FR.Y.0007.111028T0800Z-111028T1600Z/ SAN LUIS OBISPO COUNTY INTERIOR VALLEYS-CUYAMA VALLEY- INCLUDING THE CITIES OF...PASO ROBLES...ATASCADERO...CUYAMA 322 PM PDT THU OCT 27 2011 ...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 9 AM PDT FRIDAY... * TEMPERATURES...TEMPERATURES ARE EXPECTED TO DROP TO BETWEEN 28 TO 32 DEGREES ACROSS WIND SHELTERED LOCATIONS. * TIMING...TEMPERATURES BETWEEN 28 TO 32 DEGREES WILL DEVELOP AFTER MIDNIGHT TONIGHT AND CONTINUE UNTIL AS LATE AS 9 AM PDT FRIDAY MORNING. * IMPACTS...THE COLD TEMPERATURES COULD RESULT IN DAMAGE TO CROPS AND SENSITIVE PLANTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ TRM
924 WWUS76 KLOX 280626 NPWLOX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 1126 PM PDT THU OCT 27 2011 ...AREAS OF FROST EXPECTED ACROSS THE ANTELOPE VALLEY...CUYAMA VALLEY...AND INTERIOR VALLEYS OF SAN LUIS OBISPO COUNTY THROUGH FRIDAY MORNING... .A DRY AND COLD AIR MASS IN PLACE OVER THE INTERIOR SECTIONS OVER SOUTHWEST CALIFORNIA WILL CONTINUE SUB FREEZING TEMPERATURES IN WIND SHELTERED AREAS. AREAS OF FROST LIKELY TONIGHT FOR PORTIONS OF THE ANTELOPE VALLEY...THE CUYAMA VALLEY...AND INTERIOR SAN LUIS OBISPO COUNTY. CAZ059-281600- /O.CON.KLOX.FR.Y.0007.111028T0800Z-111028T1600Z/ ANTELOPE VALLEY- INCLUDING THE CITIES OF...LANCASTER...PALMDALE 1126 PM PDT THU OCT 27 2011 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT FRIDAY... * TEMPERATURES...TEMPERATURES ARE EXPECTED TO DROP TO BETWEEN 28 TO 32 DEGREES ACROSS WIND SHELTERED LOCATIONS. * TIMING...TEMPERATURES BETWEEN 28 TO 32 DEGREES WILL DEVELOP AFTER MIDNIGHT TONIGHT AND CONTINUE UNTIL AS LATE AS 9 AM PDT FRIDAY MORNING. * IMPACTS...THE COLD TEMPERATURES COULD RESULT IN DAMAGE TO CROPS AND SENSITIVE PLANTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ CAZ037-038-281600- /O.CON.KLOX.FR.Y.0007.111028T0800Z-111028T1600Z/ SAN LUIS OBISPO COUNTY INTERIOR VALLEYS-CUYAMA VALLEY- INCLUDING THE CITIES OF...PASO ROBLES...ATASCADERO...CUYAMA 1126 PM PDT THU OCT 27 2011 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT FRIDAY... * TEMPERATURES...TEMPERATURES ARE EXPECTED TO DROP TO BETWEEN 28 TO 32 DEGREES ACROSS WIND SHELTERED LOCATIONS. * TIMING...TEMPERATURES BETWEEN 28 TO 32 DEGREES WILL DEVELOP AFTER MIDNIGHT TONIGHT AND CONTINUE UNTIL AS LATE AS 9 AM PDT FRIDAY MORNING. * IMPACTS...THE COLD TEMPERATURES COULD RESULT IN DAMAGE TO CROPS AND SENSITIVE PLANTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ HALL
