Alert archive / California / Wind Advisories in 2023
Wind Advisory 12, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this wind advisory at Feb 22, 2023, 12:55 PM PST for 7 counties in California. It took effect at Feb 23, 2023, 4:00 PM PST. It was in force for 17 hr.
The area
The counties it named.
The facts
- Issued
- Feb 22, 2023, 12:55 PM PST (20:55 UTC)
- In effect from
- Feb 23, 2023, 4:00 PM PST
- Expired
- Feb 24, 2023, 9:00 AM PST
- In force
- 17 hr
- Issued by
- NWS San Francisco Bay Area, CA
Counties Alameda County, CA, Contra Costa County, CA, Monterey County, CA, San Benito County, CA, San Mateo County, CA, Santa Clara County, CA, Santa Cruz County, CA
The radar
The San Francisco radar (KMUX), 12 km from the middle of the area, began a volume at 20:58 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, 8.9 hours before the alert went out and 74 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
- 1192 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
337 WWUS76 KMTR 222055 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 1255 PM PST Wed Feb 22 2023 CAZ516>518-230500- /O.NEW.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ /O.CON.KMTR.FZ.W.0007.230223T0800Z-230223T1700Z/ Southern Salinas Valley...Arroyo Seco...and Lake San Antonio- Santa Lucia Mountains and Los Padres National Forest- Mountains of San Benito and Interior Monterey County including Pinnacles National Park- 1255 PM PST Wed Feb 22 2023 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST THURSDAY... ...WIND ADVISORY IN EFFECT FROM 4 PM THURSDAY TO 4 PM PST FRIDAY... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 28 expected. For the Wind Advisory, south winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Southern Salinas Valley, Arroyo Seco, and Lake San Antonio, Santa Lucia Mountains and Los Padres National Forest and Mountains of San Benito and Interior Monterey County including Pinnacles National Park. * WHEN...For the Freeze Warning, from midnight tonight to 9 AM PST Thursday. For the Wind Advisory, from 4 PM Thursday to 4 PM PST Friday. * 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. && $$ CAZ510-512-514-515-230500- /O.NEW.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ /O.CON.KMTR.FZ.W.0007.230223T0800Z-230223T1700Z/ East Bay Interior Valleys-Santa Cruz Mountains- Eastern Santa Clara Hills-East Bay Hills- 1255 PM PST Wed Feb 22 2023 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST THURSDAY... ...WIND ADVISORY IN EFFECT FROM 4 PM THURSDAY TO 4 PM PST FRIDAY... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 31 expected. For the Wind Advisory, south winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...East Bay Interior Valleys, Santa Cruz Mountains, Eastern Santa Clara Hills and East Bay Hills. * WHEN...For the Freeze Warning, from midnight tonight to 9 AM PST Thursday. For the Wind Advisory, from 4 PM Thursday to 4 PM PST Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ CAZ503-504-506-513-230500- /O.CON.KMTR.FZ.W.0007.230223T0800Z-230223T1700Z/ Sonoma Coastal Range-North Bay Interior Mountains- North Bay Interior Valleys- Santa Clara Valley...including San Jose- 1255 PM PST Wed Feb 22 2023 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST THURSDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Sonoma Coastal Range, North Bay Interior Mountains, North Bay Interior Valleys and Santa Clara Valley, including San Jose. * WHEN...From midnight tonight to 9 AM PST Thursday. * 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. && $$ CAZ528-530-230500- /O.NEW.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ /O.CON.KMTR.FR.Y.0007.230223T0800Z-230223T1700Z/ Northern Salinas Valley...Hollister Valley...and Carmel Valley- Southern Monterey Bay and Big Sur Coast- 1255 PM PST Wed Feb 22 2023 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST THURSDAY... ...WIND ADVISORY IN EFFECT FROM 4 PM THURSDAY TO 4 PM PST FRIDAY... * WHAT...For the Wind Advisory, south winds 15 to 25 mph with gusts up to 45 mph expected. For the Frost Advisory, temperatures as low as 34 will result in frost formation. * WHERE...Northern Salinas Valley, Hollister Valley, and Carmel Valley and Southern Monterey Bay and Big Sur Coast. * WHEN...For the Wind Advisory, from 4 PM Thursday to 4 PM PST Friday. For the Frost Advisory, from midnight tonight to 9 AM PST Thursday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. && $$ CAZ509-529-230500- /O.NEW.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ /O.CON.KMTR.FR.Y.0007.230223T0800Z-230223T1700Z/ San Francisco Peninsula Coast-Northern Monterey Bay- 1255 PM PST Wed Feb 22 2023 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST THURSDAY... ...WIND ADVISORY IN EFFECT FROM 4 PM THURSDAY TO 4 PM PST FRIDAY... * WHAT...For the Frost Advisory, temperatures as low as 35 will result in frost formation. For the Wind Advisory, south winds 15 to 25 mph with gusts up to 40 mph expected. * WHERE...San Francisco Peninsula Coast and Northern Monterey Bay. * WHEN...For the Frost Advisory, from midnight tonight to 9 AM PST Thursday. For the Wind Advisory, from 4 PM Thursday to 4 PM PST Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost could kill sensitive outdoor vegetation if left uncovered. 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. && $$ CAZ006-502-505-508-230500- /O.CON.KMTR.FR.Y.0007.230223T0800Z-230223T1700Z/ San Francisco-Marin Coastal Range- Coastal North Bay...Including Point Reyes National Seashore- San Francisco Bay Shoreline- 1255 PM PST Wed Feb 22 2023 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST THURSDAY... * WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...San Francisco, Marin Coastal Range, Coastal North Bay, Including Point Reyes National Seashore and San Francisco Bay Shoreline. * WHEN...From midnight tonight to 9 AM PST Thursday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/mtr
6 follow-up statements
006 WWUS76 KMTR 230344 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 744 PM PST Wed Feb 22 2023 CAZ510-512-514-515-231700- /O.CON.KMTR.FZ.W.0007.230223T0800Z-230223T1700Z/ /O.CON.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ East Bay Interior Valleys-Santa Cruz Mountains- Eastern Santa Clara Hills-East Bay Hills- 744 PM PST Wed Feb 22 2023 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST THURSDAY... ...WIND ADVISORY REMAINS IN EFFECT FROM 4 PM THURSDAY TO 4 PM PST FRIDAY... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 31 expected. For the Wind Advisory, south winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...East Bay Interior Valleys, Santa Cruz Mountains, Eastern Santa Clara Hills and East Bay Hills. * WHEN...For the Freeze Warning, from midnight tonight to 9 AM PST Thursday. For the Wind Advisory, from 4 PM Thursday to 4 PM PST Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Trees could be blown down and power outages may result. Frost and freeze conditions will impact unsheltered/marginally sheltered populations, 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. && $$ CAZ516>518-231700- /O.CON.KMTR.FZ.W.0007.230223T0800Z-230223T1700Z/ /O.CON.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ Southern Salinas Valley...Arroyo Seco...and Lake San Antonio- Santa Lucia Mountains and Los Padres National Forest- Mountains of San Benito and Interior Monterey County including Pinnacles National Park- 744 PM PST Wed Feb 22 2023 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST THURSDAY... ...WIND ADVISORY REMAINS IN EFFECT FROM 4 PM THURSDAY TO 4 PM PST FRIDAY... