Alert archive / California / Wind Advisories in 2021
Wind Advisory 6, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this wind advisory at Mar 29, 2021, 2:56 AM PDT for San Mateo County, Santa Clara County, Santa Cruz County, California. It took effect at Mar 29, 2021, 8:00 PM PDT. It was in force for 14 hr.
The area
The counties it named.
The facts
- Issued
- Mar 29, 2021, 2:56 AM PDT (09:56 UTC)
- In effect from
- Mar 29, 2021, 8:00 PM PDT
- Expired
- Mar 30, 2021, 10:00 AM PDT
- In force
- 14 hr
- Issued by
- NWS San Francisco Bay Area, CA
Counties San Mateo County, CA, Santa Clara County, CA, Santa Cruz County, CA
The radar
The San Francisco radar (KMUX), 14 km from the middle of the area, began a volume at 09:54 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
Oakland, CA (KOAK), launched 00:00Z, 9.9 hours before the alert went out and 58 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
- 3471 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
424 WWUS76 KMTR 290956 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 256 AM PDT Mon Mar 29 2021 CAZ507-291800- /O.NEW.KMTR.WI.Y.0006.210330T0300Z-210330T1700Z/ North Bay Mountains- Including the cities of Angwin, Lagunitas-Forest Knolls, and Woodacre 256 AM PDT Mon Mar 29 2021 ...WIND ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 10 AM PDT TUESDAY... * WHAT...North winds 15 to 25 mph with gusts up to 45 mph expected, locally up to 55 mph at highest peaks. * WHERE...North Bay Mountains. * WHEN...From 8 PM this evening to 10 AM PDT Tuesday. * IMPACTS...Strong wind gusts have the potential to knock down power lines and trees along with creating hazardous driving conditions. Be sure to plan accordingly if you travel in these areas and to secure light property outdoors including temporary outdoor structures. Have cell phones charged and flashlights handy if power outages occur. * ADDITIONAL DETAILS...Winds should diminish by Tuesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ511-291800- /O.NEW.KMTR.WI.Y.0006.210330T0300Z-210330T1700Z/ East Bay Hills and the Diablo Range- Including the city of Blackhawk 256 AM PDT Mon Mar 29 2021 ...WIND ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 10 AM PDT TUESDAY... * WHAT...North winds 15 to 25 mph with gusts up to 45 mph expected, locally up to 55 mph at highest peaks. * WHERE...East Bay Hills and the Diablo Range. * WHEN...From 8 PM this evening to 10 AM PDT Tuesday. * IMPACTS...Strong wind gusts have the potential to knock down power lines and trees along with creating hazardous driving conditions. Be sure to plan accordingly if you travel in these areas and to secure light property outdoors including temporary outdoor structures. Have cell phones charged and flashlights handy if power outages occur. * ADDITIONAL DETAILS...Winds should diminish by Tuesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ509-512-291800- /O.NEW.KMTR.WI.Y.0006.210330T0300Z-210330T1700Z/ San Francisco Peninsula Coast-Santa Cruz Mountains- Including the cities of Pacifica, Scotts Valley, Boulder Creek, and Day Valley 256 AM PDT Mon Mar 29 2021 ...WIND ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 10 AM PDT TUESDAY... * WHAT...North winds 15 to 25 mph with gusts up to 40 mph expected, locally up to 45 mph at highest peaks. * WHERE...San Francisco Peninsula Coast and Santa Cruz Mountains. * WHEN...From 8 PM this evening to 10 AM PDT Tuesday. * IMPACTS...Strong wind gusts have the potential to knock down power lines and trees along with creating hazardous driving conditions. Be sure to plan accordingly if you travel in these areas and to secure light property outdoors including temporary outdoor structures. Have cell phones charged and flashlights handy if power outages occur. * ADDITIONAL DETAILS...Winds should diminish by Tuesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit http://weather.gov/mtr
3 follow-up statements
541 WWUS76 KMTR 291732 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 1032 AM PDT Mon Mar 29 2021 CAZ507-300400- /O.CON.KMTR.WI.Y.0006.210330T0300Z-210330T1700Z/ North Bay Mountains- Including the cities of Angwin, Lagunitas-Forest Knolls, and Woodacre 1032 AM PDT Mon Mar 29 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM PDT TUESDAY... * WHAT...North winds 15 to 25 mph with gusts up to 45 mph expected, locally up to 55 mph at highest peaks. * WHERE...North Bay Mountains. * WHEN...From 8 PM this evening to 10 AM PDT Tuesday. * IMPACTS...Strong wind gusts have the potential to knock down power lines and trees along with creating hazardous driving conditions. Be sure to plan accordingly if you travel in these areas and to secure light property outdoors including temporary outdoor structures. Have cell phones charged and flashlights handy if power outages occur. * ADDITIONAL DETAILS...Winds should diminish by Tuesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ511-300400- /O.CON.KMTR.WI.Y.0006.210330T0300Z-210330T1700Z/ East Bay Hills and the Diablo Range- Including the city of Blackhawk 1032 AM PDT Mon Mar 29 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM PDT TUESDAY... * WHAT...North winds 15 to 25 mph with gusts up to 45 mph expected, locally up to 55 mph at highest peaks. * WHERE...East Bay Hills and the Diablo Range. * WHEN...From 8 PM this evening to 10 AM PDT Tuesday. * IMPACTS...Strong wind gusts have the potential to knock down power lines and trees along with creating hazardous driving conditions. Be sure to