Alert archive / California / Wind Advisories in 2021
Wind Advisory 17, NWS Los Angeles, CA
NWS Los Angeles, CA issued this wind advisory at Feb 3, 2021, 2:06 PM PST for Los Angeles County, California. It took effect at Feb 4, 2021, 6:00 AM PST. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Feb 3, 2021, 2:06 PM PST (22:06 UTC)
- In effect from
- Feb 4, 2021, 6:00 AM PST
- Expired
- Feb 4, 2021, 3:00 PM 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 22:05 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 12:00Z, 10.1 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1642 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- -46 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
698 WWUS76 KLOX 032206 NPWLOX URGENT - WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 206 PM PST Wed Feb 3 2021 CAZ044>046-088-041130- /O.NEW.KLOX.WI.Y.0017.210204T1400Z-210204T2300Z/ Ventura County Interior Valleys-Ventura County Coastal Valleys- Santa Monica Mountains Recreational Area-Santa Clarita Valley- Including the cities of Santa Paula, Fillmore, Ojai, Piru, Thousand Oaks, Simi Valley, Moorpark, Newbury Park, Santa Clarita, Newhall, and Valencia 206 PM PST Wed Feb 3 2021 ...WIND ADVISORY IN EFFECT FROM 6 AM TO 3 PM PST THURSDAY... * WHAT...Northeast winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Ventura County Interior Valleys, Ventura County Coastal Valleys, Santa Monica Mountains and Santa Clarita Valley. * WHEN...From 6 AM to 3 PM PST Thursday. * IMPACTS...Gusty winds will blow around unsecured objects and make driving difficult, especially for high profile vehicles. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ547-041130- /O.NEW.KLOX.WI.Y.0017.210204T1400Z-210204T2300Z/ Los Angeles County San Fernando Valley- Including the cities of Woodland Hills, Northridge, Burbank, and Universal City 206 PM PST Wed Feb 3 2021 ...WIND ADVISORY IN EFFECT FROM 6 AM TO 3 PM PST THURSDAY... * WHAT...Northeast winds 15 to 25 mph with gusts up to 40 mph expected. * WHERE...San Fernando Valley, strongest in the northern and western valley, including Chatsworth and Porter Ranch. * WHEN...From 6 AM to 3 PM PST Thursday. * IMPACTS...Gusty winds will blow around unsecured objects and make driving difficult, especially for high profile vehicles. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ053-054-041130- /O.NEW.KLOX.WI.Y.0017.210204T1400Z-210204T2300Z/ Ventura County Mountains- Los Angeles County Mountains excluding the Santa Monica Range- Including the cities of Lockwood Valley, Mount Pinos, Acton, Mount Wilson, and Sandberg 206 PM PST Wed Feb 3 2021 ...WIND ADVISORY IN EFFECT FROM 6 AM TO 3 PM PST THURSDAY... * WHAT...Northeast winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Ventura and Los Angeles County Mountains, strongest in Los Angeles County. * WHEN...From 6 AM to 3 PM PST Thursday. * IMPACTS...Gusty winds will blow around unsecured objects and make driving difficult, especially for high profile vehicles. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ MW
2 follow-up statements
586 WWUS76 KLOX 041412 NPWLOX URGENT - WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 612 AM PST Thu Feb 4 2021 CAZ044>046-088-042300- /O.CON.KLOX.WI.Y.0017.000000T0000Z-210204T2300Z/ Ventura County Interior Valleys-Ventura County Coastal Valleys- Santa Monica Mountains Recreational Area-Santa Clarita Valley- Including the cities of Santa Paula, Fillmore, Ojai, Piru, Thousand Oaks, Simi Valley, Moorpark, Newbury Park, Santa Clarita, Newhall, and Valencia 612 AM PST Thu Feb 4 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST THIS AFTERNOON... * WHAT...Northeast winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Ventura County Interior Valleys, Ventura County Coastal Valleys, Santa Monica Mountains and Santa Clarita Valley. * WHEN...Until 3 PM PST this afternoon. * IMPACTS...Gusty winds will blow around unsecured objects and make driving difficult, especially for high profile vehicles. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ547-042300- /O.CON.KLOX.WI.Y.0017.000000T0000Z-210204T2300Z/ Los Angeles County San Fernando Valley- Including the cities of Woodland Hills, Northridge, Burbank, and Universal City 612 AM PST Thu Feb 4 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST THIS AFTERNOON... * WHAT...Northeast winds 15 to 25 mph with gusts up to 40 mph expected. * WHERE...San Fernando Valley, strongest in the northern and western valley, including Chatsworth and Porter Ranch. * WHEN...Until 3 PM PST this afternoon. * IMPACTS...Gusty winds will blow around unsecured objects and make driving difficult, especially for high profile vehicles. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ053-054-042300- /O.CON.KLOX.WI.Y.0017.000000T0000Z-210204T2300Z/ Ventura County Mountains- Los Angeles County Mountains excluding the Santa Monica Range- Including the cities of Lockwood Valley, Mount Pinos, Acton, Mount Wilson, and Sandberg 612 AM PST Thu Feb 4 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST THIS AFTERNOON... * WHAT...Northeast winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Ventura and Los Angeles County Mountains, strongest in Los Angeles County. * WHEN...Until 3 PM PST this afternoon. * IMPACTS...Gusty winds will blow around unsecured objects and make driving difficult, especially for high profile vehicles. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
999 WWUS76 KLOX 042233 NPWLOX URGENT - WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 233 PM PST Thu Feb 4 2021 CAZ044>046-088-042345- /O.EXP.KLOX.WI.Y.0017.000000T0000Z-210204T2300Z/ Ventura County Interior Valleys-Ventura County Coastal Valleys- Santa Monica Mountains Recreational Area-Santa Clarita Valley- Including the cities of Santa Paula, Fillmore, Ojai, Piru, Thousand Oaks, Simi Valley, Moorpark, Newbury Park, Santa Clarita, Newhall, and Valencia 233 PM PST Thu Feb 4 2021 ...WIND ADVISORY WILL EXPIRE AT 3 PM PST THIS AFTERNOON... Winds have diminished below Advisory levels and the Wind Advisory will be allowed to expire at 3 PM PST. $$ CAZ547-042345- /O.EXP.KLOX.WI.Y.0017.000000T0000Z-210204T2300Z/ Los Angeles County San Fernando Valley- Including the cities of Woodland Hills, Northridge, Burbank, and Universal City 233 PM PST Thu Feb 4 2021 ...WIND ADVISORY WILL EXPIRE AT 3 PM PST THIS AFTERNOON... Winds have diminished below Advisory levels and the Wind Advisory will be allowed to expire at 3 PM PST. $$ CAZ053-054-042345- /O.EXP.KLOX.WI.Y.0017.000000T0000Z-210204T2300Z/ Ventura County Mountains- Los Angeles County Mountains excluding the Santa Monica Range- Including the cities of Lockwood Valley, Mount Pinos, Acton, Mount Wilson, and Sandberg 233 PM PST Thu Feb 4 2021 ...WIND ADVISORY WILL EXPIRE AT 3 PM PST THIS AFTERNOON... Winds have largely diminished below Advisory levels and the Wind Advisory will be allowed to expire at 3 PM PST. Local Advisory- level gusts will still be possible thru late this afternoon. $$ Sirard
The office that day
Everything else NWS Los Angeles, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 3, 4:35 AM PST | Dense Fog Advisory | LOX | 4 hr |
Nearby
Wind Advisories in California, 2021Every wind advisory in 2021
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.