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 28 expected. For the Wind Advisory, south winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Southern Salinas Valley, Arroyo Seco, and Lake San Antonio, Santa Lucia Mountains and Los Padres National Forest and Mountains of San Benito and Interior Monterey County including Pinnacles National Park. * WHEN...For the Freeze Warning, from midnight tonight to 9 AM PST Thursday. For the Wind Advisory, from 4 PM Thursday to 4 PM PST Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Trees could be blown down and power outages may result. Frost and freeze conditions will impact unsheltered/marginally sheltered populations, kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ CAZ503-504-506-513-231700- /O.CON.KMTR.FZ.W.0007.230223T0800Z-230223T1700Z/ Sonoma Coastal Range-North Bay Interior Mountains- North Bay Interior Valleys- Santa Clara Valley...including San Jose- 744 PM PST Wed Feb 22 2023 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST THURSDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Sonoma Coastal Range, North Bay Interior Mountains, North Bay Interior Valleys and Santa Clara Valley, including San Jose. * WHEN...From midnight tonight to 9 AM PST Thursday. * IMPACTS...Frost and freeze conditions will impact unsheltered/marginally sheltered populations, 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. && $$ CAZ509-529-231700- /O.CON.KMTR.FR.Y.0007.230223T0800Z-230223T1700Z/ /O.CON.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ San Francisco Peninsula Coast-Northern Monterey Bay- 744 PM PST Wed Feb 22 2023 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST THURSDAY... ...WIND ADVISORY REMAINS IN EFFECT FROM 4 PM THURSDAY TO 4 PM PST FRIDAY... * WHAT...For the Frost Advisory, temperatures as low as 35 will result in frost formation. For the Wind Advisory, south winds 15 to 25 mph with gusts up to 40 mph expected. * WHERE...San Francisco Peninsula Coast and Northern Monterey Bay. * WHEN...For the Frost Advisory, from midnight tonight to 9 AM PST Thursday. For the Wind Advisory, from 4 PM Thursday to 4 PM PST Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Trees could be blown down and power outages may result. Frost and freeze conditions will impact unsheltered/marginally sheltered populations, kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. && $$ CAZ528-530-231700- /O.CON.KMTR.FR.Y.0007.230223T0800Z-230223T1700Z/ /O.CON.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ Northern Salinas Valley...Hollister Valley...and Carmel Valley- Southern Monterey Bay and Big Sur Coast- 744 PM PST Wed Feb 22 2023 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST THURSDAY... ...WIND ADVISORY REMAINS IN EFFECT FROM 4 PM THURSDAY TO 4 PM PST FRIDAY... * WHAT...For the Wind Advisory, south winds 15 to 25 mph with gusts up to 45 mph expected. For the Frost Advisory, temperatures as low as 34 will result in frost formation. * WHERE...Northern Salinas Valley, Hollister Valley, and Carmel Valley and Southern Monterey Bay and Big Sur Coast. * WHEN...For the Wind Advisory, from 4 PM Thursday to 4 PM PST Friday. For the Frost Advisory, from midnight tonight to 9 AM PST Thursday. * IMPACTS...Gusty winds could blow around unsecured objects. Trees could be blown down and power outages may result. Frost and freeze conditions will impact unsheltered/marginally sheltered populations, 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. && $$ CAZ006-502-505-508-231700- /O.CON.KMTR.FR.Y.0007.230223T0800Z-230223T1700Z/ San Francisco-Marin Coastal Range- Coastal North Bay...Including Point Reyes National Seashore- San Francisco Bay Shoreline- 744 PM PST Wed Feb 22 2023 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST THURSDAY... * WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...San Francisco, Marin Coastal Range, Coastal North Bay, Including Point Reyes National Seashore and San Francisco Bay Shoreline. * WHEN...From midnight tonight to 9 AM PST Thursday. * IMPACTS...Frost and freeze conditions will impact unsheltered/marginally sheltered populations, kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/mtr
717 WWUS76 KMTR 231135 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 335 AM PST Thu Feb 23 2023 CAZ510-512-514-515-231700- /O.NEW.KMTR.FZ.W.0008.230224T0800Z-230224T1700Z/ /O.CON.KMTR.FZ.W.0007.000000T0000Z-230223T1700Z/ /O.CON.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ East Bay Interior Valleys-Santa Cruz Mountains- Eastern Santa Clara Hills-East Bay Hills- 335 AM PST Thu Feb 23 2023 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... ...WIND ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 PM PST FRIDAY... ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... * WHAT...For the first Freeze Warning, sub-freezing temperatures as low as 30. For the second Freeze Warning, sub-freezing temperatures as low as 30 expected. For the Wind Advisory, south winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...East Bay Interior Valleys, Santa Cruz Mountains, Eastern Santa Clara Hills and East Bay Hills. * WHEN...For the first Freeze Warning, until 9 AM PST this morning. For the second Freeze Warning, from midnight tonight to 9 AM PST Friday. For the Wind Advisory, from 4 PM this afternoon to 4 PM PST Friday. * 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 be hazardous to unsheltered or marginally sheltered populations, 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. && $$ CAZ516>518-231700- /O.NEW.KMTR.FZ.W.0008.230224T0800Z-230224T1700Z/ /O.CON.KMTR.FZ.W.0007.000000T0000Z-230223T1700Z/ /O.CON.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ Southern Salinas Valley...Arroyo Seco...and Lake San Antonio- Santa Lucia Mountains and Los Padres National Forest- Mountains of San Benito and Interior Monterey County including Pinnacles National Park- 335 AM PST Thu Feb 23 2023 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... ...WIND ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 PM PST FRIDAY... ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... * WHAT...For the first Freeze Warning, sub-freezing temperatures as low as 28. For the second Freeze Warning, sub-freezing temperatures as low as 34 expected. For the Wind Advisory, south winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Southern Salinas Valley, Arroyo Seco, and Lake San Antonio, Santa Lucia Mountains and Los Padres National Forest and Mountains of San Benito and Interior Monterey County including Pinnacles National Park. * WHEN...For the first Freeze Warning, until 9 AM PST this morning. For the second Freeze Warning, from midnight tonight to 9 AM PST Friday. For the Wind Advisory, from 4 PM this afternoon to 4 PM PST Friday. * 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 be hazardous to unsheltered or marginally sheltered populations, 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. && $$ CAZ503-504-506-231700- /O.NEW.KMTR.FZ.W.0008.230224T0800Z-230224T1700Z/ /O.CON.KMTR.FZ.W.0007.000000T0000Z-230223T1700Z/ Sonoma Coastal Range-North Bay Interior Mountains- North Bay Interior Valleys- 335 AM PST Thu Feb 23 2023 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... * WHAT...For the first Freeze Warning, sub-freezing temperatures as low as 30. For the second Freeze Warning, sub-freezing temperatures as low as 32 expected. * WHERE...Sonoma Coastal Range, North Bay Interior Mountains and North Bay Interior Valleys. * WHEN...For the first Freeze Warning, until 9 AM PST this morning. For the second Freeze Warning, from midnight tonight to 9 AM PST Friday. * IMPACTS...Frost and freeze conditions will be hazardous to unsheltered or marginally sheltered populations, 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. && $$ CAZ513-231700- /O.NEW.KMTR.FR.Y.0009.230224T0800Z-230224T1700Z/ /O.CON.KMTR.FZ.W.0007.000000T0000Z-230223T1700Z/ Santa Clara Valley...including San Jose- 335 AM PST Thu Feb 23 2023 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 30. For the Frost Advisory, temperatures as low as 35 will result in frost formation. * WHERE...Santa Clara Valley, including San Jose. * WHEN...For the Freeze Warning, until 9 AM PST this morning. For the Frost Advisory, from midnight tonight to 9 AM PST Friday. * IMPACTS...Frost and freeze conditions will be hazardous to unsheltered or marginally sheltered populations, kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ CAZ509-529-231700- /O.NEW.KMTR.FR.Y.0009.230224T0800Z-230224T1700Z/ /O.CON.KMTR.FR.Y.0007.000000T0000Z-230223T1700Z/ /O.CON.