Alert archive / California / Wind Advisories in 2021
Wind Advisory 5, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this wind advisory at Mar 14, 2021, 1:04 PM PDT for 8 counties in California. It took effect at Mar 14, 2021, 10:00 PM PDT. It was in force for 16 hr.
The area
The counties it named.
The facts
- Issued
- Mar 14, 2021, 1:04 PM PDT (20:04 UTC)
- In effect from
- Mar 14, 2021, 10:00 PM PDT
- Expired
- Mar 15, 2021, 2:00 PM PDT
- In force
- 16 hr
- Issued by
- NWS San Francisco Bay Area, CA
Counties Alameda County, CA, City and County of San Francisco, CA, Contra Costa County, CA, Marin County, CA, San Mateo County, CA, Santa Clara County, CA, Santa Cruz County, CA, Sonoma County, CA
The radar
The San Francisco radar (KMUX), 69 km from the middle of the area, began a volume at 20:06 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 12:00Z, 8.1 hours before the alert went out and 6 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
- 4 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 823 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
438 WWUS76 KMTR 142004 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 104 PM PDT Sun Mar 14 2021 CAZ006-505-508-509-150500- /O.NEW.KMTR.WI.Y.0005.210315T0500Z-210315T1800Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Bay Shoreline-San Francisco Peninsula Coast- Including the cities of San Francisco, Tamalpais-Homestead, Sausalito, Oakland, Fremont, Hayward, Daly City, Berkeley, and Pacifica 104 PM PDT Sun Mar 14 2021 ...WIND ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 11 AM PDT MONDAY... * WHAT...Northwest winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Bay Shoreline and San Francisco Peninsula Coast. * WHEN...From 10 PM this evening to 11 AM PDT Monday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Have cell phones charged and flashlights handy if power outages occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit http://weather.gov/mtr
4 follow-up statements
776 WWUS76 KMTR 150402 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 902 PM PDT Sun Mar 14 2021 CAZ006-505-508-509-151800- /O.CON.KMTR.WI.Y.0005.210315T0500Z-210315T1800Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Bay Shoreline-San Francisco Peninsula Coast- Including the cities of San Francisco, Tamalpais-Homestead, Sausalito, Oakland, Fremont, Hayward, Daly City, Berkeley, and Pacifica 902 PM PDT Sun Mar 14 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT MONDAY... * WHAT...Northwest winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Bay Shoreline and San Francisco Peninsula Coast. * WHEN...From 10 PM this evening to 11 AM PDT Monday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Have cell phones charged and flashlights handy if power outages occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit http://weather.gov/mtr
128 WWUS76 KMTR 150930 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 230 AM PDT Mon Mar 15 2021 CAZ506-516-528-151800- /O.NEW.KMTR.FR.Y.0001.210316T1000Z-210316T1600Z/ North Bay Interior Valleys- Southern Salinas Valley/Arroyo Seco and Lake San Antonio- Northern Salinas Valley/Hollister Valley and Carmel Valley- Including the cities of Santa Rosa, South Santa Rosa, Napa, San Rafael, Petaluma, Novato, Rohnert Park, Greenfield, King City, and Salinas 230 AM PDT Mon Mar 15 2021 ...FROST ADVISORY IN EFFECT FROM 3 AM TO 9 AM PDT TUESDAY... * WHAT...Temperatures in the upper 20s to low 30s will result in frost formation. * WHERE...North Bay Interior Valleys, Southern Salinas Valley/Arroyo Seco and Lake San Antonio, and the Hollister Valley. * WHEN...From 3 AM to 9 AM PDT Tuesday. * IMPACTS...Frost could kill sensitive outdoor vegetation, including budding grapevines, if left uncovered. * ADDITIONAL DETAILS...Please note that even though the Northern Salinas Valley Zone is included, this Advisory is focused on the Hollister Valley portion of that zone whereas Carmel Valley and the Northern Salinas Valley will likely only see localized areas of frost or none at all. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CAZ006-505-508-509-151800- /O.CON.KMTR.WI.Y.0005.000000T0000Z-210315T1800Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Bay Shoreline-San Francisco Peninsula Coast- Including the cities of San Francisco, Tamalpais-Homestead, Sausalito, Oakland, Fremont, Hayward, Daly City, Berkeley, and Pacifica 230 AM PDT Mon Mar 15 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT THIS MORNING... * WHAT...Northwest winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Bay Shoreline and San Francisco Peninsula Coast. * WHEN...From 10 PM this evening to 11 AM PDT Monday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Have cell phones charged and flashlights handy if power outages occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit http://weather.gov/mtr
