Alert archive / California / High Wind Watches in 2021
High Wind Watch 1, NWS San Diego, CA
NWS San Diego, CA issued this high wind watch at Jan 16, 2021, 6:33 PM PST for 4 counties in California. It took effect at Jan 18, 2021, 10:00 PM PST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Jan 16, 2021, 6:33 PM PST (02:33 UTC)
- In effect from
- Jan 18, 2021, 10:00 PM PST
- Expired
- Jan 18, 2021, 12:42 PM 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 02:38 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, 2.6 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
- 4533 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- -45 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
161 WWUS76 KSGX 170233 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 633 PM PST Sat Jan 16 2021 CAZ048-055-057-554-171400- /O.NEW.KSGX.HW.A.0001.210119T0600Z-210120T1200Z/ 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, Big Bear Lake, Running Springs, Santa Ana, Orange, and Mission Viejo 633 PM PST Sat Jan 16 2021 ...HIGH WIND WATCH IN EFFECT FROM MONDAY EVENING THROUGH LATE TUESDAY NIGHT... * WHAT...Northeast winds 25 to 35 mph with gusts 50 to 70 mph for urban areas of inland Orange County and the Inland Empire. Northeast winds 30 to 45 mph, with gusts 70 to 80 mph, in the Orange County foothills and Inland Empire communities near Cajon Pass. Remote and wind-prone canyon/pass locations and mountain slopes may gust to 100 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. The strongest winds are expected in the vicinity of Cajon Pass, and west-facing slopes of the Santa Ana Mountains. * WHEN...From Monday evening through late Tuesday night. Strongest winds on Tuesday. * IMPACTS...Damaging winds capable of downing trees and power lines. Widespread power outages will be possible. Extremely difficult travel conditions for high profile vehicles due to crosswinds. Possible damage to weak roofing and temporary structures such as tents or canopies. * ADDITIONAL DETAILS...Loose objects should be secured. Local reductions in visibility may occur due to blowing dust. 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. && $$ Rodriguez For more information from the National Weather Service visit http://weather.gov/sandiego
5 follow-up statements
403 WWUS76 KSGX 171347 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 547 AM PST Sun Jan 17 2021 CAZ048-055-057-554-172200- /O.CON.KSGX.HW.A.0001.210119T0600Z-210120T1200Z/ San Bernardino and Riverside County Valleys-The Inland Empire- San Bernardino County Mountains-Santa Ana Mountains and Foothills- Orange County Inland Areas- Including the cities of San Bernardino, Ontario, Fontana, Rancho Cucamonga, Corona, Crestline, Big Bear Lake, Running Springs, Santa Ana, Orange, and Mission Viejo 547 AM PST Sun Jan 17 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM MONDAY EVENING THROUGH LATE TUESDAY NIGHT... * WHAT...Northeast winds 25 to 35 mph with gusts to 65 mph possible. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire, Santa Ana Mountains and Foothills, San Bernardino County Mountains and Orange County Inland Areas. * WHEN...From Monday evening through late Tuesday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Loose objects should be secured. Gusty winds will likely be more widespread than usual west of the mountains. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ For more information from the National Weather Service visit http://weather.gov/sandiego
340 WWUS76 KSGX 172140 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 140 PM PST Sun Jan 17 2021 CAZ048-055-057-554-180600- /O.CON.KSGX.HW.A.0001.210119T0600Z-210120T1200Z/ 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, Big Bear Lake, Running Springs, Santa Ana, Orange, and Mission Viejo 140 PM PST Sun Jan 17 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM MONDAY EVENING THROUGH LATE TUESDAY NIGHT... * WHAT...Northeast winds 25 to 35 mph with gusts 40 to 50 mph with local gusts over 65 mph possible. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire, Santa Ana Mountains and Foothills, San Bernardino County Mountains and Orange County Inland Areas. * WHEN...From Monday evening through late Tuesday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Loose objects should be secured. Gusty winds will likely be more widespread than usual west of the mountains. 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. && $$ Maxwell
189 WWUS76 KSGX 180533 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 933 PM PST Sun Jan 17 2021 CAZ048-055-057-554-181400- /O.CON.KSGX.HW.A.0001.210119T0600Z-210120T1200Z/ San Bernardino and Riverside County Valleys-The Inland Empire- San Bernardino County Mountains-Santa Ana Mountains and Foothills- Orange County Inland Areas- Including the cities of San Bernardino, Ontario, Fontana, Rancho Cucamonga, Corona, Crestline, Big Bear Lake, Running Springs, Santa Ana, Orange, and Mission Viejo 933 PM PST Sun Jan 17 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM MONDAY EVENING THROUGH LATE TUESDAY NIGHT... * WHAT...Northeast winds 20 to 30 mph with gusts to 50 to 60 mph possible. Wind-prone areas of the Santa Ana Mountains and foothills, as well as areas in the vicinity of Cajon Pass, could see gusts to 80 mph. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire, Santa Ana Mountains and Foothills, San Bernardino County Mountains and Orange County Inland Areas. * WHEN...From Monday evening through late Tuesday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages will be possible. Very difficult travel for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ Rodriguez For more information from the National Weather Service visit http://weather.gov/sandiego