plan accordingly if you travel in these areas and to secure light property outdoors including temporary outdoor structures. Have cell phones charged and flashlights handy if power outages occur. * ADDITIONAL DETAILS...Winds should diminish by Tuesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ509-512-300400- /O.CON.KMTR.WI.Y.0006.210330T0300Z-210330T1700Z/ San Francisco Peninsula Coast-Santa Cruz Mountains- Including the cities of Pacifica, Scotts Valley, Boulder Creek, and Day Valley 1032 AM PDT Mon Mar 29 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM PDT TUESDAY... * WHAT...North winds 15 to 25 mph with gusts up to 40 mph expected, locally up to 45 mph at highest peaks. * WHERE...San Francisco Peninsula Coast and Santa Cruz Mountains. * WHEN...From 8 PM this evening to 10 AM PDT Tuesday. * IMPACTS...Strong wind gusts have the potential to knock down power lines and trees along with creating hazardous driving conditions. Be sure to plan accordingly if you travel in these areas and to secure light property outdoors including temporary outdoor structures. Have cell phones charged and flashlights handy if power outages occur. * ADDITIONAL DETAILS...Winds should diminish by Tuesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit http://weather.gov/mtr
418 WWUS76 KMTR 300347 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 847 PM PDT Mon Mar 29 2021 CAZ507-301700- /O.CON.KMTR.WI.Y.0006.000000T0000Z-210330T1700Z/ North Bay Mountains- Including the cities of Angwin, Lagunitas-Forest Knolls, and Woodacre 847 PM PDT Mon Mar 29 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 AM PDT TUESDAY... * WHAT...North winds 15 to 30 mph with gusts up to 45 mph expected, locally up to 55 mph at highest peaks. * WHERE...North Bay Mountains. * WHEN...Until 10 AM PDT Tuesday. * IMPACTS...Strong wind gusts have the potential to knock down power lines and trees along with creating hazardous driving conditions. Be sure to secure light property outdoors including temporary outdoor structures. Have cell phones charged and flashlights handy if power outages occur. * ADDITIONAL DETAILS...Winds should diminish by Tuesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ511-301700- /O.CON.KMTR.WI.Y.0006.000000T0000Z-210330T1700Z/ East Bay Hills and the Diablo Range- Including the city of Blackhawk 847 PM PDT Mon Mar 29 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 AM PDT TUESDAY... * WHAT...North winds 15 to 25 mph with gusts up to 45 mph expected, locally up to 55 mph at highest peaks. * WHERE...East Bay Hills and the Diablo Range. * WHEN...Until 10 AM PDT Tuesday. * IMPACTS...Strong wind gusts have the potential to knock down power lines and trees along with creating hazardous driving conditions. Be sure to secure light property outdoors including temporary outdoor structures. Have cell phones charged and flashlights handy if power outages occur. * ADDITIONAL DETAILS...Winds should diminish by Tuesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ509-512-301700- /O.CON.KMTR.WI.Y.0006.000000T0000Z-210330T1700Z/ San Francisco Peninsula Coast-Santa Cruz Mountains- Including the cities of Pacifica, Scotts Valley, Boulder Creek, and Day Valley 847 PM PDT Mon Mar 29 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 AM PDT TUESDAY... * WHAT...North winds 15 to 25 mph with gusts up to 40 mph expected, locally up to 45 mph at highest peaks. * WHERE...San Francisco Peninsula Coast and Santa Cruz Mountains. * WHEN...Until 10 AM PDT Tuesday. * IMPACTS...Strong wind gusts have the potential to knock down power lines and trees along with creating hazardous driving conditions. Be sure to secure light property outdoors including temporary outdoor structures. Have cell phones charged and flashlights handy if power outages occur. * ADDITIONAL DETAILS...Winds should diminish by Tuesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit http://weather.gov/mtr
564 WWUS76 KMTR 301639 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 939 AM PDT Tue Mar 30 2021 CAZ507-301745- /O.EXP.KMTR.WI.Y.0006.000000T0000Z-210330T1700Z/ North Bay Mountains- Including the cities of Angwin, Lagunitas-Forest Knolls, and Woodacre 939 AM PDT Tue Mar 30 2021 ...WIND ADVISORY WILL EXPIRE AT 10 AM PDT THIS MORNING... While strong and gusty winds prevail in elevations above 2,500 feet, winds in the lower elevations are no longer anticipated to reach advisory criteria. $$ CAZ511-301745- /O.EXP.KMTR.WI.Y.0006.000000T0000Z-210330T1700Z/ East Bay Hills and the Diablo Range- Including the city of Blackhawk 939 AM PDT Tue Mar 30 2021 ...WIND ADVISORY WILL EXPIRE AT 10 AM PDT THIS MORNING... While strong and gusty winds prevail in elevations above 2,500 feet, winds in the lower elevations are no longer anticipated to reach advisory criteria. $$ CAZ509-512-301745- /O.EXP.KMTR.WI.Y.0006.000000T0000Z-210330T1700Z/ San Francisco Peninsula Coast-Santa Cruz Mountains- Including the cities of Pacifica, Scotts Valley, Boulder Creek, and Day Valley 939 AM PDT Tue Mar 30 2021 ...WIND ADVISORY WILL EXPIRE AT 10 AM PDT THIS MORNING... While strong and gusty winds prevail in elevations above 2,500 feet, winds in the lower elevations are no longer anticipated to reach advisory criteria. $$ For more information from the National Weather Service visit http://weather.gov/mtr
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 8:41 PM PDT | Small Craft Advisory | MTR | 24 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.