Alert archive / California / Frost Advisories in 2021
Frost Advisory 3, NWS San Diego, CA
NWS San Diego, CA issued this frost advisory at Oct 11, 2021, 2:46 AM PDT for San Bernardino County, California. It took effect at Oct 12, 2021, 12:00 AM PDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Oct 11, 2021, 2:46 AM PDT (09:46 UTC)
- In effect from
- Oct 12, 2021, 12:00 AM PDT
- Expired
- Oct 11, 2021, 11:20 AM PDT
- In force
- Issued by
- NWS San Diego, CA
County San Bernardino County, CA
The radar
The Edwards AFB radar (KEYX), 129 km from the middle of the area, began a volume at 09:49 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
Las Vegas, NV (KVEF), launched 00:00Z, 9.8 hours before the alert went out and 180 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
- 3086 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
368 WWUS76 KSGX 110946 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 246 AM PDT Mon Oct 11 2021 CAZ060-112100- /O.NEW.KSGX.FR.Y.0003.211012T0700Z-211012T1600Z/ /O.CON.KSGX.HW.W.0008.211011T1800Z-211012T1000Z/ Apple and Lucerne Valleys- Including the cities of Victorville, Hesperia, and Apple Valley 246 AM PDT Mon Oct 11 2021 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 3 AM PDT TUESDAY... ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PDT TUESDAY... * WHAT...For the High Wind Warning, west winds 25 to 35 mph with gusts to 55 mph expected. For the Frost Advisory, temperatures as low as 30 in low-lying areas will result in frost formation. * WHERE...Apple and Lucerne Valleys. * WHEN...For the High Wind Warning, from 11 AM this morning to 3 AM PDT Tuesday. For the Frost Advisory, from midnight tonight to 9 AM PDT Tuesday. * IMPACTS...Damaging winds will blow down trees and power lines. Power outages are possible. Travel will be difficult, especially for high profile vehicles. Frost could kill sensitive outdoor vegetation if left unprotected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. Take steps now to protect tender plants from the cold. && $$ CAZ055-056-058-112100- /O.CON.KSGX.HW.W.0008.211011T1800Z-211012T1000Z/ San Bernardino County Mountains-Riverside County Mountains- San Diego County Mountains- Including the cities of Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, Wrightwood, Idyllwild-Pine Cove, Julian, and Pine Valley 246 AM PDT Mon Oct 11 2021 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 3 AM PDT TUESDAY... * WHAT...West winds 30 to 40 mph with gusts to 70 mph expected. * WHERE...San Bernardino County Mountains, Riverside County Mountains and San Diego County Mountains. * WHEN...From 11 AM this morning to 3 AM PDT Tuesday. * IMPACTS...Damaging winds will blow down trees and power lines. Power outages are possible. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. && $$ CAZ043-048-050-057-061-062-065-552-554-112100- /O.CON.KSGX.WI.Y.0034.211011T2000Z-211012T1000Z/ San Diego County Coastal Areas- San Bernardino and Riverside County Valleys-The Inland Empire- San Diego County Valleys-Santa Ana Mountains and Foothills- Coachella Valley-San Diego County Deserts- San Gorgonio Pass Near Banning-Orange County Coastal Areas- Orange County Inland Areas- Including the cities of Vista, Carlsbad, Encinitas, Chula Vista, National City, San Diego, Riverside, San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, Corona, Escondido, El Cajon, San Marcos, La Mesa, Santee, Poway, Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Borrego Springs, Banning, Desert Hot Springs, Huntington Beach, Costa Mesa, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 246 AM PDT Mon Oct 11 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 3 AM PDT TUESDAY... * WHAT...West winds 15 to 25 mph with gusts to 35 mph expected. * WHERE...San Diego County Deserts, Coachella Valley, San Gorgonio Pass Near Banning, Orange County Coastal Areas, San Diego County Valleys, Santa Ana Mountains and Foothills, Orange County Inland Areas, San Diego County Coastal Areas and San Bernardino and Riverside County Valleys-The Inland Empire. * WHEN...From 1 PM this afternoon to 3 AM PDT Tuesday. * IMPACTS...Gusty winds could blow around unsecured objects. 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. && $$
2 follow-up statements