408 WWUS76 KSGX 181217 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 417 AM PST Mon Jan 18 2021 CAZ048-055-057-554-182245- /O.CON.KSGX.HW.A.0001.210119T0600Z-210120T1200Z/ 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, Big Bear Lake, Running Springs, Santa Ana, Orange, and Mission Viejo 417 AM PST Mon Jan 18 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH LATE TUESDAY NIGHT... * WHAT...Areas of northeast winds 20 to 30 mph with gusts to 55 mph possible. Isolated gusts to 75 mph. * WHERE...Along and below the coastal slopes of the mountains in San Bernardino and Riverside Counties and the Santa Ana Mountains. Locally stronger winds in the Inland Empire below the Cajon and San Gorgonio Passes and near the coastal foothills of the Santa Ana Mountains. * WHEN...North to northeast winds will develop today and be strongest for late tonight into Tuesday. The winds will become east to northeast on Tuesday afternoon and continue through Tuesday night, diminishing Wednesday. * 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. && $$ For more information from the National Weather Service visit http://weather.gov/sandiego 17
559 WWUS76 KSGX 182042 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 1242 PM PST Mon Jan 18 2021 CAZ055-182145- /O.CAN.KSGX.HW.A.0001.210119T0600Z-210120T1200Z/ San Bernardino County Mountains- 1242 PM PST Mon Jan 18 2021 $$ CAZ048-057-554-190445- /O.UPG.KSGX.HW.A.0001.210119T0600Z-210120T1200Z/ /O.NEW.KSGX.HW.W.0001.210119T0900Z-210121T0600Z/ San Bernardino and Riverside County Valleys-The Inland Empire- Santa Ana Mountains and Foothills-Orange County Inland Areas- Including the cities of Riverside, San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, Corona, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 1242 PM PST Mon Jan 18 2021 ...HIGH WIND WARNING IN EFFECT FROM 1 AM TUESDAY TO 10 PM PST WEDNESDAY... * WHAT...Northeast winds 20 to 30 mph with gusts up to 65 mph expected. Isolated gusts over 75 mph possible in wind-prone passes and canyons. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire, Santa Ana Mountains and Foothills, and Orange County Inland Areas. * WHEN...From 1 AM Tuesday to 10 PM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines, and any unsecured objects. Power outages are possible. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Highest gusts expected Tuesday morning then again Tuesday night. Please report any severe damage to NWS San Diego. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ CAZ552-190445- /O.NEW.KSGX.HW.W.0001.210119T0900Z-210121T0600Z/ Orange County Coastal Areas- Including the cities of Huntington Beach and Costa Mesa 1242 PM PST Mon Jan 18 2021 ...HIGH WIND WARNING IN EFFECT FROM 1 AM TUESDAY TO 10 PM PST WEDNESDAY... * WHAT...East winds 15 to 25 mph with gusts to 50 mph expected. * WHERE...Orange County Coastal Areas. * WHEN...From 1 AM Tuesday to 10 PM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines, and any unsecured objects. Power outages are possible. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Highest gusts expected Tuesday morning then again Tuesday night. Please report any severe damage to NWS San Diego. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ CAZ043-050-058-190445- /O.NEW.KSGX.HW.W.0001.210119T1500Z-210121T0600Z/ San Diego County Coastal Areas-San Diego County Valleys- San Diego County Mountains- Including the cities of Vista, Carlsbad, Encinitas, Chula Vista, National City, San Diego, Escondido, El Cajon, San Marcos, La Mesa, Santee, Poway, Julian, and Pine Valley 1242 PM PST Mon Jan 18 2021 ...HIGH WIND WARNING IN EFFECT FROM 7 AM TUESDAY TO 10 PM PST WEDNESDAY... * WHAT...East winds 25 to 35 mph with gusts to 60 mph expected. Gusts over 70 mph possible in wind-prone passes and canyons. * WHERE...San Diego County Coastal Areas, San Diego County Valleys and San Diego County Mountains. * WHEN...From 7 AM Tuesday to 10 PM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Power outages are possible. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Highest gusts expected Tuesday night then again Wednesday late afternoon and evening. Please report any severe damage to NWS San Diego. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ APR For more information from the National Weather Service visit http://weather.gov/sandiego
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 17, 1:20 PM PST | Fire Weather Watch | SGX | Orange, Riverside, San Bernardino, San Diego | 21 hr |
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.