Alert archive / California / Wind Advisories in 2021
Wind Advisory 37, NWS San Diego, CA
NWS San Diego, CA issued this wind advisory at Nov 20, 2021, 3:00 AM PST for 4 counties in California. It took effect at Nov 20, 2021, 11:00 PM PST. It was in force for 27 hr.
The area
The counties it named.
The facts
- Issued
- Nov 20, 2021, 3:00 AM PST (11:00 UTC)
- In effect from
- Nov 20, 2021, 11:00 PM PST
- Expired
- Nov 22, 2021, 2:00 AM PST
- In force
- 27 hr
- 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 11:02 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, 11.0 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
- 1601 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
135 WWUS76 KSGX 201100 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 300 AM PST Sat Nov 20 2021 CAZ048-201900- /O.NEW.KSGX.FG.Y.0012.211120T1100Z-211120T1700Z/ /O.NEW.KSGX.WI.Y.0037.211121T0700Z-211122T1000Z/ San Bernardino and Riverside County Valleys-The Inland Empire- Including the cities of Riverside, San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, and Corona 300 AM PST Sat Nov 20 2021 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM TODAY... ...WIND ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO 2 AM MONDAY... * WHAT...For the Dense Fog Advisory, visibility one quarter mile or less. For the Wind Advisory, northeast winds 20 to 30 mph with gusts to 60 mph expected below the Cajon Pass. * WHERE...The Inland Empire. * WHEN...For the Dense Fog Advisory, until 9 AM today. For the Wind Advisory, from 11 PM this evening to 2 AM Monday. * IMPACTS...Low visibility this morning in dense fog on I-15 and in Ontario, Chino and Riverside. Gusty Santa Ana winds tonight and Sunday could blow around unsecured objects. * ADDITIONAL DETAILS...At 3 AM the visibility was one-eighth mile at Ontario and one-quarter mile at Ontario, Chino and Riverside. The fog will lift mid morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving in strong winds, especially if operating a high profile vehicle. If driving in dense fog, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ CAZ050-201700- /O.NEW.KSGX.FG.Y.0012.211120T1100Z-211120T1700Z/ San Diego County Valleys- Including the cities of Escondido, El Cajon, San Marcos, La Mesa, Santee, and Poway 300 AM PST Sat Nov 20 2021 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM PST THIS MORNING... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...San Diego County Valleys. * WHEN...Until 9 AM today. * IMPACTS...Hazardous driving conditions due to low visibility. * ADDITIONAL DETAILS...At 3 AM Ramona and Fallbrook reported low visibility in dense fog. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving in dense fog, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ CAZ055>057-065-554-201900- /O.NEW.KSGX.WI.Y.0037.211121T0700Z-211122T1000Z/ San Bernardino County Mountains-Riverside County Mountains- Santa Ana Mountains and Foothills-San Gorgonio Pass Near Banning- Orange County Inland Areas- Including the cities of Crestline, Running Springs, Banning, and Mission Viejo 300 AM PST Sat Nov 20 2021 ...WIND ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO 2 AM MONDAY... * WHAT...Northeast winds 20 to 30 mph with gusts to 55 mph expected, with isolated gusts to 60 mph. * WHERE...San Bernardino County Mountains, Riverside County Mountains, Santa Ana Mountains and Foothills, San Gorgonio Pass Near Banning and Orange County Inland Areas. * WHEN...From 11 PM this evening to 2 AM Monday. * 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. && $$ Moede
7 follow-up statements
