Alert archive / California / High Surf Advisories in 2021
High Surf Advisory 4, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this high surf advisory at Jan 11, 2021, 2:35 PM PST for 6 counties in California. It took effect at Jan 12, 2021, 10:00 AM PST. It was in force for 35 hr.
The area
The counties it named.
The facts
- Issued
- Jan 11, 2021, 2:35 PM PST (22:35 UTC)
- In effect from
- Jan 12, 2021, 10:00 AM PST
- Expired
- Jan 13, 2021, 9:00 PM PST
- In force
- 35 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 22:36 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, 10.6 hours before the alert went out and 26 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
- 1113 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- -44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
740 WHUS46 KMTR 112235 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 235 PM PST Mon Jan 11 2021 ...KING TIDES WILL CAUSE MINOR COASTAL OVERFLOW AND FLOODING TUESDAY MORNING... ...LARGE, LONG PERIOD NORTHWEST SWELL WILL RESULT IN HAZARDOUS CONDITIONS ALONG THE COAST TUESDAY THROUGH WEDNESDAY... .Another large, long period northwest swell will impact the coast from Tuesday morning through Wednesday afternoon with breaking waves of 20 to 25 feet, locally up to 30 feet at favored breakpoints. Initial forerunners of 4 to 6 feet at 20 to 22 seconds will arrive Tuesday morning result in an increased risk for dangerous sneaker waves and rip currents. The swell and associated waves will build through the day Tuesday before peaking Tuesday night. Additionally, high astronomical tides commonly referred to as King Tides will again impact the coast resulting in minor coastal flooding around the time of high tides on Tuesday morning. CAZ006-505-509-529-530-120700- /O.NEW.KMTR.CF.Y.0002.210112T1300Z-210112T2100Z/ /O.NEW.KMTR.SU.Y.0004.210112T1800Z-210113T2300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 235 PM PST Mon Jan 11 2021 ...COASTAL FLOOD ADVISORY IN EFFECT FROM 5 AM TO 1 PM PST TUESDAY... ...HIGH SURF ADVISORY IN EFFECT FROM 10 AM TUESDAY TO 3 PM PST WEDNESDAY... * WHAT...For the Coastal Flood Advisory, minor coastal flooding expected. For the High Surf Advisory, large breaking waves of 20 to 25 feet, locally up to 30 feet at favored breakpoints. Initial forerunners of 4 to 6 feet at 20 to 22 seconds will arrive Tuesday morning result in an increased risk for dangerous sneaker waves. Additionally, these waves will result in an increased risk of strong rip currents and coastal erosion. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast. * WHEN...For the Coastal Flood Advisory, from 5 AM to 1 PM PST Tuesday. For the High Surf Advisory, from 10 AM Tuesday to 3 PM PST Wednesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Large breaking waves can sweep people off jetties and rocks, and into the frigid and turbulent ocean water. Life-threatening swimming conditions and localized beach erosion can be expected. Cold water rescues or drownings are more likely with these waves and stronger rip currents. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. && $$ CAZ506-120700- /O.NEW.KMTR.CF.Y.0002.210112T1300Z-210112T2100Z/ North Bay Interior Valleys- 235 PM PST Mon Jan 11 2021 ...COASTAL FLOOD ADVISORY IN EFFECT FROM 5 AM TO 1 PM PST TUESDAY... * WHAT...Minor coastal flooding expected. * WHERE...Shorelines of the North San Francisco Bay and San Pablo Bay. * WHEN...From 5 AM to 1 PM PST Tuesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
8 follow-up statements
537 WHUS46 KMTR 120528 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 928 PM PST Mon Jan 11 2021 ...KING TIDES WILL CAUSE MINOR COASTAL OVERFLOW AND FLOODING TUESDAY MORNING... ...LARGE, LONG PERIOD NORTHWEST SWELL WILL RESULT IN HAZARDOUS CONDITIONS ALONG THE COAST TUESDAY THROUGH WEDNESDAY... .Another large, long period northwest swell will impact the coast from Tuesday morning through Wednesday afternoon with breaking waves of 20 to 25 feet, locally up to 30 feet at favored breakpoints. Initial forerunners of 4 to 6 feet at 20 to 22 seconds will arrive Tuesday morning result in an increased risk for dangerous sneaker waves and rip currents. The swell and associated waves will build through the day Tuesday before peaking Tuesday night. Additionally, high astronomical tides commonly referred to as King Tides will again impact the coast resulting in minor coastal flooding around the time of high tides on Tuesday morning. CAZ006-505-509-529-530-121400- /O.CON.KMTR.CF.Y.0002.210112T1300Z-210112T2100Z/ /O.CON.KMTR.SU.Y.0004.210112T1800Z-210113T2300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 928 PM PST Mon Jan 11 2021 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 5 AM TO 1 PM PST TUESDAY... ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 10 AM TUESDAY TO 3 PM PST WEDNESDAY... * WHAT...For the Coastal Flood Advisory, minor coastal flooding expected. For the High Surf Advisory, large breaking waves of 20 to 25 feet, locally up to 30 feet at favored breakpoints. Initial forerunners of 4 to 6 feet at 20 to 22 seconds will arrive Tuesday morning result in an increased risk for dangerous sneaker waves. Additionally, these waves will result in an increased risk of strong rip currents and coastal erosion. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast. * WHEN...For the Coastal Flood Advisory, from 5 AM to 1 PM PST Tuesday. For the High Surf Advisory, from 10 AM Tuesday to 3 PM PST Wednesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Large breaking waves can sweep people off jetties and rocks, and into the frigid and turbulent ocean water. Life-threatening swimming conditions and localized beach erosion can be expected. Cold water rescues or drownings are more likely with these waves and stronger rip currents. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. && $$ CAZ506-121400- /O.CON.KMTR.CF.Y.0002.210112T1300Z-210112T2100Z/ North Bay Interior Valleys- 928 PM PST Mon Jan 11 2021 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 5 AM TO 1 PM PST TUESDAY... * WHAT...Minor coastal flooding expected. * WHERE...Shorelines of the North San Francisco Bay and San Pablo Bay. * WHEN...From 5 AM to 1 PM PST Tuesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
170 WHUS46 KMTR 121038 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 238 AM PST Tue Jan 12 2021 ...KING TIDES WILL CAUSE MINOR COASTAL OVERFLOW AND FLOODING TUESDAY MORNING... ...LARGE, LONG PERIOD NORTHWEST SWELL WILL RESULT IN HAZARDOUS CONDITIONS ALONG THE COAST TUESDAY THROUGH WEDNESDAY... .Another large, long period northwest swell will impact the coast from Tuesday morning through Wednesday afternoon with breaking waves of 20 to 25 feet, locally up to 30 feet at favored breakpoints. Initial forerunners of 4 to 6 feet at 20 to 22 seconds will arrive Tuesday morning result in an increased risk for dangerous sneaker waves and rip currents. The swell and associated waves will build through the day Tuesday before peaking Tuesday night. Additionally, high astronomical tides commonly referred to as King Tides will again impact the coast resulting in minor coastal flooding around the time of high tides on Tuesday morning. CAZ006-505-509-529-530-122100- /O.CON.KMTR.CF.Y.0002.210112T1300Z-210112T2100Z/ /O.CON.KMTR.SU.Y.0004.210112T1800Z-210113T2300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 238 AM PST Tue Jan 12 2021 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST THIS AFTERNOON... ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 3 PM PST WEDNESDAY... * WHAT...For the Coastal Flood Advisory, minor coastal flooding expected. For the High Surf Advisory, large breaking waves of 20 to 25 feet, locally up to 30 feet at favored breakpoints. Initial forerunners of 4 to 6 feet at 20 to 22 seconds will arrive Tuesday morning result in an increased risk for dangerous sneaker waves. Additionally, these waves will result in an increased risk of strong rip currents and coastal erosion. * WHERE...San Francisco Peninsula Coast, San Francisco, Coastal North Bay Including Point Reyes National Seashore, Southern Monterey Bay and Big Sur Coast and Northern Monterey Bay. * WHEN...For the Coastal Flood Advisory, until 1 PM PST this afternoon. For the High Surf Advisory, from 10 AM this morning to 3 PM PST Wednesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Dangerous swimming and surfing conditions and localized beach erosion. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. && $$ CAZ506-122100- /O.CON.KMTR.CF.Y.0002.210112T1300Z-210112T2100Z/ North Bay Interior Valleys- 238 AM PST Tue Jan 12 2021 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST THIS AFTERNOON... * WHAT...Minor coastal flooding expected. * WHERE...Shorelines of the North San Francisco Bay and San Pablo Bay. * WHEN...Until 1 PM PST this afternoon. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