369 WWUS76 KSGX 111427 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 727 AM PDT Mon Oct 11 2021 CAZ060-112230- /O.CON.KSGX.HW.W.0008.211011T1800Z-211012T1000Z/ /O.CON.KSGX.FR.Y.0003.211012T0700Z-211012T1600Z/ Apple and Lucerne Valleys- Including the cities of Victorville, Hesperia, and Apple Valley 727 AM PDT Mon Oct 11 2021 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 3 AM PDT TUESDAY... ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PDT TUESDAY... * WHAT...For the High Wind Warning, west winds 25 to 35 mph with gusts to 55 mph expected. For the Frost Advisory, temperatures as low as 30 in low-lying areas will result in frost formation. * WHERE...Apple and Lucerne Valleys. * WHEN...For the High Wind Warning, from 11 AM this morning to 3 AM PDT Tuesday. For the Frost Advisory, from midnight tonight to 9 AM PDT Tuesday. * IMPACTS...Damaging winds will blow down trees and power lines. Power outages are possible. Travel will be difficult, especially for high profile vehicles. Frost could kill sensitive outdoor vegetation if left unprotected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. Take steps now to protect tender plants from the cold. && $$ CAZ055-056-058-112230- /O.CON.KSGX.HW.W.0008.211011T1800Z-211012T1000Z/ San Bernardino County Mountains-Riverside County Mountains- San Diego County Mountains- Including the cities of Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, Wrightwood, Idyllwild-Pine Cove, Julian, and Pine Valley 727 AM PDT Mon Oct 11 2021 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 3 AM PDT TUESDAY... * WHAT...West to northwest winds 30 to 40 mph with gusts 65 to 75 mph expected. * WHERE...San Bernardino County Mountains, Riverside County Mountains and San Diego County Mountains. * WHEN...From 11 AM this morning to 3 AM PDT Tuesday. * 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...Strongest wind gusts will occur on the desert slopes of the San Diego and Riverside County Mountains. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. && $$ CAZ043-057-552-554-112230- /O.CON.KSGX.WI.Y.0034.211011T2000Z-211012T1000Z/ San Diego County Coastal Areas-Santa Ana Mountains and Foothills- Orange County Coastal Areas-Orange County Inland Areas- Including the cities of Vista, Carlsbad, Encinitas, Chula Vista, National City, San Diego, Huntington Beach, Costa Mesa, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 727 AM PDT Mon Oct 11 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 3 AM PDT TUESDAY... * WHAT...West to northwest winds 15 to 25 mph with gusts to 35 mph. Local gusts 40 to 45 mph possible along the immediate coast this evening. * WHERE...San Diego County Deserts, Orange County Coastal Areas, San Diego County Valleys, Santa Ana Mountains and Foothills, Orange County Inland Areas, and San Diego County Coastal Areas. * WHEN...From 1 PM this afternoon to 3 AM PDT Tuesday. Strongest after dark. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ048-112230- /O.CON.KSGX.WI.Y.0034.211011T2000Z-211012T1000Z/ San Bernardino and Riverside County Valleys-The Inland Empire- Including the cities of Riverside, San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, and Corona 727 AM PDT Mon Oct 11 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 3 AM PDT TUESDAY... * WHAT...West winds becoming north to northwest by late afternoon 15 to 25 mph with gusts to 35 mph expected. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire. * WHEN...From 1 PM this afternoon to 3 AM PDT Tuesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Strongest northerly winds below the Cajon Pass and along the foothills this evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ050-112230- /O.CON.KSGX.WI.Y.0034.211011T2000Z-211012T1000Z/ San Diego County Valleys- Including the cities of Escondido, El Cajon, San Marcos, La Mesa, Santee, and Poway 727 AM PDT Mon Oct 11 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 3 AM PDT TUESDAY... * WHAT...Southwest to west winds 15 to 25 mph with local gusts to 35 mph. * WHERE...San Diego County Valleys * WHEN...From 1 PM this afternoon to 3 AM PDT Tuesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Strongest winds late this afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ061-062-065-112230- /O.CON.KSGX.WI.Y.0034.211011T2000Z-211012T1000Z/ Coachella Valley-San Diego County Deserts- San Gorgonio Pass Near Banning- Including the cities of Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Borrego Springs, Banning, and Desert Hot Springs 727 AM PDT Mon Oct 11 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 3 AM PDT TUESDAY... * WHAT...West to northwest winds 25 to 35 mph with gusts to 50 to locally 60 mph expected. * WHERE...San Diego County Deserts, Coachella Valley, San Gorgonio Pass Near Banning * WHEN...From 1 PM this afternoon to 3 AM PDT Tuesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Strongest winds late afternoon and early evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit http://weather.gov/sandiego
