Alert archive / California / High Wind Warnings in 2020
High Wind Warning 8, NWS San Diego, CA
NWS San Diego, CA issued this high wind warning at Nov 8, 2020, 8:42 AM PST for San Diego County, California. It was in force for 13 hr. 4 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Nov 8, 2020, 8:42 AM PST (16:42 UTC)
- Expired
- Nov 8, 2020, 10:00 PM PST
- In force
- 13 hr
- Issued by
- NWS San Diego, CA
County San Diego County, CA
The radar
The San Diego radar (KNKX), 28 km from the middle of the area, began a volume at 16:46 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Nov 8, 1:27 PM PST | NON-TSTM WND DMG | 8 Se Palomar Mountain, CA | TREE BLOCKING BOTH LANES OF THE ROAD ON HWY 76 AND GRADE RD. WEATHER OBS NEAR LAKE HENSHAW REPORT WIND GUSTS OF 38-39 MPH WITH SUSTAINED WINDS OF 28-29 MPH OUT OF THE SOUTHWEST FROM 1:10 PM UNTIL 1:30 PM. |
| Nov 8, 1:28 PM PST | NON-TSTM WND DMG | 7 Nnw Santa Ysabel, CA | TREE, APPROXIMATELY 14 INCHES IN DIAMETER BLOCKING ROAD COMPLETELY AT HWY 76/HWY 79 INTERCHANGE. WEATHER OBS NEAR LAKE HENSHAW REPORT WIND GUSTS OF 38-39 MPH WITH SUSTAINED WINDS OF 28-29 MPH OUT OF THE SOUTHWEST FROM 1:10 PM UNTIL 1:30 PM. |
| Nov 8, 4:00 PM PST | SNOW 5 | 2 N Mt Laguna, CA | SOCIAL MEDIA REPORT OF STORM TOTAL SNOW OF 3-5 INCHES AT MONUMENT PEAK AS OF 4 PM. ELEVATION 6260 FT. |
| Nov 8, 6:30 PM PST | SNOW 4 | 1 Wnw Palomar Mountain, CA | SOCIAL MEDIA REPORT OF STORM TOTAL SNOW OF 4 INCHES AT PALOMAR MOUNTAIN AS OF 630 PM. ELEVATION 5400 FT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
San Diego, CA (KNKX), launched 12:00Z, 4.7 hours before the alert went out and 47 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
- 45 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 844 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 138 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
977 WWUS76 KSGX 081642 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 842 AM PST Sun Nov 8 2020 CAZ058-062-090045- /O.UPG.KSGX.WI.Y.0020.000000T0000Z-201109T0600Z/ /O.NEW.KSGX.HW.W.0008.201108T1642Z-201109T0600Z/ San Diego County Mountains-San Diego County Deserts- Including the cities of Julian, Pine Valley, and Borrego Springs 842 AM PST Sun Nov 8 2020 ...HIGH WIND WARNING IN EFFECT UNTIL 10 PM PST THIS EVENING... * WHAT...West winds 30 to 40 mph with gusts 65. Stronger wind gusts to 75 MPH or more possible over the windier mountain crests onto the desert slopes. * WHERE...San Diego County Mountain crests into the San Diego County Deserts. * WHEN...Until 10 PM PST this evening. * IMPACTS...Damaging winds can blow down trees and power lines. Power outages are possible. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...This is an update of the Wind Advisory which was in effect earlier. 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. && $$ CAZ060-090045- /O.CON.KSGX.FZ.W.0003.201109T0900Z-201109T1600Z/ /O.CON.KSGX.WI.Y.0020.000000T0000Z-201109T0600Z/ Apple and Lucerne Valleys- Including the cities of Victorville, Hesperia, and Apple Valley 842 AM PST Sun Nov 8 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 8 AM PST MONDAY... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 24 expected. For the Wind Advisory, west winds 15 to 25 mph with gusts to 40 mph. Isolated gusts 60 mph near the foothills this afternoon. * WHERE...Apple and Lucerne Valleys. * WHEN...For the Freeze Warning, from 1 AM to 8 AM PST Monday. For the Wind Advisory, until 10 PM PST this evening. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing && $$ CAZ061-065-090045- /O.CON.KSGX.WI.Y.0020.000000T0000Z-201109T0600Z/ Coachella Valley-San Gorgonio Pass Near Banning- Including the cities of Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Banning, and Desert Hot Springs 842 AM PST Sun Nov 8 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * WHAT...Southwest to west winds 20 to 30 mph with gusts to 50 mph expected. Isolated gusts to 70 mph possible on rural desert mountain slopes and near the pass. * WHERE...Coachella Valley, San Gorgonio Pass Near Banning, Riverside County Mountains. * WHEN...Through 10 PM PST today. * IMPACTS...Blowing dust will occur across the deserts. Motorists should be alert for sudden restrictions in visibility. 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. && $$ CAZ043-050-552-090045- /O.CON.KSGX.WI.Y.0020.000000T0000Z-201109T0600Z/ San Diego County Coastal Areas-San Diego County Valleys- Orange County Coastal Areas- Including the cities of Vista, Carlsbad, Encinitas, Chula Vista, National City, San Diego, Escondido, El Cajon, San Marcos, La Mesa, Santee, Poway, Huntington Beach, and Costa Mesa 842 AM PST Sun Nov 8 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * WHAT...West winds 10 to 20 mph with gusts to 35 mph. Gusts to 45 mph possible in heavier showers. * WHERE...San Diego County Coastal Areas, San Diego County Valleys, Orange County Coastal Areas. * WHEN...Through 10 PM PST Sunday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs and palm fronds could be blown down. PRECAUTIONARY/PREPAREDNESS ACTIONS... Secure outdoor objects. && $$ For more information from the National Weather Service visit http://weather.gov/sandiego
2 follow-up statements
546 WWUS76 KSGX 082100 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 100 PM PST Sun Nov 8 2020 CAZ060-090600- /O.NEW.KSGX.FZ.W.0004.201110T0800Z-201110T1500Z/ /O.CON.KSGX.FZ.W.0003.201109T0900Z-201109T1600Z/ /O.CON.KSGX.WI.Y.0020.000000T0000Z-201109T0600Z/ Apple and Lucerne Valleys- Including the cities of Victorville, Hesperia, and Apple Valley 100 PM PST Sun Nov 8 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... ...FREEZE WARNING IN EFFECT TONIGHT AND MONDAY NIGHT... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 25 expected. For the Wind Advisory, west winds 15 to 25 mph with gusts 45 mph. Local gusts to 50 mph. * WHERE...Apple and Lucerne Valleys. * WHEN...For the Freeze Warning, late tonight and again Monday night. For the Wind Advisory, until 10 PM PST this evening. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing && $$ CAZ058-062-090600- /O.CON.KSGX.HW.W.0008.000000T0000Z-201109T0600Z/ San Diego County Mountains-San Diego County Deserts- Including the cities of Julian, Pine Valley, and Borrego Springs 100 PM PST Sun Nov 8 2020 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * WHAT...West winds 30 to 40 mph with gusts 65. Stronger wind gusts to 75 MPH or more possible over the windier mountain crests onto the desert slopes. * WHERE...San Diego County Mountain crests into the San Diego County deserts. * WHEN...Until 10 PM PST this evening. * IMPACTS...Damaging winds can blow down trees and power lines. Power outages are possible. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Damaging wind gusts are possible near the desert foothills, including the Borrego Valley. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ CAZ061-065-090600- /O.CON.KSGX.WI.Y.0020.000000T0000Z-201109T0600Z/ Coachella Valley-San Gorgonio Pass Near Banning- Including the cities of Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Banning, and Desert Hot Springs 100 PM PST Sun Nov 8 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * WHAT...Southwest to west winds 20 to 30 mph with gusts to 50 mph expected. Isolated gusts to 70 mph possible on rural desert mountain slopes and near the pass. * WHERE...Coachella Valley, San Gorgonio Pass Near Banning, Riverside County Mountains. * WHEN...Through 10 PM PST today. * IMPACTS...Blowing dust will occur across the deserts. Motorists should be alert for sudden restrictions in visibility. 