573 WWUS76 KLOX 281024 NPWLOX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 324 AM PDT FRI OCT 28 2011 ...AREAS OF FROST EXPECTED ACROSS THE ANTELOPE VALLEY...CUYAMA VALLEY...AND INTERIOR VALLEYS OF SAN LUIS OBISPO COUNTY THROUGH THIS MORNING... .A DRY AND COLD AIR MASS IN PLACE OVER THE INTERIOR SECTIONS OVER SOUTHWEST CALIFORNIA WILL CONTINUE SUB FREEZING TEMPERATURES IN WIND SHELTERED AREAS. AREAS OF FROST LIKELY EARLY THIS MORNING FOR PORTIONS OF THE ANTELOPE VALLEY...THE CUYAMA VALLEY...AND INTERIOR SAN LUIS OBISPO COUNTY. CAZ059-281600- /O.CON.KLOX.FR.Y.0007.000000T0000Z-111028T1600Z/ ANTELOPE VALLEY- INCLUDING THE CITIES OF...LANCASTER...PALMDALE 324 AM PDT FRI OCT 28 2011 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * TIMING...TEMPERATURES BETWEEN 28 TO 32 DEGREES WILL PERSIST UNTIL AS LATE AS 9 AM PDT THIS MORNING. * IMPACTS...THE COLD TEMPERATURES COULD RESULT IN DAMAGE TO CROPS AND SENSITIVE PLANTS AND HARMFUL TO PETS LEFT OUTDOORS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. ANIMALS SHOULD BE KEPT INSIDE. && $$ CAZ037-038-281600- /O.CON.KLOX.FR.Y.0007.000000T0000Z-111028T1600Z/ SAN LUIS OBISPO COUNTY INTERIOR VALLEYS-CUYAMA VALLEY- INCLUDING THE CITIES OF...PASO ROBLES...ATASCADERO...CUYAMA 324 AM PDT FRI OCT 28 2011 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * TIMING...TEMPERATURES BETWEEN 28 TO 32 DEGREES WILL PERSIST UNTIL AS LATE AS 9 AM PDT THIS MORNING. * IMPACTS...THE COLD TEMPERATURES COULD RESULT IN DAMAGE TO CROPS AND SENSITIVE PLANTS AND HARMFUL TO PETS LEFT OUTDOORS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. ANIMALS SHOULD BE KEPT INSIDE. && $$ KAPLAN
404 WWUS76 KLOX 281550 NPWLOX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 850 AM PDT FRI OCT 28 2011 CAZ059-281700- /O.EXP.KLOX.FR.Y.0007.000000T0000Z-111028T1600Z/ ANTELOPE VALLEY- INCLUDING THE CITIES OF...LANCASTER...PALMDALE 850 AM PDT FRI OCT 28 2011 ...FROST ADVISORY WILL EXPIRE AT 9 AM PDT THIS MORNING... TEMPERATURES WILL RISE INTO THE MID 30S OR HIGHER THROUGHOUT THE AREA BY 9 AM THIS MORNING. $$ CAZ037-038-281700- /O.EXP.KLOX.FR.Y.0007.000000T0000Z-111028T1600Z/ SAN LUIS OBISPO COUNTY INTERIOR VALLEYS-CUYAMA VALLEY- INCLUDING THE CITIES OF...PASO ROBLES...ATASCADERO...CUYAMA 850 AM PDT FRI OCT 28 2011 ...FROST ADVISORY WILL EXPIRE AT 9 AM PDT THIS MORNING... TEMPERATURES WILL RISE INTO THE MID 30S OR HIGHER THROUGHOUT THE AREA BY 9 AM THIS MORNING. $$
What forecasters said that day
The local office's own words before this frost advisory went out, 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 this frost advisory went out at Oct 27, 2:45 AM PDT, 19 minutes earlier.