113 WHUS46 KMTR 121857 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 1057 AM PST Tue Jan 12 2021 ...KING TIDES WILL CAUSE MINOR COASTAL OVERFLOW AND FLOODING TUESDAY MORNING... ...LARGE, LONG PERIOD NORTHWEST SWELL WILL RESULT IN HAZARDOUS CONDITIONS ALONG THE COAST TUESDAY THROUGH WEDNESDAY... .Another large, long period northwest swell will impact the coast from Tuesday morning through Wednesday afternoon with breaking waves of 20 to 25 feet, locally up to 30 feet at favored breakpoints. Initial forerunners of 4 to 6 feet at 20 to 22 seconds will arrive Tuesday morning result in an increased risk for dangerous sneaker waves and rip currents. The swell and associated waves will build through the day Tuesday before peaking Tuesday night. Additionally, high astronomical tides commonly referred to as King Tides will again impact the coast resulting in minor coastal flooding around the time of high tides on Tuesday morning. CAZ006-505-509-529-530-130300- /O.CON.KMTR.CF.Y.0002.000000T0000Z-210112T2100Z/ /O.CON.KMTR.SU.Y.0004.000000T0000Z-210113T2300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 1057 AM PST Tue Jan 12 2021 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST THIS AFTERNOON... ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST WEDNESDAY... * WHAT...For the Coastal Flood Advisory, minor coastal flooding expected. For the High Surf Advisory, large breaking waves of 20 to 25 feet, locally up to 30 feet at favored breakpoints. Initial forerunners of 4 to 6 feet at 20 to 22 seconds will arrive Tuesday morning result in an increased risk for dangerous sneaker waves. Additionally, these waves will result in an increased risk of strong rip currents and coastal erosion. * WHERE...San Francisco Peninsula Coast, San Francisco, Coastal North Bay Including Point Reyes National Seashore, Southern Monterey Bay and Big Sur Coast and Northern Monterey Bay. * WHEN...For the Coastal Flood Advisory, until 1 PM PST this afternoon. For the High Surf Advisory, from 10 AM this morning to 3 PM PST Wednesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Dangerous swimming and surfing conditions and localized beach erosion. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. && $$ CAZ506-122100- /O.CON.KMTR.CF.Y.0002.000000T0000Z-210112T2100Z/ North Bay Interior Valleys- 1057 AM PST Tue Jan 12 2021 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST THIS AFTERNOON... * WHAT...Minor coastal flooding expected. * WHERE...Shorelines of the North San Francisco Bay and San Pablo Bay. * WHEN...Until 1 PM PST this afternoon. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
426 WHUS46 KMTR 122200 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 200 PM PST Tue Jan 12 2021 ...LARGE, LONG PERIOD NORTHWEST SWELL WILL RESULT IN HAZARDOUS CONDITIONS ALONG THE COAST TUESDAY THROUGH WEDNESDAY... .Another large, long period northwest swell will impact the coast from Tuesday morning through Wednesday afternoon with breaking waves of 20 to 25 feet, locally up to 30 feet at favored breakpoints. Initial forerunners of 4 to 6 feet at 20 to 22 seconds will arrive Tuesday morning result in an increased risk for dangerous sneaker waves and rip currents. The swell and associated waves will build through the day Tuesday before peaking Tuesday night. CAZ006-505-509-529-530-130600- /O.CON.KMTR.SU.Y.0004.000000T0000Z-210113T2300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 200 PM PST Tue Jan 12 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST WEDNESDAY... * WHAT...For the Coastal Flood Advisory, minor coastal flooding expected. For the High Surf Advisory, large breaking waves of 20 to 25 feet, locally up to 30 feet at favored breakpoints. Initial forerunners of 4 to 6 feet at 20 to 22 seconds will arrive Tuesday morning result in an increased risk for dangerous sneaker waves. Additionally, these waves will result in an increased risk of strong rip currents and coastal erosion. * WHERE...San Francisco Peninsula Coast, San Francisco, Coastal North Bay Including Point Reyes National Seashore, Southern Monterey Bay and Big Sur Coast and Northern Monterey Bay. * WHEN...For the Coastal Flood Advisory, until 1 PM PST this afternoon. For the High Surf Advisory, from 10 AM this morning to 3 PM PST Wednesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Dangerous swimming and surfing conditions and localized beach erosion. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. && $$