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ San Francisco Peninsula Coast-Northern Monterey Bay- 335 AM PST Thu Feb 23 2023 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... ...WIND ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 PM PST FRIDAY... ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... * WHAT...For the first Frost Advisory, temperatures as low as 35 will result in frost formation. For the Wind Advisory, southwest winds 15 to 25 mph with gusts up to 35 mph expected. For the second Frost Advisory, temperatures as low as 35 will result in frost formation. * WHERE...San Francisco Peninsula Coast and Northern Monterey Bay. * WHEN...For the first Frost Advisory, until 9 AM PST this morning. For the Wind Advisory, from 4 PM this afternoon to 4 PM PST Friday. For the second Frost Advisory, from midnight tonight to 9 AM PST Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Cold temperatures will impact unsheltered or marginally sheltered populations. Frost could kill sensitive outdoor vegetation if left uncovered. 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. && $$ CAZ528-530-231700- /O.NEW.KMTR.FR.Y.0009.230224T0800Z-230224T1700Z/ /O.CON.KMTR.FR.Y.0007.000000T0000Z-230223T1700Z/ /O.CON.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ Northern Salinas Valley...Hollister Valley...and Carmel Valley- Southern Monterey Bay and Big Sur Coast- 335 AM PST Thu Feb 23 2023 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... ...WIND ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 PM PST FRIDAY... ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... * WHAT...For the first Frost Advisory, temperatures as low as 34 will result in frost formation. For the Wind Advisory, south winds 15 to 25 mph with gusts up to 45 mph expected. For the second Frost Advisory, temperatures as low as 35 will result in frost formation. * WHERE...Northern Salinas Valley, Hollister Valley, and Carmel Valley and Southern Monterey Bay and Big Sur Coast. * WHEN...For the first Frost Advisory, until 9 AM PST this morning. For the Wind Advisory, from 4 PM this afternoon to 4 PM PST Friday. For the second Frost Advisory, from midnight tonight to 9 AM PST Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Cold temperatures will impact unsheltered or marginally sheltered populations. Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. && $$ CAZ006-502-505-508-231700- /O.NEW.KMTR.FR.Y.0009.230224T0800Z-230224T1700Z/ /O.CON.KMTR.FR.Y.0007.000000T0000Z-230223T1700Z/ San Francisco-Marin Coastal Range- Coastal North Bay...Including Point Reyes National Seashore- San Francisco Bay Shoreline- 335 AM PST Thu Feb 23 2023 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... * WHAT...For the first Frost Advisory, temperatures as low as 35 will result in frost formation. For the second Frost Advisory, temperatures as low as 35 will result in frost formation. * WHERE...San Francisco, Marin Coastal Range, Coastal North Bay, Including Point Reyes National Seashore and San Francisco Bay Shoreline. * WHEN...For the first Frost Advisory, until 9 AM PST this morning. For the second Frost Advisory, from midnight tonight to 9 AM PST Friday. * IMPACTS...Cold temperatures will impact unsheltered or marginally sheltered populations. Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/mtr
882 WWUS76 KMTR 231637 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 837 AM PST Thu Feb 23 2023 CAZ510-512-514-515-240000- /O.EXP.KMTR.FZ.W.0007.000000T0000Z-230223T1700Z/ /O.CON.KMTR.FZ.W.0008.230224T0800Z-230224T1700Z/ /O.CON.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ East Bay Interior Valleys-Santa Cruz Mountains- Eastern Santa Clara Hills-East Bay Hills- 837 AM PST Thu Feb 23 2023 ...WIND ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 PM PST FRIDAY... ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... ...FREEZE WARNING WILL EXPIRE AT 9 AM PST THIS MORNING... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 34 expected. For the Wind Advisory, south winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...East Bay Interior Valleys, Santa Cruz Mountains, Eastern Santa Clara Hills and East Bay Hills. * WHEN...For the first Freeze Warning, until 9 AM PST this morning. For the second Freeze Warning, from midnight tonight to 9 AM PST Friday. For the Wind Advisory, from 4 PM this afternoon to 4 PM PST Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost and freeze conditions will be hazardous to unsheltered or marginally sheltered populations, kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ CAZ516>518-240000- /O.EXP.KMTR.FZ.W.0007.000000T0000Z-230223T1700Z/ /O.CON.KMTR.FZ.W.0008.230224T0800Z-230224T1700Z/ /O.CON.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ Southern Salinas Valley...Arroyo Seco...and Lake San Antonio- Santa Lucia Mountains and Los Padres National Forest- Mountains of San Benito and Interior Monterey County including Pinnacles National Park- 837 AM PST Thu Feb 23 2023 ...WIND ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 PM PST FRIDAY... ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... ...FREEZE WARNING WILL EXPIRE AT 9 AM PST THIS MORNING... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 34 expected. For the Wind Advisory, south winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Southern Salinas Valley, Arroyo Seco, and Lake San Antonio, Santa Lucia Mountains and Los Padres National Forest and Mountains of San Benito and Interior Monterey County including Pinnacles National Park. * WHEN...For the first Freeze Warning, until 9 AM PST this morning. For the second Freeze Warning, from midnight tonight to 9 AM PST Friday. For the Wind Advisory, from 4 PM this afternoon to 4 PM PST Friday. * 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 be hazardous to unsheltered or marginally sheltered populations, 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. && $$ CAZ503-504-506-240000- /O.EXP.KMTR.FZ.W.0007.000000T0000Z-230223T1700Z/ /O.CON.KMTR.FZ.W.0008.230224T0800Z-230224T1700Z/ Sonoma Coastal Range-North Bay Interior Mountains- North Bay Interior Valleys- 837 AM PST Thu Feb 23 2023 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... ...FREEZE WARNING WILL EXPIRE AT 9 AM PST THIS MORNING... * WHAT...Sub-freezing temperatures as low as 32 expected. * WHERE...Sonoma Coastal Range, North Bay Interior Mountains and North Bay Interior Valleys. * WHEN...For the first Freeze Warning, until 9 AM PST this morning. For the second Freeze Warning, from midnight tonight to 9 AM PST Friday. * IMPACTS...Frost and freeze conditions will be hazardous to unsheltered or marginally sheltered populations, kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ CAZ513-240000- /O.EXP.KMTR.FZ.W.0007.000000T0000Z-230223T1700Z/ /O.CON.KMTR.FR.Y.0009.230224T0800Z-230224T1700Z/ Santa Clara Valley...including San Jose- 837 AM PST Thu Feb 23 2023 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... ...FREEZE WARNING WILL EXPIRE AT 9 AM PST THIS MORNING... * WHAT...Temperatures as low as 37 will result in frost formation. * WHERE...Santa Clara Valley, including San Jose. * WHEN...For the Freeze Warning, until 9 AM PST this morning. For the Frost Advisory, from midnight tonight to 9 AM PST Friday. * IMPACTS...Frost and freeze conditions will be hazardous to unsheltered or marginally sheltered populations, kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CAZ509-529-240000- /O.EXP.KMTR.FR.Y.0007.000000T0000Z-230223T1700Z/ /O.CON.