Area forecast discussion, Oct 27, 2:45 AM PDT, 19 minutes before
SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 245 AM PDT THU OCT 27 2011 .SYNOPSIS... SURFACE HIGH PRESSURE OVER THE GREAT BASIN WILL PRODUCE MODERATE SANTA ANA WINDS TODAY ACROSS THE MOUNTAINS AND VALLEYS OF VENTURA AND LOS ANGELES COUNTIES. FOR THE WEEKEND...A WEAK OFFSHORE FLOW WILL CONTINUE...RESULTING IN WARMING TEMPERATURES AND CONTINUED DRY CONDITIONS. SOME COOLING IS EXPECTED EARLY NEXT WEEK. && .SHORT TERM (TODAY-SAT)...OVERALL...00Z MODELS IN VERY GOOD SYNOPTIC AGREEMENT. AT UPPER LEVELS...TROUGH CURRENTLY OVER ARIZONA WILL MOVE EASTWARD THROUGH THE PERIOD WITH A RIDGE BUILDING OVER THE DISTRICT. NEAR THE SURFACE...MODERATE OFFSHORE GRADIENTS THIS MORNING WITH APPROXIMATELY A 1028 MB HIGH PRESSURE OVER THE GREAT BASIN. THIS SURFACE HIGH PRESSURE WILL WEAKEN AND SHIFT EASTWARD THROUGH FRIDAY AND SATURDAY...RESULTING IN WEAK OFFSHORE FLOW NIGHT/MORNING HOURS AND WEAK ONSHORE FLOW IN THE AFTERNOON/EVENING HOURS. FORECAST WISE...MAIN ISSUE CONTINUES TO BE OFFSHORE WINDS. MODELS INDICATE LAX-DAG GRADIENT PEAKING AT -4.8 MB THIS MORNING...WHICH IS A DECENT OFFSHORE GRADIENT. ABOVE THE SURFACE...THERE IS SOME GOOD WIND SUPPORT. SO...WILL EXPECT THE NORTHEAST WINDS TO INCREASE THIS MORNING...PEAKING IN STRENGTH BETWEEN SUNRISE AND NOON BEFORE DIMINISHING THIS AFTERNOON. CURRENTLY...WIND ADVISORIES ARE IN EFFECT FOR THE LA/VENTURA MOUNTAINS (INCLUDING THE SANTA MONICAS) THE VENTURA VALLEYS...AND THE SAN FERNANDO AND SANTA CLARITA VALLEYS. CURRENT WIND OBS ARE STARTING TO INCREASE...SO ADVISORIES LOOK GOOD AS GRADIENTS AND UPPER SUPPORT INCREASE THIS MORNING. WILL ALSO LIKELY EXPERIENCE SOME GUSTY WINDS ACROSS THE LA/VENTURA COASTAL PLAIN...BUT EXPECT THESE WINDS TO REMAIN BELOW ADVISORY LEVELS. BY LATE THIS AFTERNOON...THE SURFACE GRADIENTS RELAX AND UPPER SUPPORT WANES...SO WINDS SHOULD DIMINISH NOTICEABLY. HOWEVER...EVEN WITH WEAKER OFFSHORE FLOW INGREDIENTS FRIDAY AND SATURDAY...THERE WILL STILL BE SOME LOCALLY GUSTY NORTHEAST WINDS THROUGH/BELOW PASSES AND CANYONS OF VENTURA AND LOS ANGELES COUNTIES. SECONDARY CONCERN IN THE SHORT IS TEMPS...SPECIFICALLY LOW TEMPS THIS MORNING AND FRIDAY MORNING. CURRENT TEMP OBS INDICATE INTERIOR SLO/SBA COUNTIES AS WELL AS THE ANTELOPE VALLEY ARE DROPPING BELOW 32 DEGREES...SO CURRENT FROST ADVISORIES FOR THIS MORNING LOOK FINE. FOR TONIGHT/FRIDAY MORNING...THE AIR MASS WILL REMAIN JUST AS DRY AND CHILLY. SO...TEMPS ACROSS INTERIOR SLO/SBA COUNTIES AND THE ANTELOPE VALLEY WILL LIKELY BE JUST AS COLD AS THIS MORNING...OR EVEN SLIGHTLY COLDER. SO...WILL ISSUE FROST ADVISORIES ONCE AGAIN TONIGHT FOR INTERIOR SLO/SBA