244 WHUS46 KMTR 130516 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 916 PM PST Tue Jan 12 2021 ...LARGE, LONG PERIOD NORTHWEST SWELL WILL RESULT IN HAZARDOUS CONDITIONS ALONG THE COAST TONIGHT TO 3 PM PST WEDNESDAY... .A large, long period northwest swell will impact the coast through Wednesday afternoon with breaking waves of 20 to 25 feet, locally up to 30 feet at favored breakpoints. Expect dangerous sneaker waves, strong rip currents, coastal erosion. The swell and associated waves will build and peak tonight. CAZ006-505-509-529-530-131400- /O.CON.KMTR.SU.Y.0004.000000T0000Z-210113T2300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 916 PM PST Tue Jan 12 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST WEDNESDAY... * WHAT...For the High Surf Advisory, large breaking waves of 20 to 25 feet, locally up to 30 feet at favored breakpoints. Expect dangerous sneaker waves, strong rip currents, coastal erosion. * WHERE...San Francisco Peninsula Coast, San Francisco, Coastal North Bay Including Point Reyes National Seashore, Southern Monterey Bay and Big Sur Coast and Northern Monterey Bay. * WHEN...To 3 PM PST Wednesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Dangerous swimming and surfing conditions and localized beach erosion. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. && $$
643 WHUS46 KMTR 131044 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 244 AM PST Wed Jan 13 2021 ...LARGE, LONG PERIOD NORTHWEST SWELL WILL RESULT IN HAZARDOUS CONDITIONS ALONG THE COAST THIS MORNING TO 3 PM PST WEDNESDAY... .The large northwest swell continues to impact the coast through Wednesday afternoon with breaking waves of 20 to 25 feet, locally up to 30 feet at favored breakpoints. Expect dangerous strong rip currents, coastal erosion. CAZ006-505-509-529-530-132300- /O.CON.KMTR.SU.Y.0004.000000T0000Z-210113T2300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 244 AM PST Wed Jan 13 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST THIS AFTERNOON... * WHAT...Large breaking waves of 20 to 25 feet, locally up to 30 feet at favored breakpoints. Expect strong rip currents and coastal erosion. * WHERE...Coastal North Bay Including Point Reyes National Seashore, Southern Monterey Bay and Big Sur Coast, San Francisco Peninsula Coast, San Francisco and Northern Monterey Bay. * WHEN...Until 3 PM PST this afternoon. * IMPACTS...Large wave breaks making for dangerous swimming and surfing conditions and localized beach erosion. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced swimmers should remain out of the water due to dangerous surf conditions. && $$
212 WHUS46 KMTR 132203 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 203 PM PST Wed Jan 13 2021 ...LARGE, LONG PERIOD NORTHWEST SWELL WILL CONTINUE TO PRODUCE HAZARDOUS CONDITIONS ALONG THE COAST THROUGH 9 PM PST THIS EVENING... .The large northwest swell continues to impact the coast through this evening with breaking waves of 18 to 24 feet, locally up to 28 feet at favored breakpoints. Expect dangerous strong rip currents and coastal erosion. CAZ006-505-509-529-530-140500- /O.EXT.KMTR.SU.Y.0004.000000T0000Z-210114T0500Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 203 PM PST Wed Jan 13 2021 ...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 9 PM PST THIS EVENING... * WHAT...Large breaking waves of 18 to 24 feet, locally up to 28 feet at favored breakpoints. Expect strong rip currents and coastal erosion. * WHERE...Coastal North Bay Including Point Reyes National Seashore, Southern Monterey Bay and Big Sur Coast, San Francisco Peninsula Coast, San Francisco and Northern Monterey Bay. * WHEN...Until 9 PM PST this evening. * IMPACTS...Large wave breaks making for dangerous swimming and surfing conditions and localized beach erosion. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced swimmers should remain out of the water due to dangerous surf conditions. && $$
180 WHUS46 KMTR 140450 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 850 PM PST Wed Jan 13 2021 CAZ006-505-509-529-530-140600- /O.EXP.KMTR.SU.Y.0004.000000T0000Z-210114T0500Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 850 PM PST Wed Jan 13 2021 ...HIGH SURF ADVISORY WILL EXPIRE AT 9 PM PST THIS EVENING... Coastal buoys show swell heights steadily lowering since late afternoon and early evening. The high surf advisory will be allowed to expire at 9 pm PST this evening. $$
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 11, 2:35 PM PST | Coastal Flood Advisory | MTR | Marin, Monterey, Napa, City and County of San Francisco, San Mateo, Santa Cruz and 1 more | 22 hr |
| Jan 11, 2:56 PM PST | Small Craft Advisory | MTR | 66 hr |
Nearby
High Surf Advisories in California, 2021Every high surf 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.