230 WWUS76 KMTR 151742 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 1042 AM PDT Mon Mar 15 2021 CAZ508-151845- /O.CAN.KMTR.WI.Y.0005.000000T0000Z-210315T1800Z/ San Francisco Bay Shoreline- Including the cities of Oakland, Fremont, Hayward, Daly City, and Berkeley 1042 AM PDT Mon Mar 15 2021 ...WIND ADVISORY IS CANCELLED... Winds will continue to be breezy, with occasional gusts up to 35 mph through the afternoon, and will gradually subside this evening. . $$ CAZ006-505-509-152100- /O.EXT.KMTR.WI.Y.0005.000000T0000Z-210315T2100Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Including the cities of San Francisco, Tamalpais-Homestead, Sausalito, and Pacifica 1042 AM PDT Mon Mar 15 2021 ...WIND ADVISORY NOW IN EFFECT UNTIL 2 PM PDT THIS AFTERNOON... * WHAT...Northwest winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, and San Francisco Peninsula Coast. * WHEN...Until 2 PM PDT this afternoon. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Winds will gradually weaken through the day. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ506-516-528-152100- /O.CON.KMTR.FR.Y.0001.210316T1000Z-210316T1600Z/ North Bay Interior Valleys- Southern Salinas Valley/Arroyo Seco and Lake San Antonio- Northern Salinas Valley/Hollister Valley and Carmel Valley- Including the cities of Santa Rosa, South Santa Rosa, Napa, San Rafael, Petaluma, Novato, Rohnert Park, Greenfield, King City, and Salinas 1042 AM PDT Mon Mar 15 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 9 AM PDT TUESDAY... * WHAT...Temperatures in the upper 20s to low 30s will result in frost formation. * WHERE...North Bay Interior Valleys, Southern Salinas Valley/Arroyo Seco and Lake San Antonio, and the Hollister Valley. * WHEN...From 3 AM to 9 AM PDT Tuesday. * IMPACTS...Frost could kill sensitive outdoor vegetation, including budding grapevines, if left uncovered. * ADDITIONAL DETAILS...Please note that even though the Northern Salinas Valley Zone is included, this Advisory is focused on the Hollister Valley portion of that zone whereas Carmel Valley and the Northern Salinas Valley will likely only see localized areas of frost or none at all. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit http://weather.gov/mtr
974 WWUS76 KMTR 152051 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 151 PM PDT Mon Mar 15 2021 CAZ006-505-509-152200- /O.EXP.KMTR.WI.Y.0005.000000T0000Z-210315T2100Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Including the cities of San Francisco, Tamalpais-Homestead, Sausalito, and Pacifica 151 PM PDT Mon Mar 15 2021 ...WIND ADVISORY WILL EXPIRE AT 2 PM PDT THIS AFTERNOON... Winds have peaked and will gradually subside throughout the afternoon and evening. Therefore, the advisory will be allowed to expire. $$ CAZ506-516-528-160500- /O.CON.KMTR.FR.Y.0001.210316T1000Z-210316T1600Z/ North Bay Interior Valleys- Southern Salinas Valley/Arroyo Seco and Lake San Antonio- Northern Salinas Valley/Hollister Valley and Carmel Valley- Including the cities of Santa Rosa, South Santa Rosa, Napa, San Rafael, Petaluma, Novato, Rohnert Park, Greenfield, King City, and Salinas 151 PM PDT Mon Mar 15 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 9 AM PDT TUESDAY... * WHAT...Temperatures in the upper 20s to low 30s will result in frost formation. * WHERE...North Bay Interior Valleys, Southern Salinas Valley/Arroyo Seco and Lake San Antonio, and the Hollister Valley. * WHEN...From 3 AM to 9 AM PDT Tuesday. * IMPACTS...Frost could kill sensitive outdoor vegetation, including budding grapevines, if left uncovered. * ADDITIONAL DETAILS...Please note that even though the Northern Salinas Valley Zone is included, this Advisory is focused on the Hollister Valley portion of that zone whereas Carmel Valley and the Northern Salinas Valley will likely only see localized areas of frost or none at all. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ 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 14, 3:02 AM PDT | Gale Warning | MTR | 48 hr | |
| Mar 14, 12:51 PM PDT | Storm Warning | MTR | 20 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.