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ /O.CON.KMTR.FR.Y.0009.230224T0800Z-230224T1700Z/ San Francisco Peninsula Coast-Northern Monterey Bay- 837 AM PST Thu Feb 23 2023 ...WIND ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 PM PST FRIDAY... ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... ...FROST ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING... * WHAT...For the Wind Advisory, southwest winds 15 to 25 mph with gusts up to 35 mph expected. For the Frost Advisory, temperatures as low as 39 will result in frost formation. * WHERE...San Francisco Peninsula Coast and Northern Monterey Bay. * WHEN...For the first Frost Advisory, until 9 AM PST this morning. For the Wind Advisory, from 4 PM this afternoon to 4 PM PST Friday. For the second Frost Advisory, from midnight tonight to 9 AM PST Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Cold temperatures will impact unsheltered or marginally sheltered populations. Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. && $$ CAZ528-530-240000- /O.EXP.KMTR.FR.Y.0007.000000T0000Z-230223T1700Z/ /O.CON.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ /O.CON.KMTR.FR.Y.0009.230224T0800Z-230224T1700Z/ Northern Salinas Valley...Hollister Valley...and Carmel Valley- Southern Monterey Bay and Big Sur Coast- 837 AM PST Thu Feb 23 2023 ...WIND ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 PM PST FRIDAY... ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... ...FROST ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING... * WHAT...For the Wind Advisory, south winds 15 to 25 mph with gusts up to 45 mph expected. For the Frost Advisory, temperatures as low as 38 will result in frost formation. * WHERE...Northern Salinas Valley, Hollister Valley, and Carmel Valley and Southern Monterey Bay and Big Sur Coast. * WHEN...For the first Frost Advisory, until 9 AM PST this morning. For the Wind Advisory, from 4 PM this afternoon to 4 PM PST Friday. For the second Frost Advisory, from midnight tonight to 9 AM PST Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Cold temperatures will impact unsheltered or marginally sheltered populations. Frost could kill sensitive outdoor vegetation if left uncovered. 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. && $$ CAZ006-502-505-508-240000- /O.EXP.KMTR.FR.Y.0007.000000T0000Z-230223T1700Z/ /O.CON.KMTR.FR.Y.0009.230224T0800Z-230224T1700Z/ San Francisco-Marin Coastal Range- Coastal North Bay...Including Point Reyes National Seashore- San Francisco Bay Shoreline- 837 AM PST Thu Feb 23 2023 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... ...FROST ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING... * WHAT...Temperatures as low as 36 will result in frost formation. * WHERE...San Francisco, Marin Coastal Range, Coastal North Bay, Including Point Reyes National Seashore and San Francisco Bay Shoreline. * WHEN...For the first Frost Advisory, until 9 AM PST this morning. For the second Frost Advisory, from midnight tonight to 9 AM PST Friday. * IMPACTS...Cold temperatures will impact unsheltered or marginally sheltered populations. Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/mtr
848 WWUS76 KMTR 232317 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 317 PM PST Thu Feb 23 2023 CAZ510-512-514-515-241700- /O.CON.KMTR.FZ.W.0008.230224T0800Z-230224T1700Z/ /O.CON.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ East Bay Interior Valleys-Santa Cruz Mountains- Eastern Santa Clara Hills-East Bay Hills- 317 PM PST Thu Feb 23 2023 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST FRIDAY... ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 34 expected. For the Wind Advisory, south winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...East Bay Interior Valleys, Santa Cruz Mountains, Eastern Santa Clara Hills and East Bay Hills. * WHEN...For the Freeze Warning, from midnight tonight to 9 AM PST Friday. For the Wind Advisory, from 4 PM this afternoon to 4 PM PST Friday. * IMPACTS...Gusty winds could blow around unsecured objects and decrease visibility with blowing snow at higher elevations. Tree limbs could be blown down and a few power outages may result. Frost and freeze conditions will be hazardous to unsheltered or marginally sheltered populations, 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. && $$ CAZ516>518-241700- /O.CON.KMTR.FZ.W.0008.230224T0800Z-230224T1700Z/ /O.CON.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ Southern Salinas Valley...Arroyo Seco...and Lake San Antonio- Santa Lucia Mountains and Los Padres National Forest- Mountains of San Benito and Interior Monterey County including Pinnacles National Park- 317 PM PST Thu Feb 23 2023 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST FRIDAY... ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 34 expected. For the Wind Advisory, south winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Southern Salinas Valley, Arroyo Seco, and Lake San Antonio, Santa Lucia Mountains and Los Padres National Forest and Mountains of San Benito and Interior Monterey County including Pinnacles National Park. * WHEN...For the Freeze Warning, from midnight tonight to 9 AM PST Friday. For the Wind Advisory, from 4 PM this afternoon to 4 PM PST Friday. * IMPACTS...Gusty winds could blow around unsecured objects and decrease visibility with blowing snow at higher elevations. Trees could be blown down and power outages may result. Frost and freeze conditions will be hazardous to unsheltered or marginally sheltered populations, kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ CAZ503-504-506-241700- /O.CON.KMTR.FZ.W.0008.230224T0800Z-230224T1700Z/ Sonoma Coastal Range-North Bay Interior Mountains- North Bay Interior Valleys- 317 PM PST Thu Feb 23 2023 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... * WHAT...Sub-freezing temperatures as low as 32 expected. * WHERE...Sonoma Coastal Range, North Bay Interior Mountains and North Bay Interior Valleys. * WHEN...For the Freeze Warning, from midnight tonight to 9 AM PST Friday. * IMPACTS...Frost and freeze conditions will be hazardous to unsheltered or marginally sheltered populations, kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect people, pets, and 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. && $$ CAZ509-529-241700- /O.CON.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ /O.CON.KMTR.FR.Y.0009.230224T0800Z-230224T1700Z/ San Francisco Peninsula Coast-Northern Monterey Bay- 317 PM PST Thu Feb 23 2023 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST FRIDAY... ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... * WHAT...For the Wind Advisory, southwest winds 15 to 25 mph with gusts up to 35 mph expected. For the Frost Advisory, temperatures as low as 39 will result in frost formation. * WHERE...San Francisco Peninsula Coast and Northern Monterey Bay. * WHEN...For the Wind Advisory, from 4 PM this afternoon to 4 PM PST Friday. For the Frost Advisory, from midnight tonight to 9 AM PST Friday. * IMPACTS...Gusty winds could blow around unsecured objects and decrease visibility with blowing snow at higher elevations. Trees could be blown down and power outages may result. Frost and freeze conditions will be hazardous to unsheltered or marginally sheltered populations, kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect people, pets, and tender plants from the cold. && $$ CAZ528-530-241700- /O.CON.KMTR.WI.Y.0012.230224T0000Z-230225T0000Z/ /O.CON.KMTR.FR.Y.0009.230224T0800Z-230224T1700Z/ Northern Salinas Valley...Hollister Valley...and Carmel Valley- Southern Monterey Bay and Big Sur Coast- 317 PM PST Thu Feb 23 2023 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST FRIDAY... ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... * WHAT...For the Wind Advisory, south winds 15 to 25 mph with gusts up to 45 mph expected. For the Frost Advisory, temperatures as low as 38 will result in frost formation. * WHERE...Northern Salinas Valley, Hollister Valley, and Carmel Valley and Southern Monterey Bay and Big Sur Coast. * WHEN...For the Wind Advisory, from 4 PM this afternoon to 4 PM PST Friday. For the Frost Advisory, from midnight tonight to 9 AM PST Friday. * IMPACTS...Gusty winds could blow around unsecured objects and decrease visibility with blowing snow at higher elevations. Trees could be blown down and power outages may result. Frost and freeze conditions will be hazardous to unsheltered or marginally sheltered populations, 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 people, pets, and tender plants from the cold. && $$ CAZ006-502-505-508-513-241700- /O.CON.KMTR.FR.Y.0009.230224T0800Z-230224T1700Z/ San Francisco-Marin Coastal Range- Coastal North Bay...Including Point Reyes National Seashore- San Francisco Bay Shoreline- Santa Clara Valley...including San Jose- 317 PM PST Thu Feb 23 2023 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST FRIDAY... * WHAT...Temperatures as low as 36 will result in frost formation. * WHERE...San Francisco, Marin Coastal Range, Coastal North Bay, Including Point Reyes National Seashore and San Francisco Bay Shoreline. * WHEN...For the Frost Advisory, from midnight tonight to 9 AM PST Friday. * IMPACTS...Cold temperatures will impact unsheltered or marginally sheltered populations. Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect people, pets, and tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/mtr
290 WWUS76 KMTR 241108 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 308 AM PST Fri Feb 24 2023 CAZ512-514-241700- /O.CAN.KMTR.FZ.W.0008.000000T0000Z-230224T1700Z/ /O.NEW.KMTR.FZ.W.0009.230225T0800Z-230225T1700Z/ /O.EXT.KMTR.WI.Y.0012.000000T0000Z-230224T1700Z/ Santa Cruz Mountains-Eastern Santa Clara Hills- 308 AM PST Fri Feb 24 2023 ...WIND ADVISORY NOW IN EFFECT UNTIL 9 AM PST THIS MORNING... ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 30 expected. For the Wind Advisory, south winds 15 to 25 mph with gusts up to 45 mph. * WHERE...Santa Cruz Mountains and Eastern Santa Clara Hills. * WHEN...For the Freeze Warning, from midnight tonight to 9 AM PST Saturday. For the Wind Advisory, until 9 AM PST this morning. * IMPACTS...Gusty winds could blow around unsecured objects and decrease visibility with blowing snow at higher elevations. Tree limbs could be blown down and a few power outages may result. Frost and freeze conditions will be hazardous to unsheltered or marginally sheltered populations, 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. && $$ CAZ517-518-241700- /O.CAN.KMTR.FZ.W.0008.000000T0000Z-230224T1700Z/ /O.NEW.KMTR.FZ.W.0009.230225T0800Z-230225T1700Z/ /O.EXT.KMTR.WI.Y.0012.000000T0000Z-230224T1700Z/ Santa Lucia Mountains and Los Padres National Forest- Mountains of San Benito and Interior Monterey County including Pinnacles National Park- 308 AM PST Fri Feb 24 2023 ...WIND ADVISORY NOW IN EFFECT UNTIL 9 AM PST THIS MORNING... ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 30 expected. For the Wind Advisory, south winds 20 to 30 mph with gusts up to 50 mph. * WHERE...Santa Lucia Mountains and Los Padres National Forest and Mountains of San Benito and Interior Monterey County including Pinnacles National Park. * WHEN...For the Freeze Warning, from midnight tonight to 9 AM PST Saturday. For the Wind Advisory, until 9 AM PST this morning. * IMPACTS...Gusty winds could blow around unsecured objects and decrease visibility with blowing snow at higher elevations. Tree limbs could be blown down and a few power outages may result. Frost and freeze conditions will be hazardous to unsheltered or marginally sheltered populations, kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ CAZ510-515-241700- /O.CAN.KMTR.FZ.W.0008.000000T0000Z-230224T1700Z/ /O.NEW.KMTR.FR.Y.0010.230225T0800Z-230225T1700Z/ /O.EXT.KMTR.WI.Y.0012.000000T0000Z-230224T1700Z/ East Bay Interior Valleys-East Bay Hills- 308 AM PST Fri Feb 24 2023 ...WIND ADVISORY NOW IN EFFECT UNTIL 9 AM PST THIS MORNING... ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY... * WHAT...For the Wind Advisory, southeast winds 15 to 25 mph with gusts up to 45 mph. For the Frost Advisory, temperatures as low as 34 will result in frost formation. * WHERE...East Bay Interior Valleys and East Bay Hills. * WHEN...For the Wind Advisory, until 9 AM PST this morning. For the Frost Advisory, from midnight tonight to 9 AM PST Saturday. * 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 be hazardous to unsheltered or marginally sheltered populations, 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. && $$ CAZ516-241700- /O.CAN.KMTR.FZ.W.0008.000000T0000Z-230224T1700Z/ /O.NEW.KMTR.FR.Y.0010.230225T0800Z-230225T1700Z/ /O.EXT.KMTR.WI.Y.0012.000000T0000Z-230224T1700Z/ Southern Salinas Valley...Arroyo Seco...and Lake San Antonio- 308 AM PST Fri Feb 24 2023 ...WIND ADVISORY NOW IN EFFECT UNTIL 9 AM PST THIS MORNING... ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY... * WHAT...For the Wind Advisory, south winds 15 to 25 mph with gusts up to 45 mph. For the Frost Advisory, temperatures as low as 34 will result in frost formation. * WHERE...Southern Salinas Valley, Arroyo Seco, and Lake San Antonio. * WHEN...For the Wind Advisory, until 9 AM PST this morning. For the Frost Advisory, from midnight tonight to 9 AM PST Saturday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost and freeze conditions will be hazardous to unsheltered or marginally sheltered populations, kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. && $$ CAZ506-241700- /O.CAN.KMTR.FZ.W.0008.000000T0000Z-230224T1700Z/ /O.NEW.KMTR.FZ.W.0009.230225T0800Z-230225T1700Z/ North Bay Interior Valleys- 308 AM PST Fri Feb 24 2023 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY... * WHAT...Sub-freezing temperatures as low as 28 expected. * WHERE...North Bay Interior Valleys. * WHEN...From midnight tonight to 9 AM PST Saturday. * IMPACTS...Frost and freeze conditions will be hazardous to unsheltered or marginally sheltered populations, 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. && $$ CAZ503-504-241700- /O.CAN.KMTR.FZ.W.0008.000000T0000Z-230224T1700Z/ /O.NEW.KMTR.FR.Y.0010.230225T0800Z-230225T1700Z/ Sonoma Coastal Range-North Bay Interior Mountains- 308 AM PST Fri Feb 24 2023 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Sonoma Coastal Range and North Bay Interior Mountains. * WHEN...From midnight tonight to 9 AM PST Saturday. * IMPACTS...Cold temperatures will be hazardous to unsheltered or marginally sheltered populations. Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CAZ509-529-241700- /O.CAN.KMTR.FR.Y.0009.000000T0000Z-230224T1700Z/ /O.NEW.KMTR.FR.Y.0010.230225T0800Z-230225T1700Z/ /O.EXT.KMTR.WI.Y.0012.000000T0000Z-230224T1700Z/ San Francisco Peninsula Coast-Northern Monterey Bay- 308 AM PST Fri Feb 24 2023 ...WIND ADVISORY NOW IN EFFECT UNTIL 9 AM PST THIS MORNING... ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY... * WHAT...For the Wind Advisory, south winds 10 to 20 mph with gusts up to 45 mph. For the Frost Advisory, temperatures as low as 34 will result in frost formation. * WHERE...San Francisco Peninsula Coast and Northern Monterey Bay. * WHEN...For the Wind Advisory, until 9 AM PST this morning. For the Frost Advisory, from midnight tonight to 9 AM PST Saturday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Cold temperatures will be hazardous to unsheltered or marginally sheltered populations. Frost could kill sensitive outdoor vegetation if left uncovered. 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. && $$ CAZ528-530-241700- /O.CAN.KMTR.FR.Y.0009.000000T0000Z-230224T1700Z/ /O.NEW.KMTR.FR.Y.0010.230225T0800Z-230225T1700Z/ /O.EXT.KMTR.WI.Y.0012.000000T0000Z-230224T1700Z/ Northern Salinas Valley...Hollister Valley...and Carmel Valley- Southern Monterey Bay and Big Sur Coast- 308 AM PST Fri Feb 24 2023 ...WIND ADVISORY NOW IN EFFECT UNTIL 9 AM PST THIS MORNING... ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY... * WHAT...For the Wind Advisory, south winds 15 to 25 mph with gusts up to 45 mph. For the Frost Advisory, temperatures as low as 33 will result in frost formation. * WHERE...Northern Salinas Valley, Hollister Valley, and Carmel Valley and Southern Monterey Bay and Big Sur Coast. * WHEN...For the Wind Advisory, until 9 AM PST this morning. For the Frost Advisory, from midnight tonight to 9 AM PST Saturday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Cold temperatures will be hazardous to unsheltered or marginally sheltered populations. Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. && $$ CAZ513-241700- /O.CAN.KMTR.FR.Y.0009.000000T0000Z-230224T1700Z/ /O.NEW.KMTR.FZ.W.0009.230225T0800Z-230225T1700Z/ Santa Clara Valley...including San Jose- 308 AM PST Fri Feb 24 2023 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY... * WHAT...Sub-freezing temperatures as low as 33 expected. * WHERE...Santa Clara Valley, including San Jose. * WHEN...From midnight tonight to 9 AM PST Saturday. * IMPACTS...Frost and freeze conditions will be hazardous to unsheltered or marginally sheltered populations, kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...The coldest temperatures will be across the southern Santa Clara Valley and areas surrounding the urban core of the City of San Jose. 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. && $$ CAZ502-505-508-241700- /O.CAN.KMTR.FR.Y.0009.000000T0000Z-230224T1700Z/ /O.NEW.KMTR.FR.Y.0010.230225T0800Z-230225T1700Z/ Marin Coastal Range- Coastal North Bay...Including Point Reyes National Seashore- San Francisco Bay Shoreline- 308 AM PST Fri Feb 24 2023 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Marin Coastal Range, Coastal North Bay, Including Point Reyes National Seashore and San Francisco Bay Shoreline. * WHEN...From midnight tonight to 9 AM PST Saturday. * IMPACTS...Cold temperatures will be hazardous to unsheltered or marginally sheltered populations. Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CAZ006-241215- /O.CAN.KMTR.FR.Y.0009.000000T0000Z-230224T1700Z/ San Francisco- 308 AM PST Fri Feb 24 2023 ...FROST ADVISORY IS CANCELLED... Temperatures are no longer anticipated to reach advisory criteria. $$ For more information from the National Weather Service visit https://weather.gov/mtr
125 WWUS76 KMTR 241652 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco Bay Area 852 AM PST Fri Feb 24 2023 CAZ512-514-250600- /O.EXP.KMTR.WI.Y.0012.000000T0000Z-230224T1700Z/ /O.CON.KMTR.FZ.W.0009.230225T0800Z-230225T1700Z/ Santa Cruz Mountains-Eastern Santa Clara Hills- 852 AM PST Fri Feb 24 2023 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY... ...WIND ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Santa Cruz Mountains and Eastern Santa Clara Hills. * WHEN...For the Freeze Warning, from midnight tonight to 9 AM PST Saturday. For the Wind Advisory, until 9 AM PST this morning. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ CAZ517-518-250600- /O.EXP.KMTR.WI.Y.0012.000000T0000Z-230224T1700Z/ /O.CON.KMTR.FZ.W.0009.230225T0800Z-230225T1700Z/ Santa Lucia Mountains and Los Padres National Forest- Mountains of San Benito and Interior Monterey County including Pinnacles National Park- 852 AM PST Fri Feb 24 2023 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY... ...WIND ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Santa Lucia Mountains and Los Padres National Forest and Mountains of San Benito and Interior Monterey County including Pinnacles National Park. * WHEN...For the Freeze Warning, from midnight tonight to 9 AM PST Saturday. For the Wind Advisory, until 9 AM PST this morning. * 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. && $$ CAZ509-510-515-529-250600- /O.EXP.KMTR.WI.Y.0012.000000T0000Z-230224T1700Z/ /O.CON.KMTR.FR.Y.0010.230225T0800Z-230225T1700Z/ San Francisco Peninsula Coast-East Bay Interior Valleys- East Bay Hills-Northern Monterey Bay- 852 AM PST Fri Feb 24 2023 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY... ...WIND ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...San Francisco Peninsula Coast and Northern Monterey Bay. * WHEN...For the Wind Advisory, until 9 AM PST this morning. For the Frost Advisory, from midnight tonight to 9 AM PST Saturday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CAZ516-528-530-250600- /O.EXP.KMTR.WI.Y.0012.000000T0000Z-230224T1700Z/ /O.CON.KMTR.FR.Y.0010.230225T0800Z-230225T1700Z/ Southern Salinas Valley...Arroyo Seco...and Lake San Antonio- Northern Salinas Valley...Hollister Valley...and Carmel Valley- Southern Monterey Bay and Big Sur Coast- 852 AM PST Fri Feb 24 2023 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY... ...WIND ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Southern Salinas Valley, Arroyo Seco, and Lake San Antonio. * WHEN...For the Wind Advisory, until 9 AM PST this morning. For the Frost Advisory, from midnight tonight to 9 AM PST Saturday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CAZ506-513-250600- /O.CON.KMTR.FZ.W.0009.230225T0800Z-230225T1700Z/ North Bay Interior Valleys- Santa Clara Valley...including San Jose- 852 AM PST Fri Feb 24 2023 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY... * WHAT...Sub-freezing temperatures as low as 28 expected. * WHERE...North Bay Interior Valleys. * WHEN...From midnight tonight to 9 AM PST Saturday. * IMPACTS...Frost and freeze conditions will be hazardous to unsheltered or marginally sheltered populations, kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ CAZ502>505-508-250600- /O.CON.KMTR.FR.Y.0010.230225T0800Z-230225T1700Z/ Marin Coastal Range-Sonoma Coastal Range- North Bay Interior Mountains- Coastal North Bay...Including Point Reyes National Seashore- San Francisco Bay Shoreline- 852 AM PST Fri Feb 24 2023 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Marin Coastal Range, Coastal North Bay, Including Point Reyes National Seashore and San Francisco Bay Shoreline. * WHEN...From midnight tonight to 9 AM PST Saturday. * IMPACTS...Cold temperatures will be hazardous to unsheltered or marginally sheltered populations. Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/mtr
What forecasters said that day
The local office's own words before this wind advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS San Francisco Bay Area, CA wrote its last area forecast discussion before this wind advisory went out at Feb 22, 10:53 AM PST, 2 hours 2 minutes earlier.