132 WWUS76 KSGX 111820 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 1120 AM PDT Mon Oct 11 2021 CAZ060-120500- /O.CAN.KSGX.FR.Y.0003.211012T0700Z-211012T1600Z/ /O.CON.KSGX.HW.W.0008.000000T0000Z-211012T1000Z/ Apple and Lucerne Valleys- Including the cities of Victorville, Hesperia, and Apple Valley 1120 AM PDT Mon Oct 11 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 AM PDT TUESDAY... * WHAT...West winds 25 to 35 mph with gusts to 55 mph expected. * WHERE...Apple and Lucerne Valleys. * WHEN...Until 3 AM PDT Tuesday. * IMPACTS...Damaging winds will blow down trees and power lines. Power outages are possible. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Even though winds will decrease later tonight, they are expected to remain strong enough to limit any frost threat so the Frost Advisory has been cancelled. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. && $$ CAZ055-056-058-120500- /O.CON.KSGX.HW.W.0008.000000T0000Z-211012T1000Z/ San Bernardino County Mountains-Riverside County Mountains- San Diego County Mountains- Including the cities of Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, Wrightwood, Idyllwild-Pine Cove, Julian, and Pine Valley 1120 AM PDT Mon Oct 11 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 AM PDT TUESDAY... * WHAT...West to northwest winds 30 to 40 mph with gusts 65 to 75 mph expected. * WHERE...San Bernardino County Mountains, Riverside County Mountains and San Diego County Mountains. * WHEN...From 11 AM this morning to 3 AM PDT Tuesday. * 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...Strongest wind gusts will occur on the desert slopes of the San Diego and Riverside County Mountains. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. && $$ CAZ043-057-552-554-120500- /O.CON.KSGX.WI.Y.0034.211011T2000Z-211012T1000Z/ San Diego County Coastal Areas-Santa Ana Mountains and Foothills- Orange County Coastal Areas-Orange County Inland Areas- Including the cities of Vista, Carlsbad, Encinitas, Chula Vista, National City, San Diego, Huntington Beach, Costa Mesa, Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 1120 AM PDT Mon Oct 11 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT TUESDAY... * WHAT...West to northwest winds 15 to 25 mph with gusts to 35 mph. Local gusts 40 to 45 mph possible along the immediate coast this evening. * WHERE...San Diego County Deserts, Orange County Coastal Areas, San Diego County Valleys, Santa Ana Mountains and Foothills, Orange County Inland Areas, and San Diego County Coastal Areas. * WHEN...From 1 PM this afternoon to 3 AM PDT Tuesday. Strongest after dark. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ048-120500- /O.CON.KSGX.WI.Y.0034.211011T2000Z-211012T1000Z/ San Bernardino and Riverside County Valleys-The Inland Empire- Including the cities of Riverside, San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, and Corona 1120 AM PDT Mon Oct 11 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT TUESDAY... * WHAT...West winds becoming north to northwest by late afternoon 15 to 25 mph with local gusts to 35 mph expected. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire. * WHEN...From 1 PM this afternoon to 3 AM PDT Tuesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Strongest northerly winds below the Cajon Pass and along the foothills this evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ050-120500- /O.CON.KSGX.WI.Y.0034.211011T2000Z-211012T1000Z/ San Diego County Valleys- Including the cities of Escondido, El Cajon, San Marcos, La Mesa, Santee, and Poway 1120 AM PDT Mon Oct 11 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT TUESDAY... * WHAT...Southwest to west winds 15 to 25 mph with local gusts to 35 mph. * WHERE...San Diego County Valleys. * WHEN...From 1 PM this afternoon to 3 AM PDT Tuesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Strongest winds late this afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ061-062-065-120500- /O.CON.KSGX.WI.Y.0034.211011T2000Z-211012T1000Z/ Coachella Valley-San Diego County Deserts- San Gorgonio Pass Near Banning- Including the cities of Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Borrego Springs, Banning, and Desert Hot Springs 1120 AM PDT Mon Oct 11 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT TUESDAY... * WHAT...West to northwest winds 25 to 35 mph with gusts 50 mph. Locally 60 mph near the I-8 in southern San Diego County. * WHERE...San Diego County Deserts, Coachella Valley, San Gorgonio Pass Near Banning. * WHEN...From 1 PM this afternoon to 3 AM PDT Tuesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Strongest winds late afternoon and early evening. Blowing dust may limit visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ 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 |
|---|---|---|---|---|
| Oct 11, 12:29 PM PDT | Blowing Dust Advisory | SGX | San Bernardino | 10 hr |
Nearby
Frost Advisories in California, 2021Every frost 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.