Alert archive / California / Beach Hazards Statements in 2023
Beach Hazards Statement 3, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Jan 22, 2023, 7:57 PM PST for 6 counties in California. It took effect at Jan 23, 2023, 4:00 PM PST. It was in force for 30 hr.
The area
The counties it named.
The facts
- Issued
- Jan 22, 2023, 7:57 PM PST (03:57 UTC)
- In effect from
- Jan 23, 2023, 4:00 PM PST
- Expired
- Jan 24, 2023, 10:00 PM PST
- In force
- 30 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 03:55 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Oakland, CA (KOAK), launched 00:00Z, 4.0 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
- 3011 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- -31 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
416 WHUS46 KMTR 230357 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 757 PM PST Sun Jan 22 2023 ...KING TIDES CONTINUE THROUGH MONDAY AFTERNOON, BRINGING MINOR COASTAL FLOODING FOR LOW LYING AREAS. A NEW, LONG PERIOD NORTHWESTERLY SWELL ARRIVES MONDAY EVENING, BRINGING RETURN OF SNEAKER WAVE AND RIP CURRENT RISK... .The highest astronomical tides of the year, commonly referred to as the King Tides, will impact the coast and San Francisco Bay shoreline through Monday, and have historically resulted in the localized flooding of specific low lying areas each year. The lowest low tides of the event will be observed during the late afternoon to early evening hours which may lead to trouble for mariners navigating shallow waterways. After King Tides subside, a new, long period northwesterly swell arrives Monday evening. CAZ006-505-509-530-231300- /O.NEW.KMTR.BH.S.0003.230124T0000Z-230125T0600Z/ /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Southern Monterey Bay and Big Sur Coast- 757 PM PST Sun Jan 22 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... ...BEACH HAZARDS STATEMENT IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY EVENING... * WHAT...For the Coastal Flood Advisory, minor coastal flooding. For the Beach Hazards Statement, increased risk of sneaker waves and strong rip currents along the coast, especially for northwest facing beaches. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast and Southern Monterey Bay and Big Sur Coast. * WHEN...For the Coastal Flood Advisory, until 3 PM PST Monday. For the Beach Hazards Statement, from Monday afternoon through Tuesday evening. * IMPACTS...Flooding of areas previously impacted by King Tide events is expected, including low lying lots, parks, and roads along the coast with the highest high tides. Increased risk of sneaker waves and rip currents with incoming long period northwesterly swell. * ADDITIONAL DETAILS...Tidal levels will rise along the Pacific coast but impacts will be more localized to areas such as Elkhorn Slough near Moss Landing and the mouth of the Salinas river at the Salinas Lagoon. Beachgoers should be familiar with times and heights of local tidal levels. Once King Tides subside, continue to use caution on the beach as sneaker wave risk will return. 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. Remain out of the water to avoid hazardous swimming conditions. && $$ CAZ506-508-529-231300- /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ North Bay Interior Valleys-San Francisco Bay Shoreline- Northern Monterey Bay- 757 PM PST Sun Jan 22 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... * WHAT...Minor coastal flooding. * WHERE...North Bay Interior Valleys, San Francisco Bay Shoreline and Northern Monterey Bay. * WHEN...Until 3 PM PST Monday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...Tide poolers and beachgoers should be familiar with the times and heights of local tidal levels to avoid hazards that may arise from rapidly shifting water levels. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
6 follow-up statements
968 WHUS46 KMTR 231059 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 259 AM PST Mon Jan 23 2023 ...KING TIDES CONTINUE THROUGH THIS AFTERNOON, BRINGING MINOR COASTAL FLOODING FOR LOW LYING AREAS. A NEW, LONG PERIOD NORTHWESTERLY SWELL ARRIVES THIS EVENING, BRINGING RETURN OF SNEAKER WAVE AND RIP CURRENT RISK... .The highest astronomical tides of the year, commonly referred to as the King Tides, will impact the coast and San Francisco Bay shoreline through today, and have historically resulted in the localized flooding of specific low lying areas each year. The lowest low tides of the event will be observed during the late afternoon to early evening hours which may lead to trouble for mariners navigating shallow waterways. After King Tides subside, a new, long period northwesterly swell arrives this evening. CAZ006-505-509-530-232300- /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ /O.CON.KMTR.BH.S.0003.230124T0000Z-230125T0600Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Southern Monterey Bay and Big Sur Coast- 259 AM PST Mon Jan 23 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST THIS AFTERNOON... ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH TUESDAY EVENING... * WHAT...For the Coastal Flood Advisory, minor coastal flooding. For the Beach Hazards Statement, increased risk of sneaker waves and strong rip currents along the coast, especially for northwest facing beaches. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast and Southern Monterey Bay and Big Sur Coast. * WHEN...For the Coastal Flood Advisory, until 3 PM PST this afternoon. For the Beach Hazards Statement, from this afternoon through Tuesday evening. * IMPACTS...Flooding of areas previously impacted by King Tide events is expected, including low lying lots, parks, and roads along the coast with the highest high tides. Increased risk of sneaker waves and rip currents with incoming long period northwesterly swell. * ADDITIONAL DETAILS...Tidal levels will rise along the Pacific coast but impacts will be more localized to areas such as Elkhorn Slough near Moss Landing and the mouth of the Salinas river at the Salinas Lagoon. Beachgoers should be familiar with times and heights of local tidal levels. Once King Tides subside, continue to use caution on the beach as sneaker wave risk will return. 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. Remain out of the water to avoid hazardous swimming conditions. && $$ CAZ506-508-529-232300- /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ North Bay Interior Valleys-San Francisco Bay Shoreline- Northern Monterey Bay- 259 AM PST Mon Jan 23 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST THIS AFTERNOON... * WHAT...Minor coastal flooding expected at prone low lying coastal locations along the coast and the San Francisco Bay shoreline during peak high tide. * WHERE...North Bay Interior Valleys, San Francisco Bay Shoreline and Northern Monterey Bay. * WHEN...Until 3 PM PST this afternoon. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...Tide poolers and beachgoers should be familiar with the times and heights of local tidal levels to avoid hazards that may arise from rapidly shifting water levels. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