721 WWUS76 KSGX 201712 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 912 AM PST Sat Nov 20 2021 CAZ048-202215- /O.EXP.KSGX.FG.Y.0012.000000T0000Z-211120T1700Z/ /O.CON.KSGX.WI.Y.0037.211121T0700Z-211122T1000Z/ San Bernardino and Riverside County Valleys-The Inland Empire- Including the cities of Riverside, San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, and Corona 912 AM PST Sat Nov 20 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 2 AM PST MONDAY... ...DENSE FOG ADVISORY HAS EXPIRED... * WHAT...Northeast winds 20 to 30 mph with gusts to 60 mph expected. * WHERE...The Inland Empire. * WHEN...The Wind Advisory will be in effect from 11 PM this evening to 2 AM Monday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ050-201815- /O.EXP.KSGX.FG.Y.0012.000000T0000Z-211120T1700Z/ San Diego County Valleys- Including the cities of Escondido, El Cajon, San Marcos, La Mesa, Santee, and Poway 912 AM PST Sat Nov 20 2021 ...DENSE FOG ADVISORY HAS EXPIRED... The fog has lifted and visibility has improved. $$ CAZ055>057-065-554-202215- /O.CON.KSGX.WI.Y.0037.211121T0700Z-211122T1000Z/ San Bernardino County Mountains-Riverside County Mountains- Santa Ana Mountains and Foothills-San Gorgonio Pass Near Banning- Orange County Inland Areas- Including the cities of Crestline, Running Springs, Banning, and Mission Viejo 912 AM PST Sat Nov 20 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 2 AM PST MONDAY... * WHAT...Northeast winds 20 to 30 mph with gusts to 55 mph expected. Isolated gusts to 60 mph possible. * WHERE...San Bernardino County Mountains, Riverside County Mountains, Santa Ana Mountains and Foothills, San Gorgonio Pass Near Banning and Orange County Inland Areas. * WHEN...From 11 PM this evening to 2 AM Monday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit http://weather.gov/sandiego
438 WWUS76 KSGX 202104 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 104 PM PST Sat Nov 20 2021 CAZ048-055>057-065-554-210600- /O.CON.KSGX.WI.Y.0037.211121T0700Z-211122T1000Z/ San Bernardino and Riverside County Valleys-The Inland Empire- San Bernardino County Mountains-Riverside County Mountains- Santa Ana Mountains and Foothills-San Gorgonio Pass Near Banning- Orange County Inland Areas- Including the cities of San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, Crestline, Running Springs, Banning, and Mission Viejo 104 PM PST Sat Nov 20 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 2 AM PST MONDAY... * WHAT...Northeast winds 20 to 30 mph with gusts to 55 mph expected. Isolated gusts to 60 mph possible. * WHERE...San Bernardino County Mountains, Riverside County Mountains, Santa Ana Mountains and Foothills, the Inland Empire, San Gorgonio Pass Near Banning and Orange County Inland Areas. * WHEN...From 11 PM this evening to 2 AM Monday. * 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. && $$ For more information from the National Weather Service visit http://weather.gov/sandiego
447 WWUS76 KSGX 210352 NPWSGX URGENT - WEATHER MESSAGE National Weather Service San Diego CA 752 PM PST Sat Nov 20 2021 CAZ048-055>057-065-554-211400- /O.CON.KSGX.WI.Y.0037.211121T0700Z-211122T1000Z/ San Bernardino and Riverside County Valleys-The Inland Empire- San Bernardino County Mountains-Riverside County Mountains- Santa Ana Mountains and Foothills-San Gorgonio Pass Near Banning- Orange County Inland Areas- Including the cities of San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, Crestline, Running Springs, Banning, and Mission Viejo 752 PM PST Sat Nov 20 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 2 AM PST MONDAY... * WHAT...Northeast winds 20 to 30 mph with gusts 45 to 55 mph expected. Isolated gusts to 60 mph possible. * WHERE...San Bernardino County Mountains, Riverside County Mountains, Santa Ana Mountains and Foothills, the Inland Empire, San Gorgonio Pass Near Banning and Orange County Inland Areas. * WHEN...From 11 PM this evening to 2 AM Monday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