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. && $$ CAZ043-050-552-090600- /O.CON.KSGX.WI.Y.0020.000000T0000Z-201109T0600Z/ San Diego County Coastal Areas-San Diego County Valleys- Orange County Coastal Areas- Including the cities of Vista, Carlsbad, Encinitas, Chula Vista, National City, San Diego, Escondido, El Cajon, San Marcos, La Mesa, Santee, Poway, Huntington Beach, and Costa Mesa 100 PM PST Sun Nov 8 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * WHAT...West winds 10 to 20 mph with gusts to 35 mph. Gusts to 45 mph possible in heavier showers. * WHERE...San Diego County Coastal Areas, San Diego County Valleys, Orange County Coastal Areas. * WHEN...Through 10 PM PST Sunday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs and palm fronds could be blown down. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit http://weather.gov/sandiego
827 WWUS76 KSGX 090538 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 938 PM PST Sun Nov 8 2020 CAZ058-062-090645- /O.EXP.KSGX.HW.W.0008.000000T0000Z-201109T0600Z/ San Diego County Mountains-San Diego County Deserts- Including the cities of Julian, Pine Valley, and Borrego Springs 938 PM PST Sun Nov 8 2020 ...HIGH WIND WARNING WILL EXPIRE AT 10 PM PST THIS EVENING... Winds have decreased and will continue to weaken overnight. The High Wind Warning will be allowed to expire at 10 PM. $$ CAZ060-091345- /O.EXP.KSGX.WI.Y.0020.000000T0000Z-201109T0600Z/ /O.CON.KSGX.FZ.W.0003.201109T0900Z-201109T1600Z/ /O.CON.KSGX.FZ.W.0004.201110T0800Z-201110T1500Z/ Apple and Lucerne Valleys- Including the cities of Victorville, Hesperia, and Apple Valley 938 PM PST Sun Nov 8 2020 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 8 AM PST MONDAY... ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT MONDAY NIGHT TO 7 AM PST TUESDAY... ...WIND ADVISORY WILL EXPIRE AT 10 PM PST THIS EVENING... * WHAT...Sub-freezing temperatures as low as 25 degrees expected. * WHERE...Apple and Lucerne Valleys. * WHEN...For the Freeze Warning, from 1 AM to 8 AM PST Monday and again from midnight Monday night to 7 AM PST Tuesday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing && $$ CAZ061-065-090645- /O.EXP.KSGX.WI.Y.0020.000000T0000Z-201109T0600Z/ Coachella Valley-San Gorgonio Pass Near Banning- Including the cities of Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, Coachella, Banning, and Desert Hot Springs 938 PM PST Sun Nov 8 2020 ...WIND ADVISORY WILL EXPIRE AT 10 PM PST THIS EVENING... Winds have begun to decrease and will continue to weaken overnight. The Wind Advisory will be allowed to expire at 10 PM. $$ CAZ043-050-552-090645- /O.EXP.KSGX.WI.Y.0020.000000T0000Z-201109T0600Z/ San Diego County Coastal Areas-San Diego County Valleys- Orange County Coastal Areas- Including the cities of Vista, Carlsbad, Encinitas, Chula Vista, National City, San Diego, Escondido, El Cajon, San Marcos, La Mesa, Santee, Poway, Huntington Beach, and Costa Mesa 938 PM PST Sun Nov 8 2020 ...WIND ADVISORY WILL EXPIRE AT 10 PM PST THIS EVENING... Winds have begun to decrease and will continue to weaken overnight. The Wind Advisory will be allowed to expire at 10 PM. $$ 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 |
|---|---|---|---|---|
| Nov 8, 3:39 AM PST | Freeze Warning | SGX | San Bernardino | 28 hr |
| Nov 8, 1:00 PM PST | Freeze Warning | SGX | San Bernardino | 43 hr |
Nearby
High Wind Warnings in California, 2020Every high wind warning in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.