Alert archive / California / Wind Advisories in 2021
Wind Advisory 2, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this wind advisory at Jan 23, 2021, 12:53 PM PST for 6 counties in California. It took effect at Jan 24, 2021, 7:00 PM PST. It was in force for 15 hr.
The area
The counties it named.
The facts
- Issued
- Jan 23, 2021, 12:53 PM PST (20:53 UTC)
- In effect from
- Jan 24, 2021, 7:00 PM PST
- Expired
- Jan 25, 2021, 10:00 AM PST
- In force
- 15 hr
- Issued by
- NWS San Francisco Bay Area, CA
Counties City and County of San Francisco, CA, Marin County, CA, Monterey County, CA, San Mateo County, CA, Santa Cruz County, CA, Sonoma County, CA
The radar
The San Francisco radar (KMUX), 53 km from the middle of the area, began a volume at 20:56 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
Reno, NV (KREV), launched 12:00Z, 8.9 hours before the alert went out and 424 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
- 801 m above ground
- 0-6 km bulk shear
- 0 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
257 WWUS76 KMTR 232053 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 1253 PM PST Sat Jan 23 2021 CAZ006-505-509-530-240600- /O.NEW.KMTR.WI.Y.0002.210125T0300Z-210125T1800Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Southern Monterey Bay and Big Sur Coast- Including the cities of San Francisco, Tamalpais-Homestead, Sausalito, Pacifica, Seaside, Monterey, and Marina 1253 PM PST Sat Jan 23 2021 ...WIND ADVISORY IN EFFECT FROM 7 PM SUNDAY TO 10 AM PST MONDAY... * WHAT...Northwest winds 15 to 30 mph with gusts 40 to 50 mph expected. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast and Southern Monterey Bay and Big Sur Coast. * WHEN...From 7 PM Sunday to 10 AM PST Monday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Burned trees in recent burn scars will be particularly susceptible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit http://weather.gov/mtr
4 follow-up statements
346 WWUS76 KMTR 240537 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 937 PM PST Sat Jan 23 2021 CAZ006-505-509-530-241745- /O.CON.KMTR.WI.Y.0002.210125T0300Z-210125T1800Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Southern Monterey Bay and Big Sur Coast- Including the cities of San Francisco, Tamalpais-Homestead, Sausalito, Pacifica, Seaside, Monterey, and Marina 937 PM PST Sat Jan 23 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM SUNDAY TO 10 AM PST MONDAY... * WHAT...Northwest winds 15 to 30 mph with gusts 40 to 50 mph expected. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast and Southern Monterey Bay and Big Sur Coast. * WHEN...From 7 PM Sunday to 10 AM PST Monday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Burned trees in recent burn scars will be particularly susceptible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit http://weather.gov/mtr
064 WWUS76 KMTR 241847 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 1047 AM PST Sun Jan 24 2021 CAZ006-505-509-530-250600- /O.CON.KMTR.WI.Y.0002.210125T0300Z-210125T1800Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Southern Monterey Bay and Big Sur Coast- Including the cities of San Francisco, Tamalpais-Homestead, Sausalito, Pacifica, Seaside, Monterey, and Marina 1047 AM PST Sun Jan 24 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 10 AM PST MONDAY... * WHAT...Northwest winds 15 to 30 mph with gusts 40 to 50 mph expected. The immediate coastline could see an isolated gust 50 to 60 mph. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast and Southern Monterey Bay and Big Sur Coast. * WHEN...From 7 PM Sunday to 10 AM PST Monday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Burned trees in recent burn scars will be particularly susceptible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit http://weather.gov/mtr