Area forecast discussion, Feb 22, 10:53 AM PST, 2 hours 2 minutes before
Area Forecast Discussion
National Weather Service San Francisco Bay Area
1053 AM PST Wed Feb 22 2023
.SYNOPSIS...Locally strong and gusty winds continue this morning
but significantly diminished from yesterday afternoon and night
and are continuing to gradually decrease. Widely scattered
showers will continue through the day over the southern half of
our area, with just a slight chance farther north. Snow showers
will be possible above 1500 to 2000 feet, and could also be an
isolated thunderstorm and/or some small hail. As the cold upper
level low sinks down the coast from the north, widespread
precipitation is expected to develop over the area late Thursday
afternoon and evening with snow up in the hills.
&&
.DISCUSSION...as of 09:55 AM PST Wednesday...Latest satellite
imagery shows shallow convective cloud bands streaming southward
offshore, and spilling inland south of around the Golden Gate.
KMUX reflectivity data indicating scattered showers in association,
while lightning detection networks have recently been picking up
on some thunderstorms far offshore, about 200 miles SW of the
Monterey Peninsula. Winds are still gusty, though continuing to
gradually lessen. In conjunction with mid-morning temperatures
around the Bays only in the mid-40s however, it's pretty chilly
outside. The freezing level in the 12Z KOAK sounding was only 2640
feet.
Reports of measurable precipitation thus far have been very light
and largely confined to the mountains of Santa Cruz and Monterey
counties, with the largest total being 0.25 inches at the Big Sur
RAWS site. Some early morning webcam images from sites above 2000
feet in Monterey County did show a dusting of snow on the ground.
And just now received a spotter report of snow flurries at 2000
feet in the Santa Cruz Mountains.
Present forecasts appear on track, though will thoroughly review
and adjust where needed for the afternoon package following
receipt of all new model data.
&&
.PREV DISCUSSION...as of 03:31 AM PST Wednesday...Scattered
showers have been displayed on radar through the night moving
steadily from north to south over the ocean. Similar to the Great
Lakes "lake-effect", our "ocean effect" (warmer ocean temperatures
relative to the cold air mass aloft) looks to be churning as
well, as constant radar returns over the Santa Lucia Range has
been steadily producing showers overnight as well. Surface
temperatures however are still in the low 40s at the time this
discussion was posted. Many areas will drop into the 30s with the
North Bay Valleys the best chance dipping below 35 degrees, which
is why that area is in a frost advisory. Additionally the Wind
Advisory and High Wind Warning are still valid through Wednesday
afternoon. Winds at the surface are still gusting 15 to 25 mph
with higher elevations still gusting 35 to 45 mph. But this is
just a synopsis of what is currently going on. This system is only
just arriving and will continue to impact the area through
Saturday.
Key Messages:
* WINDS: As mentioned, winds are currently strong, but are
forecast to gradually diminish Wednesday afternoon. Once winds
subside and products are expired, attention will turn to the
second burst of winds that is forecast Thursday night into
Friday morning and whether new products need to be issued for
that. These winds have also created very hazardous seas which
results in a dangerous surf zone.
* COLD: Cold temperatures start to drop Wednesday morning with the
North Bay Valleys in a Frost Advisory. Temperatures drop more on
Thursday morning as the Freeze Watches have been converted to
Freeze Warnings, with additional Frost Advisories for coastal
areas.
* RAIN: Rain showers will continue through Saturday, but become
more widespread Thursday night into Friday. Rain is expected to
be light to moderate. However, heavier rain is possible as
thunderstorms with the potential for lightning and small hail is
forecast through the week.
* SNOW: Snow showers are forecast for areas 1,500 feet, with the
highest confidence over the Santa Lucia Range. Winter Weather
Advisories have been issued through Thursday morning for the first
round of snow. However, Winter Storm Watches have been issued for
the second round of winter impacts expected Thursday night into
Friday which is forecast to have higher snow totals.
While the winds arrived ahead of the system on Tuesday, the
closed low at 500 mb arrives over Northern California on
Wednesday. Latest Euro ensemble has geopotential heights down to
519 dam, which remains more than three standard deviations away.
In fact, in 2001 there was a closed low aloft that brought higher
snow totals, but that only got down to around 533 dam, which just
speaks to the anomaly of this system. But returning to the winds,
high-res models are suggesting that the magnitude may diminish a
little bit earlier than currently forecast. So advisories and
warnings are still in place through Wednesday afternoon, but winds
will be monitored in case they can be ended earlier.
Convective showers have already arrived over the ocean and will
remain through Saturday. Meso-models are still projecting the
Thursday evening time frame for these showers to move inland and
become more widespread. While most of the showers will have light
to moderate rainfall, the Storm Prediction Center keeps the
coastline in the general thunder risk through Saturday morning.
Thunderstorms have the potential for locally higher rain rate.
While widespread flooding concerns do not accompany this system,
localized ponding on roadways is possible during the heavier outs
of rain. Lightning has already been detected and that risk will
prevail as well. Lastly, with the cold temperatures aloft, small
hail is also a hazard that these showers will be able to produce.
