Alert archive / California / Frost Advisories in 2012
Frost Advisory 21, NWS Los Angeles, CA
NWS Los Angeles, CA issued this frost advisory at Dec 29, 2012, 8:12 PM PST for Los Angeles County, California. It took effect at Dec 30, 2012, 12:00 AM PST. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Dec 29, 2012, 8:12 PM PST (04:12 UTC)
- In effect from
- Dec 30, 2012, 12:00 AM PST
- Expired
- Dec 30, 2012, 9:00 AM PST
- In force
- 9 hr
- Issued by
- NWS Los Angeles, CA
County Los Angeles County, CA
The radar
The Santa Ana Mts radar (KSOX), 71 km from the middle of the area, began a volume at 04:13 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
San Diego, CA (KNKX), launched 00:00Z, 4.2 hours before the alert went out and 184 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
- 63 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 774 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
811 WWUS76 KLOX 300412 NPWLOX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 812 PM PST SAT DEC 29 2012 CAZ036-044-301215- /O.NEW.KLOX.FR.Y.0021.121230T0800Z-121230T1700Z/ SANTA YNEZ VALLEY-VENTURA COUNTY INTERIOR VALLEYS- INCLUDING THE CITIES OF...SANTA YNEZ...SOLVANG...SANTA PAULA... FILLMORE...OJAI...PIRU 812 PM PST SAT DEC 29 2012 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SUNDAY... THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A FROST ADVISORY FOR THE VENTURA COUNTY AND SANTA YNEZ VALLEY. THIS ADVISORY IS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SUNDAY. * TEMPERATURES...TEMPERATURES WILL FALL TO BETWEEN 28 AND 32 DEGREES LATE TONIGHT AND REMAIN BELOW FREEZING THROUGH MID- MORNING SUNDAY. * IMPACTS...FROST CAN CAUSE DAMAGE TO SENSITIVE PLANTS IF LEFT UNCOVERED OUTDOORS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ HALL
4 follow-up statements
915 WWUS76 KLOX 300428 NPWLOX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 828 PM PST SAT DEC 29 2012 CAZ034-035-039-040-300800- /O.EXA.KLOX.FR.Y.0021.121230T0800Z-121230T1700Z/ SAN LUIS OBISPO COUNTY CENTRAL COAST- SANTA BARBARA COUNTY CENTRAL COAST- SANTA BARBARA COUNTY SOUTH COAST-VENTURA COUNTY COAST- INCLUDING THE CITIES OF...SAN LUIS OBISPO...PISMO BEACH... MORRO BAY...CAMBRIA...SAN SIMEON...SANTA MARIA...LOMPOC... VANDENBERG...SANTA BARBARA...MONTECITO...CARPINTERIA...VENTURA... OXNARD...CAMARILLO 828 PM PST SAT DEC 29 2012 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SUNDAY... THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SUNDAY. * TEMPERATURES...TEMPERATURES WILL FALL TO BETWEEN 28 AND 32 DEGREES LATE TONIGHT AND REMAIN BELOW FREEZING THROUGH MID- MORNING SUNDAY. * IMPACTS...FROST CAN CAUSE DAMAGE TO SENSITIVE PLANTS IF LEFT UNCOVERED OUTDOORS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ CAZ036-044-300800- /O.CON.KLOX.FR.Y.0021.121230T0800Z-121230T1700Z/ SANTA YNEZ VALLEY-VENTURA COUNTY INTERIOR VALLEYS- INCLUDING THE CITIES OF...SANTA YNEZ...SOLVANG...SANTA PAULA... FILLMORE...OJAI...PIRU 828 PM PST SAT DEC 29 2012 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SUNDAY... * TEMPERATURES...TEMPERATURES WILL FALL TO BETWEEN 28 AND 32 DEGREES LATE TONIGHT AND REMAIN BELOW FREEZING THROUGH MID- MORNING SUNDAY. * IMPACTS...FROST CAN CAUSE DAMAGE TO SENSITIVE PLANTS IF LEFT UNCOVERED OUTDOORS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ HALL