834 WWUS76 KMTR 251055 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 255 AM PST Mon Jan 25 2021 CAZ006-505-509-251915- /O.NEW.KMTR.HW.A.0002.210127T0300Z-210127T1800Z/ /O.CON.KMTR.WI.Y.0002.000000T0000Z-210125T1800Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Including the cities of San Francisco, Tamalpais-Homestead, Sausalito, and Pacifica 255 AM PST Mon Jan 25 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... ...HIGH WIND WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Wind Advisory, northwest winds 20 to 30 mph with gusts up to 45 mph. For the High Wind Watch, south winds 30 to 40 mph with gusts up to 60 mph possible. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore and San Francisco Peninsula Coast. * WHEN...For the Wind Advisory, until 10 AM PST this morning. For the High Wind Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ CAZ530-251915- /O.NEW.KMTR.HW.A.0002.210127T0300Z-210128T1500Z/ /O.CON.KMTR.WI.Y.0002.000000T0000Z-210125T1800Z/ Southern Monterey Bay and Big Sur Coast- Including the cities of Seaside, Monterey, and Marina 255 AM PST Mon Jan 25 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... ...HIGH WIND WATCH IN EFFECT FROM TUESDAY EVENING THROUGH THURSDAY MORNING... * WHAT...For the Wind Advisory, northwest winds 20 to 30 mph with gusts up to 45 mph. For the High Wind Watch, south winds 25 to 35 mph with gusts up to 65 mph possible. * WHERE...Southern Monterey Bay and Big Sur Coast. * WHEN...For the Wind Advisory, until 10 AM PST this morning. For the High Wind Watch, from Tuesday evening through Thursday morning. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ CAZ506>508-510>513-251915- /O.NEW.KMTR.HW.A.0002.210127T0300Z-210127T1800Z/ North Bay Interior Valleys-North Bay Mountains- San Francisco Bay Shoreline-East Bay Interior Valleys- East Bay Hills and the Diablo Range-Santa Cruz Mountains- Santa Clara Valley Including San Jose- Including the cities of Santa Rosa, South Santa Rosa, Napa, San Rafael, Petaluma, Novato, Rohnert Park, Angwin, Lagunitas-Forest Knolls, Woodacre, Oakland, Fremont, Hayward, Daly City, Berkeley, Concord, Antioch, Livermore, Walnut Creek, Pleasanton, Pittsburg, San Ramon, Blackhawk, Scotts Valley, Boulder Creek, Day Valley, and San Jose 255 AM PST Mon Jan 25 2021 ...HIGH WIND WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...South winds 20 to 30 mph with gusts 50 to 60 mph possible. Locally up to 70 mph over the highest peaks. * WHERE...North Bay, San Francisco Bay Shoreline, East Bay, Santa Cruz Mountains, and South Bay. * WHEN...From Tuesday evening through Wednesday morning. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. Burned trees in recent burn scars will be particularly susceptible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ CAZ517-518-528-529-251915- /O.NEW.KMTR.HW.A.0002.210127T0300Z-210128T1500Z/ Santa Lucia Mountains and Los Padres National Forest- Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park- Northern Salinas Valley/Hollister Valley and Carmel Valley- Northern Monterey Bay- Including the cities of Salinas, Santa Cruz, Watsonville, and Live Oak 255 AM PST Mon Jan 25 2021 ...HIGH WIND WATCH IN EFFECT FROM TUESDAY EVENING THROUGH THURSDAY MORNING... * WHAT...South winds 25 to 35 mph with gusts up to 70 mph possible. * WHERE...Santa Lucia Mountains and Los Padres National Forest, Mountains Of San Benito County and Interior Monterey County Including Pinnacles National Park, Northern Salinas Valley/Hollister Valley and Carmel Valley and Northern Monterey Bay. * WHEN...From Tuesday evening through Thursday morning. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. Burned trees in recent burn scars will be particularly susceptible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ For more information from the National Weather Service visit http://weather.gov/mtr