A Frost Advisory is currently valid for the North Bay Valleys due
to the risk of temperatures dropping down below 35 degrees
Fahrenheit. But that is just the beginning. The Freeze Watch for
Thursday morning has been converted to a Freeze Warning for all
interior zones, while Frost Advisories have been issued for
coastal zones. Morning low temperatures are currently forecast to
be at their coldest Thursday and Saturday mornings where freezing
conditions are expected with low temperatures into the upper 20s.
Most records around the area from past events are down in the mid
to low 20s. Widespread records are not expected in this event, it
is not out of the question for certain locations. For records
around the area, consult the CLIMATE section listed below.
Ocean temperatures over the Monterey Bay are around 52 degrees
Fahrenheit and the 12Z Oakland balloon is measuring -3 degrees
Celsius at 850 mb. With significant fetch from the ocean and
strong northwest winds present, there's no wonder as to the radar
returns over the Santa Lucia Mountains as a result from the "ocean
effect". While rain showers are possible, it is likely with that
snow is falling at the higher elevations. Hopefully fire cameras
in the morning when the light is out will be able to capture
pictures of them blanketed in white. Snow showers will continue
through Saturday morning; however, the current showers are only
the first event resulting in multiple Winter Weather Advisories
being issued. However, Winter Storm Watches have now been issued
for the threat of additional snow showers expected Thursday night
into Friday. By all indications, this timeframe looks to have the
potential for higher snow amounts falling. Additional products
will likely need to be issued. If that was not enough of an
impact, winds will increase along with this second round of snow
fall which can potentially reduce visibilities.
Ensemble models are still suggesting that showers taper off on
Saturday, but exact confidence on timing is still hard to have
confidence in. Nevertheless, the cold airmass will remain.
Temperatures are still not expected to recover until Monday
morning when low temperatures have the best chance to return to
the 40s.
The long range guidance still has another upper level trough
descending down the Pacific coastline early next week, with
cluster analysis in agreement which adds to the confidence for
continued unsettled weather of the end of the month and into early
March. However, ensemble models are still all over the place in
the exact placement, timing, and accumulations for the event. For
now, rain remains in the forecast for the Monday/Tuesday timeframe
next week with a low to moderate confidence in the event.
&&
.AVIATION...as of 10:50 AM PST Wednesday...For the 18Z TAFs. VFR
through the TAF period. Winds gain strength through the afternoon
becoming breezy to gusty across the region. Spotty showers will
move along the coast through the day with some moving slightly
inland and affecting some of the terminals. Expect some reduction
in winds into the late night as showers begin to move more inland
increasing rain chances.
Vicinity of KSFO...VFR through the TAF period. Strong and gusty
westerly winds will continue through the late night, peaking around
20 kts with gusts around 30 kts. Rain chances will be spotty through
the day but increase into early Thursday as winds become breezy
again.
KSFO Bridge Approach...Similar to SFO.
Monterey Bay...VFR through the TAF period. The afternoon offers
gusty westerly winds that remain strong well into the evening. Winds
will reduce but stay moderate into the night, but become light and
variable in the late night into early Thursday. Showers will stay
spotty through much of the day, but chances increase into early
Thursday morning as southwest winds increase.
&&
.CLIMATE...
Minimum Temperature Records
02/22 02/23 02/24 02/25
San Francisco D'town...38, 1890...38, 1890...40, 1891...38, 1887
SFO Airport............34, 1951...35, 1955...35, 1955...35, 1953
Oakland D'town.........38, 2019...36, 1974...34, 1987...36, 1987
Santa Rosa.............24, 1920...28, 2022...26, 2022...24, 1915
Kentfield..............27, 1920...26, 1955...29, 1955...29, 1920
Napa...................29, 1955...28, 1949...25, 2022...28, 2022
Livermore..............29, 1976...21, 1942...26, 2022...26, 2022
Redwood City...........30, 1939...32, 1975...30, 2022...31, 2022
Half Moon Bay..........30, 2006...30, 2022...28, 2018...29, 2022
San Jose...............27, 1897...24, 1897...26, 1897...28, 1894
Salinas Airport........30, 1975...30, 2018...30, 2018...25, 1935
King City..............24, 1953...24, 1984...24, 2022...23, 1974
&&
.MARINE...as of 08:44 AM PST Wednesday...Expect northwesterly
gale force winds and steep, hazardous seas into the afternoon.
Hazardous marine conditions from wind wave driven seas persist
through the week. Scatter showers and the slight chance for
thunderstorms is expected for the remainder of the work week. A
brief break is expected over the weekend before the next rainy
system arrives early next week.
&&
.BEACHES...High Surf Advisory in effect for all coastal areas
(except the northern Monterey Bay region in Santa Cruz County)
through 4 pm Wednesday. A large northwest swell will put northwest
facing beaches at the highest risk. Expect large breaking waves
of 20 to 25 feet causing dangerous conditions along the beach and
in the swimming/surfing areas close to the beach.
A Beach Hazards Statement is in effect for the northern Monterey
Bay region in Santa Cruz County through 4 pm Wednesday. Expect
large breaking waves of 8 to 12 feet causing dangerous conditions
along the beach and in the swimming/surfing areas close to the
beach.
&&
.MTR WATCHES/WARNINGS/ADVISORIES...
.Tday...High Surf Advisory...CAZ006-505-509-530
Wind Advisory...CAZ502>504-506-508-510-512>516-528-529
Winter Weather Advisory...CAZ503-512-514-517-518
GLW...Mry Bay until 3 PM
GLW...Pt Arena to Pt Reyes 0-10 nm until 3 PM
GLW...Pt Reyes to Pigeon Pt 0-10 nm until 3 PM
GLW...Pigeon Pt to Pt Pinos 0-10 nm until 3 PM
GLW...Pt Pinos to Pt Piedras Blancas 0-10 nm
GLW...Pt Arena to Pigeon Pt 10-60 nm
GLW...Pigeon Pt to Pt Piedras Blancas 10-60 nm
&&
PUBLIC FORECAST: Blier/DK
AVIATION: Murdock
MARINE: Murdock
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www.youtube.com/nwsbayareaThe office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 22, 2:45 AM PST | Winter Storm Watch | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 4 more | 13 hr |
| Feb 22, 2:46 AM PST | Freeze Warning | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 4 more | 30 hr |
| Feb 22, 8:43 AM PST | Small Craft Advisory | MTR | 3 days | |
| Feb 22, 1:29 PM PST | Special Weather Statement | MTR | San Benito | 46 min |
| Feb 22, 1:51 PM PST | Special Weather Statement | MTR | Napa | 39 min |
| Feb 22, 2:33 PM PST | Special Weather Statement | MTR | San Benito | 27 min |
| Feb 22, 2:55 PM PST | Special Weather Statement | MTR | San Benito | 35 min |
| Feb 22, 3:19 PM PST | Special Weather Statement | MTR | Sonoma | 26 min |
| Feb 22, 3:39 PM PST | Winter Storm Warning | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 4 more | 45 hr |
Nearby
Wind Advisories in California, 2023Every wind advisory in 2023
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.