527 WHUS46 KMTR 232245 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 245 PM PST Mon Jan 23 2023 ...A LONG PERIOD NORTHWEST SWELL ARRIVES MONDAY EVENING, BRINGING THE RISK OF SNEAKER WAVES AND RIP CURRENT RISK... CAZ006-505-509-530-240600- /O.EXP.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ /O.CON.KMTR.BH.S.0003.230124T0000Z-230125T0600Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Southern Monterey Bay and Big Sur Coast- 245 PM PST Mon Jan 23 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH TUESDAY EVENING... * WHAT...Increased risk of sneaker waves and strong rip currents along the coast, especially for northwest facing beaches. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast and Southern Monterey Bay and Big Sur Coast. * WHEN...Through Tuesday evening. * IMPACTS... Increased risk of sneaker waves and rip currents with incoming long period northwesterly swell. Sneaker waves can move quickly knocking unaware beachgoers off their feet. Remember, never turn your back to the ocean. * ADDITIONAL DETAILS...If visiting the coast, keep children close and pets on leads. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$ CAZ506-508-529-232345- /O.EXP.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ North Bay Interior Valleys-San Francisco Bay Shoreline- Northern Monterey Bay- 245 PM PST Mon Jan 23 2023 ...COASTAL FLOOD ADVISORY WILL EXPIRE AT 3 PM PST THIS AFTERNOON... With high tide past and tidal forecasts diminishing through the remainder of the week, the Coastal Flood Advisory for the King Tides event will be allowed to expire. $$
926 WHUS46 KMTR 240454 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 854 PM PST Mon Jan 23 2023 ...A LONG PERIOD NORTHWEST SWELL ARRIVES MONDAY EVENING, BRINGING THE RISK OF SNEAKER WAVES AND RIP CURRENT RISK... CAZ006-505-509-530-241700- /O.CON.KMTR.BH.S.0003.000000T0000Z-230125T0600Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Southern Monterey Bay and Big Sur Coast- 854 PM PST Mon Jan 23 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH TUESDAY EVENING... * WHAT...Increased risk of sneaker waves and strong rip currents along the coast, especially for northwest facing beaches. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast and Southern Monterey Bay and Big Sur Coast. * WHEN...Through Tuesday evening. * IMPACTS... Increased risk of sneaker waves and rip currents with incoming long period northwesterly swell. Sneaker waves can move quickly knocking unaware beachgoers off their feet. Remember, never turn your back to the ocean. * ADDITIONAL DETAILS...If visiting the coast, keep children close and pets on leads. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
226 WHUS46 KMTR 241238 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 438 AM PST Tue Jan 24 2023 ...A LONG PERIOD NORTHWEST SWELL RESULTING IN AN INCREASED RISK OF SNEAKER WAVES AND STRONG RIP CURRENTS... CAZ006-505-509-530-242300- /O.CON.KMTR.BH.S.0003.000000T0000Z-230125T0600Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Southern Monterey Bay and Big Sur Coast- 438 AM PST Tue Jan 24 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THIS EVENING... * WHAT...Increased risk of sneaker waves and strong rip currents along the coast, especially for northwest facing beaches. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast and Southern Monterey Bay and Big Sur Coast. * WHEN...Through this evening. * IMPACTS...Increased risk of sneaker waves and strong rip currents with incoming long period northwesterly swell. Sneaker waves can move quickly knocking unaware beachgoers off their feet. Remember, never turn your back to the ocean. * ADDITIONAL DETAILS...If visiting the coast, please keep children close and pets on leads. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
526 WHUS46 KMTR 242216 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 216 PM PST Tue Jan 24 2023 ...A LONG PERIOD NORTHWEST SWELL RESULTING IN AN INCREASED RISK OF SNEAKER WAVES AND STRONG RIP CURRENTS... CAZ006-505-509-530-250600- /O.CON.KMTR.BH.S.0003.000000T0000Z-230125T0600Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Southern Monterey Bay and Big Sur Coast- 216 PM PST Tue Jan 24 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * WHAT...Increased risk of sneaker waves and strong rip currents along the coast, especially for northwest facing beaches. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast and Southern Monterey Bay and Big Sur Coast. * WHEN...Through 10 PM this evening. * IMPACTS...Increased risk of sneaker waves and strong rip currents with incoming long period northwesterly swell. Sneaker waves can move quickly knocking unaware beachgoers off their feet. Remember, never turn your back to the ocean. * ADDITIONAL DETAILS...If visiting the coast, please keep children close and pets on leads. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
077 WHUS46 KMTR 250531 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 931 PM PST Tue Jan 24 2023 CAZ006-505-509-530-250645- /O.EXP.KMTR.BH.S.0003.000000T0000Z-230125T0600Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Southern Monterey Bay and Big Sur Coast- 931 PM PST Tue Jan 24 2023 ...BEACH HAZARDS STATEMENT WILL EXPIRE AT 10 PM PST THIS EVENING... $$
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 22, 8:43 PM PST | Small Craft Advisory | MTR | 54 hr | |
| Jan 23, 2:37 PM PST | Small Craft Advisory | MTR | 48 hr |
Nearby
Beach Hazards Statements in California, 2023Every beach hazards statement 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.