COUNTIES. THERE IS ALREADY A FREEZE WATCH IN EFFECT TONIGHT/FRIDAY MORNING FOR THE ANTELOPE VALLEY. WILL LET THE DAY SHIFT LOOKS AT NEW MODEL GUIDANCE AND MAKE THE DECISION BETWEEN FROST OR FREEZE PRODUCT TONIGHT FOR THE ANTELOPE VALLEY. AS FOR HIGH TEMPS...THE CONTINUING OFFSHORE FLOW AND BUILDING UPPER LEVEL RIDGE WILL RESULT IN A NICE WARMUP THROUGH SATURDAY. TODAY THE COASTAL PLAIN WILL BE THE WARMEST AREA (AS COLD ADVECTION KEEPS INLAND AREAS A BIT COOLER). HOWEVER FOR FRIDAY/SATURDAY...COLD ADVECTION EFFECTS WANE...AND ALL AREAS SHOULD EXHIBIT A NICE WARMING TREND...WITH WIDESPREAD 80S ACROSS THE COASTS/VALLEYS BY SATURDAY. .LONG TERM (SUN-WED)...FOR THE EXTENDED...MODELS SOLUTIONS DIVERGE THROUGH THE PERIOD...MAKING FOR A RATHER LOW CONFIDENCE FORECAST. AT UPPER LEVELS...MODELS AGREE WITH LITTLE CHANGE ON SUNDAY. HOWEVER FOR MONDAY THROUGH WEDNESDAY...THE STORIES DIVERGE. THE GFS INDICATES SOME WEAK TROUGHING OVER THE WESTERN STATES MONDAY THROUGH WEDNESDAY AS A COUPLE OF DISTURBANCES MOVE ACROSS THE PACIFIC NORTHWEST. ON THE OTHER HAND...THE ECMWF (AND TO A LESSER EXTENT THE CANADIAN) DROPS A TROUGH ACROSS THE GREAT BASIN TUESDAY/WEDNESDAY. NEAR THE SURFACE...THE GFS INDICATES A GRADUAL INCREASE IN ONSHORE FLOW THROUGH THE PERIOD...WHILE THE ECMWF/CANADIAN DEVELOP ANOTHER ROUND OF OFFSHORE FLOW TUESDAY/WEDNESDAY AS SURFACE HIGH PRESSURE BUILDS INTO THE GREAT BASIN. FORECAST WISE...SUNDAY SEEMS RATHER BENIGN WITH CONTINUED CLEAR SKIES....WEAK SURFACE FLOW AND SLIGHTLY COOLER TEMPS. FOR MONDAY THROUGH WEDNESDAY TIME FRAME...FORECAST HAS A RATHER LARGE RANGE OF POSSIBILITIES FROM A MODERATE SANTA ANA WIND EVENT (ECMWF/CANADIAN) TO A GRADUAL COOLING TREND WITH WEAK ONSHORE FLOW (GFS). WITH SUCH A VAST ARRAY OF POSSIBILITIES...WILL NOT TINKER WITH INHERITED FORECAST TOO MUCH. WILL KEEP CURRENT GRADUAL COOLING TREND WITH SOME INCREASE IN COASTAL CLOUDS. HOPEFULLY...MODELS WILL START TO ALIGN BETTER THE NEXT FEW DAYS. && .AVIATION...27/1130Z... WILL BE UPDATED WITH 12Z TAF PACKAGE. && .FIRE... RED FLAG WARNINGS REMAIN IN EFFECT UNTIL 3 PM THURSDAY FOR ALL MOUNTAINS AND VALLEYS OF LOS ANGELES AND VENTURA COUNTIES (EXCLUDING THE SAN GABRIEL VALLEY). OFFSHORE WINDS WILL CONTINUE TO STRENGTHEN TODAY...PEAKING BETWEEN SUNRISE AND NOON...WHILE RELATIVE HUMIDITY WILL CONTINUE TO REMAIN VERY LOW (IN THE SINGLE DIGITS). ALREADY SEVERAL SITES HAVE MET OR EXCEEDED RED FLAG THRESHOLDS (CAMP 9...MILL CREEK...WARM SPRINGS... CHILAO AND SAUGUS). SO...WITH INCREASE IN OFFSHORE WINDS AND CONTINUED DRY AIR MASS...CURRENT RED FLAG WARNINGS LOOKS GOOD EARLY THIS MORNING AS OFFSHORE WINDS WILL SURFACE INTO THE VALLEYS AND SANTA MONICAS AROUND SUNRISE. OFFSHORE