381 WWUS76 KLOX 300742 NPWLOX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 1142 PM PST SAT DEC 29 2012 CAZ045-046-088-547-548-301545- /O.EXA.KLOX.FR.Y.0021.121230T0800Z-121230T1700Z/ VENTURA COUNTY COASTAL VALLEYS- SANTA MONICA MOUNTAINS RECREATIONAL AREA-SANTA CLARITA VALLEY- LOS ANGELES COUNTY SAN FERNANDO VALLEY- LOS ANGELES COUNTY SAN GABRIEL VALLEY- INCLUDING THE CITIES OF...THOUSAND OAKS...NEWBURY PARK... MOORPARK...SIMI VALLEY...TOPANGA...SANTA CLARITA...NEWHALL... VALENCIA...WOODLAND HILLS...NORTHRIDGE...BURBANK... UNIVERSAL CITY...PASADENA...SAN GABRIEL...POMONA 1142 PM PST SAT DEC 29 2012 ...FROST ADVISORY IN EFFECT UNTIL 9 AM PST SUNDAY... THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT UNTIL 9 AM PST SUNDAY. * TEMPERATURES...TEMPERATURES WILL FALL TO AROUND 32 DEGREES LATE TONIGHT AND REMAIN NEAR FREEZING THROUGH MID MORNING SUNDAY. IN SOME OF THE COLDEST LOCATIONS...TEMPERATURES WILL DROP TO BETWEEN 28 AND 30 DEGREES FOR AN HOUR OR TWO. * IMPACTS...FROST CAN CAUSE DAMAGE TO SENSITIVE PLANTS IF LEFT UNCOVERED OUTDOORS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ CAZ034>036-039-040-044-301545- /O.CON.KLOX.FR.Y.0021.121230T0800Z-121230T1700Z/ SAN LUIS OBISPO COUNTY CENTRAL COAST- SANTA BARBARA COUNTY CENTRAL COAST-SANTA YNEZ VALLEY- SANTA BARBARA COUNTY SOUTH COAST-VENTURA COUNTY COAST- VENTURA COUNTY INTERIOR VALLEYS- INCLUDING THE CITIES OF...SAN LUIS OBISPO...PISMO BEACH... MORRO BAY...CAMBRIA...SAN SIMEON...SANTA MARIA...LOMPOC... VANDENBERG...SANTA YNEZ...SOLVANG...SANTA BARBARA...MONTECITO... CARPINTERIA...VENTURA...OXNARD...CAMARILLO...SANTA PAULA... FILLMORE...OJAI...PIRU 1142 PM PST SAT DEC 29 2012 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST SUNDAY... * TEMPERATURES...TEMPERATURES WILL FALL TO BETWEEN 28 AND 32 DEGREES LATE TONIGHT AND REMAIN BELOW FREEZING THROUGH MID- MORNING SUNDAY. * IMPACTS...FROST CAN CAUSE DAMAGE TO SENSITIVE PLANTS IF LEFT UNCOVERED OUTDOORS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$
843 WWUS76 KLOX 301530 NPWLOX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 730 AM PST SUN DEC 30 2012 CAZ034>036-039-044-301730- /O.NEW.KLOX.FR.Y.0022.121231T0800Z-121231T1700Z/ /O.CON.KLOX.FR.Y.0021.000000T0000Z-121230T1700Z/ SAN LUIS OBISPO COUNTY CENTRAL COAST- SANTA BARBARA COUNTY CENTRAL COAST-SANTA YNEZ VALLEY- SANTA BARBARA COUNTY SOUTH COAST-VENTURA COUNTY INTERIOR VALLEYS- INCLUDING THE CITIES OF...SAN LUIS OBISPO...PISMO BEACH... MORRO BAY...CAMBRIA...SAN SIMEON...SANTA MARIA...LOMPOC... VANDENBERG...SANTA YNEZ...SOLVANG...SANTA BARBARA...MONTECITO... CARPINTERIA...SANTA PAULA...FILLMORE...OJAI...PIRU 730 AM PST SUN DEC 30 2012 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST MONDAY... THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST MONDAY. * TEMPERATURES AND TIMING..TEMPERATURES WILL REMAIN NEAR OR BELOW FREEZING THROUGH MID-MORNING TODAY. AREAS OF FROST ARE EXPECTED AGAIN LATE TONIGHT INTO MONDAY MORNING...WITH TEMPERATURES FALLING TO BETWEEN 28 AND 32 DEGREES. * IMPACTS...FROST CAN CAUSE DAMAGE TO SENSITIVE PLANTS IF LEFT UNCOVERED OUTDOORS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ CAZ045-046-088-547-548-301730- /O.NEW.KLOX.FR.Y.0022.121231T0800Z-121231T1700Z/ /O.CON.KLOX.FR.Y.0021.000000T0000Z-121230T1700Z/ VENTURA COUNTY COASTAL VALLEYS- SANTA MONICA MOUNTAINS RECREATIONAL AREA-SANTA CLARITA VALLEY- LOS ANGELES COUNTY SAN FERNANDO VALLEY- LOS ANGELES COUNTY SAN GABRIEL VALLEY- INCLUDING THE CITIES OF...THOUSAND OAKS...NEWBURY PARK... MOORPARK...SIMI VALLEY...TOPANGA...SANTA CLARITA...NEWHALL... VALENCIA...WOODLAND HILLS...NORTHRIDGE...BURBANK... UNIVERSAL CITY...PASADENA...SAN GABRIEL...POMONA 730 AM PST SUN DEC 30 2012 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST MONDAY... THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST MONDAY. * TEMPERATURES AND TIMING...TEMPERATURES WILL REMAIN NEAR FREEZING THROUGH MID-MORNING TODAY. AREAS OF FROST ARE EXPECTED AGAIN LATE TONIGHT INTO MONDAY MORNING...WITH TEMPERATURES FALLING TO NEAR OR BELOW 32 DEGREES. * IMPACTS...FROST CAN CAUSE DAMAGE TO SENSITIVE PLANTS IF LEFT UNCOVERED OUTDOORS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ CAZ040-301730- /O.NEW.KLOX.FR.Y.0022.121231T0800Z-121231T1700Z/ /O.CON.KLOX.FR.Y.0021.000000T0000Z-121230T1700Z/ VENTURA COUNTY COAST- INCLUDING THE CITIES OF...VENTURA...OXNARD...CAMARILLO 730 AM PST SUN DEC 30 2012 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST MONDAY... THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST MONDAY. * TEMPERATURES AND TIMING...TEMPERATURES WILL REMAIN NEAR FREEZING THROUGH MID-MORNING TODAY. AREAS OF FROST ARE EXPECTED AGAIN LATE TONIGHT INTO MONDAY MORNING...WITH TEMPERATURES FALLING TO BETWEEN 28 AND 32 DEGREES. * IMPACTS...FROST CAN CAUSE DAMAGE TO SENSITIVE PLANTS IF LEFT UNCOVERED OUTDOORS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$
827 WWUS76 KLOX 301653 NPWLOX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 853 AM PST SUN DEC 30 2012 CAZ034>036-039-044-310100- /O.EXP.KLOX.FR.Y.0021.000000T0000Z-121230T1700Z/ /O.CON.KLOX.FR.Y.0022.121231T0800Z-121231T1700Z/ SAN LUIS OBISPO COUNTY CENTRAL COAST- SANTA BARBARA COUNTY CENTRAL COAST-SANTA YNEZ VALLEY- SANTA BARBARA COUNTY SOUTH COAST-VENTURA COUNTY INTERIOR VALLEYS- INCLUDING THE CITIES OF...SAN LUIS OBISPO...PISMO BEACH... MORRO BAY...CAMBRIA...SAN SIMEON...SANTA MARIA...LOMPOC... VANDENBERG...SANTA YNEZ...SOLVANG...SANTA BARBARA...MONTECITO... CARPINTERIA...SANTA PAULA...FILLMORE...OJAI...PIRU 853 AM PST SUN DEC 30 2012 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST MONDAY... ...FROST ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING... * TEMPERATURES AND TIMING..AREAS OF FROST ARE EXPECTED AGAIN LATE TONIGHT INTO MONDAY MORNING...WITH TEMPERATURES FALLING TO BETWEEN 28 AND 32 DEGREES. * IMPACTS...FROST CAN CAUSE DAMAGE TO SENSITIVE PLANTS IF LEFT UNCOVERED OUTDOORS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ CAZ045-046-088-547-548-310100- /O.EXP.KLOX.FR.Y.0021.000000T0000Z-121230T1700Z/ /O.CON.KLOX.FR.Y.0022.121231T0800Z-121231T1700Z/ VENTURA COUNTY COASTAL VALLEYS- SANTA MONICA MOUNTAINS RECREATIONAL AREA-SANTA CLARITA VALLEY- LOS ANGELES COUNTY SAN FERNANDO VALLEY- LOS ANGELES COUNTY SAN GABRIEL VALLEY- INCLUDING THE CITIES OF...THOUSAND OAKS...NEWBURY PARK... MOORPARK...SIMI VALLEY...TOPANGA...SANTA CLARITA...NEWHALL... VALENCIA...WOODLAND HILLS...NORTHRIDGE...BURBANK... UNIVERSAL CITY...PASADENA...SAN GABRIEL...POMONA 853 AM PST SUN DEC 30 2012 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST MONDAY... ...FROST ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING... * TEMPERATURES AND TIMING...AREAS OF FROST ARE EXPECTED AGAIN LATE TONIGHT INTO MONDAY MORNING...WITH TEMPERATURES FALLING TO NEAR OR BELOW 32 DEGREES. * IMPACTS...FROST CAN CAUSE DAMAGE TO SENSITIVE PLANTS IF LEFT UNCOVERED OUTDOORS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ CAZ040-310100- /O.EXP.KLOX.FR.Y.0021.000000T0000Z-121230T1700Z/ /O.CON.KLOX.FR.Y.0022.121231T0800Z-121231T1700Z/ VENTURA COUNTY COAST- INCLUDING THE CITIES OF...VENTURA...OXNARD...CAMARILLO 853 AM PST SUN DEC 30 2012 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST MONDAY... ...FROST ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING... * TEMPERATURES AND TIMING...AREAS OF FROST ARE EXPECTED AGAIN LATE TONIGHT INTO MONDAY MORNING...WITH TEMPERATURES FALLING TO BETWEEN 28 AND 32 DEGREES. * IMPACTS...FROST CAN CAUSE DAMAGE TO SENSITIVE PLANTS IF LEFT UNCOVERED OUTDOORS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS IMMINENT. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ HALL
The office that day
Everything else NWS Los Angeles, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 30, 7:30 AM PST | Frost Advisory | LOX | Los Angeles | 26 hr |
| Dec 30, 8:14 AM PST | Small Craft Advisory | LOX | 19 hr |
Nearby
Frost Advisories in California, 2012Every frost advisory in 2012
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; radar from the NEXRAD Level II archive.