Alert archive / California / High Wind Watches in 2021
High Wind Watch 3, NWS San Diego, CA
NWS San Diego, CA issued this high wind watch at Feb 23, 2021, 12:06 PM PST for 4 counties in California. It took effect at Feb 24, 2021, 9:00 PM PST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 23, 2021, 12:06 PM PST (20:06 UTC)
- In effect from
- Feb 24, 2021, 9:00 PM PST
- Expired
- Feb 24, 2021, 2:25 AM PST
- In force
- Issued by
- NWS San Diego, CA
Counties Orange County, CA, Riverside County, CA, San Bernardino County, CA, San Diego County, CA
The radar
The Santa Ana Mts radar (KSOX), 88 km from the middle of the area, began a volume at 20:03 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, 8.1 hours before the alert went out and 124 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
- 3908 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
614 WWUS76 KSGX 232006 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 1206 PM PST Tue Feb 23 2021 CAZ048-055-057-554-240600- /O.NEW.KSGX.HW.A.0003.210225T0500Z-210225T2200Z/ San Bernardino and Riverside County Valleys-The Inland Empire- San Bernardino County Mountains-Santa Ana Mountains and Foothills- Orange County Inland Areas- Including the cities of San Bernardino, Ontario, Fontana, Rancho Cucamonga, Corona, Crestline, Running Springs, Orange, and Mission Viejo 1206 PM PST Tue Feb 23 2021 ...HIGH WIND WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH THURSDAY AFTERNOON... * WHAT...Northeast winds 30 to 40 mph with gusts up to 70 mph possible. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire, San Bernardino County Mountains, Santa Ana Mountains and Foothills and Orange County Inland Areas. * WHEN...From Wednesday evening through Thursday afternoon. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ For more information from the National Weather Service visit http://weather.gov/sandiego
2 follow-up statements
639 WWUS76 KSGX 240512 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 912 PM PST Tue Feb 23 2021 CAZ048-055-057-554-241330- /O.CON.KSGX.HW.A.0003.210225T0500Z-210225T2200Z/ San Bernardino and Riverside County Valleys-The Inland Empire- San Bernardino County Mountains-Santa Ana Mountains and Foothills- Orange County Inland Areas- Including the cities of San Bernardino, Ontario, Fontana, Rancho Cucamonga, Corona, Crestline, Running Springs, Orange, and Mission Viejo 912 PM PST Tue Feb 23 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM WEDNESDAY EVENING THROUGH THURSDAY AFTERNOON... * WHAT...Northeast winds 30 to 40 mph with gusts up to 70 mph possible. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire, San Bernardino County Mountains, Santa Ana Mountains and Foothills and Orange County Inland Areas. * WHEN...From Wednesday evening through Thursday afternoon. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ For more information from the National Weather Service visit http://weather.gov/sandiego
343 WWUS76 KSGX 241025 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 225 AM PST Wed Feb 24 2021 CAZ048-055-057-554-241830- /O.UPG.KSGX.HW.A.0003.210225T0500Z-210225T2200Z/ /O.NEW.KSGX.HW.W.0005.210225T0600Z-210225T2000Z/ San Bernardino and Riverside County Valleys-The Inland Empire- San Bernardino County Mountains-Santa Ana Mountains and Foothills- Orange County Inland Areas- Including the cities of Fontana, Rancho Cucamonga, Crestline, Running Springs, and Orange 225 AM PST Wed Feb 24 2021 ...HIGH WIND WARNING IN EFFECT FROM 10 PM THIS EVENING TO NOON PST THURSDAY... * WHAT...Northeast winds 20 to 30 mph with gusts to 55 mph expected. Isolated gusts to 65 mph. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire, San Bernardino County Mountains, Santa Ana Mountains and Foothills and Orange County Inland Areas. * WHEN...From 10 PM this evening to noon PST Thursday. * IMPACTS...Damaging winds will blow down trees and power lines. Power outages are possible. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. && $$ For more information from the National Weather Service visit http://weather.gov/sandiego 17
Nearby
High Wind Watches in California, 2021Every high wind watch 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.