WINDS WILL GRADUALLY DIMINISH THIS AFTERNOON...BUT A WEAK OFFSHORE FLOW COMPONENT WILL LIKELY MAINTAIN WARM AND VERY DRY CONDITIONS THROUGH THE WEEKEND. THERE IS A HIGH LIKELIHOOD THAT MANY MOUNTAIN AND VALLEY LOCATIONS WILL SEE EXTENDED PERIODS OF SINGLE DIGIT HUMIDITIES DURING THIS TIME. DEPENDING ON THE STRENGTH OF THE OFFSHORE WINDS FRIDAY INTO SATURDAY...THE RED FLAG WARNINGS MAY NEED TO BE EXPANDED IN TIME FOR SOME LOCATIONS. && .LOX WATCHES/WARNINGS/ADVISORIES... RED FLAG WARNING (SEE LAXRFWLOX). FREEZE WATCH (SEE LAXNPWLOX). WIND ADVISORY (SEE LAXNPWLOX). FROST ADVISORY (SEE LAXNPWLOX). && PUBLIC...THOMPSON AVIATION...HALL SYNOPSIS...RAT WWW.WEATHER.GOV/LOSANGELES
Hazardous weather outlook, Oct 26, 6:00 AM PDT, 21 hours 4 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 600 AM PDT WED OCT 26 2011 CAZ034>041-044>046-051>054-059-087-088-547-548-271300- 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- 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- LOS ANGELES COUNTY SAN FERNANDO VALLEY- LOS ANGELES COUNTY SAN GABRIEL VALLEY- 600 AM PDT WED OCT 26 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWESTERN CALIFORNIA. .DAY ONE... TODAY A COLD AND DRY AIR MASS SETTLING INTO THE GREAT BASIN WILL BRING OFFSHORE WINDS TO THE AREA STARTING TONIGHT...WITH COLD OVERNIGHT TEMEPERATURES FORECAST ACROSS THE INTERIOR TONIGHT. AS THE COLD AIR MASS IS FORCED TO RISE OVER THE SOUTHERN CALIFORNIA MOUNTAINS...THE AIR MASS WILL COMPRESS...WARM...AND DRY AND BRING A PERIOD OF CRITICAL FIRE WEATHER CONDITIONS ACROSS PORTIONS OF SOUTHWEST CALIFORNIA. RESIDENTS OF THE AREA SHOULD ACT NOW WITH IMPENDING WEATHER CHANGE. * RED FLAG WARNING...........SEE WWUS86 KLOX - RFWLOX FOR DETAILS * * WIND ADVISORY..............SEE WWUS76 KLOX - NPWLOX FOR DETAILS * * FROST ADVISORY.............SEE WWUS76 KLOX - NPWLOX FOR DETAILS * .DAYS TWO THROUGH SEVEN... THURSDAY THROUGH TUESDAY A COLD AND DRY AIR MASS OVER THE GREAT BASIN WILL CONTINUE TO PRODUCE AN OFFSHORE FLOW PATTERN ACROSS THE AREA. COLD OVERNIGHT TEMEPERATURES ARE FORECAST TO OCCUR AGAIN ON THURSDAY AND FRIDAY. WITH DRY AND WINDY AIR MASS IN PLACE...A PERIOD OF CRITICAL FIRE WEATHER CONDITIONS ACROSS PORTIONS OF SOUTHWEST CALIFORNIA. * RED FLAG WARNING...........SEE WWUS86 KLOX - RFWLOX FOR DETAILS * * FREEZE WATCH...............SEE WWUS76 KLOX - NPWLOX FOR DETAILS * * WIND ADVISORY..............SEE WWUS76 KLOX - NPWLOX FOR DETAILS * * FROST ADVISORY.............SEE WWUS76 KLOX - NPWLOX FOR DETAILS * .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. HALL
Nearby
Frost Advisories in California, 2011Every frost advisory in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.