654 WWUS76 KSGX 211249 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 449 AM PST Sun Nov 21 2021 CAZ048-055>057-065-554-212100- /O.CON.KSGX.WI.Y.0037.000000T0000Z-211122T1000Z/ San Bernardino and Riverside County Valleys-The Inland Empire- San Bernardino County Mountains-Riverside County Mountains- Santa Ana Mountains and Foothills-San Gorgonio Pass Near Banning- Orange County Inland Areas- Including the cities of San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, Crestline, Running Springs, Banning, and Mission Viejo 449 AM PST Sun Nov 21 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 2 AM MONDAY... * WHAT...Northeast winds 20 to 30 mph with gusts 45 to 55 mph expected. Isolated gusts to 60 mph possible. * WHERE...San Bernardino County Mountains, Riverside County Mountains, Santa Ana Mountains and Foothills, the Inland Empire, San Gorgonio Pass Near Banning and Orange County Inland Areas. * WHEN...Through 2 AM Monday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Peak wind gusts through 3 AM included 56 mph at Arrowhead Springs, 53 mph at Sill Hill, 49 mph at Rancho Cucamonga, and 48 mph at CSU San Bernardino. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ Moede
775 WWUS76 KSGX 212043 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 1243 PM PST Sun Nov 21 2021 CAZ048-055>057-065-554-220600- /O.CON.KSGX.WI.Y.0037.000000T0000Z-211122T1000Z/ San Bernardino and Riverside County Valleys-The Inland Empire- San Bernardino County Mountains-Riverside County Mountains- Santa Ana Mountains and Foothills-San Gorgonio Pass Near Banning- Orange County Inland Areas- Including the cities of San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, Crestline, Running Springs, Banning, and Mission Viejo 1243 PM PST Sun Nov 21 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST MONDAY... * WHAT...Northeast winds 20 to 30 mph with gusts 45 to 55 mph expected. * WHERE...San Bernardino County Mountains, Riverside County Mountains, Santa Ana Mountains and Foothills, the Inland Empire, San Gorgonio Pass Near Banning and Orange County Inland Areas. * WHEN...Through 2 AM Monday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit http://weather.gov/sandiego
406 WWUS76 KSGX 220430 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 830 PM PST Sun Nov 21 2021 CAZ048-055>057-065-554-221000- /O.CON.KSGX.WI.Y.0037.000000T0000Z-211122T1000Z/ San Bernardino and Riverside County Valleys-The Inland Empire- San Bernardino County Mountains-Riverside County Mountains- Santa Ana Mountains and Foothills-San Gorgonio Pass Near Banning- Orange County Inland Areas- Including the cities of San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, Crestline, Running Springs, Banning, and Mission Viejo 830 PM PST Sun Nov 21 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST MONDAY... * WHAT...Northeast winds 20 to 30 mph with gusts 45 to 55 mph expected. * WHERE...San Bernardino County Mountains, Riverside County Mountains, Santa Ana Mountains and Foothills, the Inland Empire, San Gorgonio Pass Near Banning and Orange County Inland Areas. * WHEN...Through 2 AM Monday. * 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. && $$ For more information from the National Weather Service visit http://weather.gov/sandiego
601 WWUS76 KSGX 221026 NPWSGX URGENT - WEATHER MESSAGE National Weather Service SAN DIEGO CA 226 AM PST Mon Nov 22 2021 CAZ048-055>057-065-554-221130- /O.EXP.KSGX.WI.Y.0037.000000T0000Z-211122T1000Z/ San Bernardino and Riverside County Valleys-The Inland Empire- San Bernardino County Mountains-Riverside County Mountains- Santa Ana Mountains and Foothills-San Gorgonio Pass Near Banning- Orange County Inland Areas- Including the cities of San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, Crestline, Running Springs, Banning, and Mission Viejo 226 AM PST Mon Nov 22 2021 ...WIND ADVISORY HAS EXPIRED... Winds have decreased but continue rather breezy in foothills this morning, with gusts generally below 35 mph. These will continue to decrease during the day. $$ 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 20, 3:00 AM PST | Dense Fog Advisory | SGX | Riverside, San Bernardino, San Diego | 6 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.