669 WWUS76 KMTR 251750 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 950 AM PST Mon Jan 25 2021 CAZ006-505-509-252300- /O.EXP.KMTR.WI.Y.0002.000000T0000Z-210125T1800Z/ /O.CON.KMTR.HW.A.0002.210127T0300Z-210127T1800Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Including the cities of San Francisco, Tamalpais-Homestead, Sausalito, and Pacifica 950 AM PST Mon Jan 25 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... ...WIND ADVISORY WILL EXPIRE AT 10 AM PST THIS MORNING... * WHAT...South winds 30 to 40 mph with gusts up to 60 mph possible. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore and San Francisco Peninsula Coast. * WHEN...For the Wind Advisory, until 10 AM PST this morning. For the High Wind Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...For the Wind Advisory expiring at 10 AM PST this morning, gusty north to northwest winds of 30 to 40 mph will be possible along the coast through this afternoon. Additionally, locally stronger gusts will be possible along coastal ridges and gaps. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ CAZ530-252300- /O.EXP.KMTR.WI.Y.0002.000000T0000Z-210125T1800Z/ /O.CON.KMTR.HW.A.0002.210127T0300Z-210128T1500Z/ Southern Monterey Bay and Big Sur Coast- Including the cities of Seaside, Monterey, and Marina 950 AM PST Mon Jan 25 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM TUESDAY EVENING THROUGH THURSDAY MORNING... ...WIND ADVISORY WILL EXPIRE AT 10 AM PST THIS MORNING... * WHAT...South winds 25 to 35 mph with gusts up to 60 mph possible. * WHERE...Southern Monterey Bay and Big Sur Coast. * WHEN...For the Wind Advisory, until 10 AM PST this morning. For the High Wind Watch, from Tuesday evening through Thursday morning. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...For the Wind Advisory expiring at 10 AM PST this morning, gusty north to northwest winds of 30 to 40 mph will be possible along the coast through this afternoon. Additionally, locally stronger gusts will be possible along coastal ridges and gaps. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ CAZ506>508-510>513-252300- /O.CON.KMTR.HW.A.0002.210127T0300Z-210127T1800Z/ North Bay Interior Valleys-North Bay Mountains- San Francisco Bay Shoreline-East Bay Interior Valleys- East Bay Hills and the Diablo Range-Santa Cruz Mountains- Santa Clara Valley Including San Jose- Including the cities of Santa Rosa, South Santa Rosa, Napa, San Rafael, Petaluma, Novato, Rohnert Park, Angwin, Lagunitas-Forest Knolls, Woodacre, Oakland, Fremont, Hayward, Daly City, Berkeley, Concord, Antioch, Livermore, Walnut Creek, Pleasanton, Pittsburg, San Ramon, Blackhawk, Scotts Valley, Boulder Creek, Day Valley, and San Jose 950 AM PST Mon Jan 25 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...South winds 20 to 30 mph with gusts 50 to 60 mph possible. Locally up to 70 mph over the highest peaks. * WHERE...North Bay, San Francisco Bay Shoreline, East Bay, Santa Cruz Mountains, and South Bay. * WHEN...From Tuesday evening through Wednesday morning. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. Burned trees in recent burn scars will be particularly susceptible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ CAZ517-518-528-529-252300- /O.CON.KMTR.HW.A.0002.210127T0300Z-210128T1500Z/ Santa Lucia Mountains and Los Padres National Forest- Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park- Northern Salinas Valley/Hollister Valley and Carmel Valley- Northern Monterey Bay- Including the cities of Salinas, Santa Cruz, Watsonville, and Live Oak 950 AM PST Mon Jan 25 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM TUESDAY EVENING THROUGH THURSDAY MORNING... * WHAT...South winds 25 to 35 mph with gusts up to 70 mph possible. * WHERE...Santa Lucia Mountains and Los Padres National Forest, Mountains Of San Benito County and Interior Monterey County Including Pinnacles National Park, Northern Salinas Valley/Hollister Valley and Carmel Valley and Northern Monterey Bay. * WHEN...From Tuesday evening through Thursday morning. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. Burned trees in recent burn scars will be particularly susceptible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ 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 |
|---|---|---|---|---|
| Jan 23, 3:27 AM PST | Gale Watch | MTR | 10 hr | |
| Jan 23, 3:27 AM PST | Small Craft Advisory | MTR | 36 hr | |
| Jan 23, 1:15 PM PST | Gale Warning | MTR | 62 hr | |
| Jan 23, 1:15 PM PST | Small Craft Advisory | MTR | 32 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.