Alert archive / California / Beach Hazards Statements in 2025
Beach Hazards Statement 4, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Feb 24, 2025, 12:05 PM PST for 6 counties in California. It took effect at Feb 25, 2025, 4:00 AM PST. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Feb 24, 2025, 12:05 PM PST (20:05 UTC)
- In effect from
- Feb 25, 2025, 4:00 AM PST
- Expired
- Feb 25, 2025, 9:08 AM PST
- In force
- 5 hr
- Issued by
- NWS San Francisco Bay Area, CA
Counties City and County of San Francisco, CA, Marin County, CA, Monterey County, CA, San Mateo County, CA, Santa Cruz County, CA, Sonoma County, CA
The radar
The San Francisco radar (KMUX), 53 km from the middle of the area, began a volume at 20:08 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Oakland, CA (KOAK), launched 12:00Z, 8.1 hours before the alert went out and 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
- 1025 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 134 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
499 WHUS46 KMTR 242005 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 1205 PM PST Mon Feb 24 2025 CAZ006-505-509-530-250600- /O.NEW.KMTR.BH.S.0004.250225T1200Z-250226T1200Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Southern Monterey Bay and Big Sur Coast- 1205 PM PST Mon Feb 24 2025 ...BEACH HAZARDS STATEMENT IN EFFECT FROM LATE TONIGHT THROUGH LATE TUESDAY NIGHT... * WHAT...A long period westerly swell will result in an increased risk of sneaker waves and rip currents. Breaking waves of 15 to 18 feet along west and 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...From late tonight through late Tuesday night. * IMPACTS...Sneaker waves can unexpectedly run significantly farther up the beach than normal, including over rocks and jetties. These waves can suddenly knock people off their feet and quickly pull them into the cold ocean waters, where currents will be stronger than normal. These waves can also carry driftwood logs and other debris. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
3 follow-up statements
539 WHUS46 KMTR 250535 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 935 PM PST Mon Feb 24 2025 CAZ006-505-509-530-251300- /O.CON.KMTR.BH.S.0004.250225T1200Z-250226T1200Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Southern Monterey Bay and Big Sur Coast- 935 PM PST Mon Feb 24 2025 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 4 AM PST TUESDAY THROUGH LATE TUESDAY NIGHT... * WHAT...A long period westerly swell will result in an increased risk of sneaker waves and rip currents. Breaking waves of 15 to 18 feet along west and northwest facing beaches. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast and Southern Monterey Bay and Big Sur Coast. * WHEN...From late tonight through late Tuesday night. * IMPACTS...Sneaker waves can unexpectedly run significantly farther up the beach than normal, including over rocks and jetties. These waves can suddenly knock people off their feet and quickly pull them into the cold ocean waters, where currents will be stronger than normal. These waves can also carry driftwood logs and other debris. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
976 WHUS46 KMTR 251118 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 318 AM PST Tue Feb 25 2025 CAZ006-505-509-530-252230- /O.CON.KMTR.BH.S.0004.250225T1200Z-250226T1200Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Southern Monterey Bay and Big Sur Coast- 318 AM PST Tue Feb 25 2025 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE TONIGHT... * WHAT...A long period westerly swell will result in an increased risk of sneaker waves and rip currents. Breaking waves of 15 to 18 feet along west and 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...From late tonight through late Tuesday night. * IMPACTS...Sneaker waves can unexpectedly run significantly farther up the beach than normal, including over rocks and jetties. These waves can suddenly knock people off their feet and quickly pull them into the cold ocean waters, where currents will be stronger than normal. These waves can also carry driftwood logs and other debris. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
636 WHUS46 KMTR 251708 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 908 AM PST Tue Feb 25 2025 CAZ006-505-509-530-260115- /O.CAN.KMTR.BH.S.0004.000000T0000Z-250226T1200Z/ /O.NEW.KMTR.SU.Y.0002.250225T1708Z-250226T1200Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Southern Monterey Bay and Big Sur Coast- 908 AM PST Tue Feb 25 2025 ...HIGH SURF ADVISORY IN EFFECT UNTIL 4 AM PST WEDNESDAY... ...BEACH HAZARDS STATEMENT IS CANCELLED... * WHAT...Large NW swell will result in breaking waves of 20 to 25 feet along North and West facing beaches. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast and Southern Monterey Bay and Big Sur Coast Counties. * WHEN...Until 4 AM PST Wednesday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Sneaker waves can unexpectedly run significantly farther up the beach than normal, including over rocks and jetties. These waves can suddenly knock people off their feet and quickly pull them into the cold ocean waters, where currents will be stronger than normal. These waves can also carry driftwood logs and other debris. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water due to dangerous surf conditions. Never turn your back on the ocean! && $$ CAZ529-260115- /O.NEW.KMTR.BH.S.0005.250225T1708Z-250226T1200Z/ Northern Monterey Bay- 908 AM PST Tue Feb 25 2025 ...BEACH HAZARDS STATEMENT IN EFFECT THROUGH LATE TONIGHT... * WHAT...A long period westerly swell will result in an increased risk of sneaker waves and rip currents. Breaking waves up to 15 feet along favored break points. * WHERE...Northern Monterey Bay County. * WHEN...Through late tonight. * IMPACTS...Sneaker waves can unexpectedly run significantly farther up the beach than normal, including over rocks and jetties. These waves can suddenly knock people off their feet and quickly pull them into the cold ocean waters, where currents will be stronger than normal. These waves can also carry driftwood logs and other debris. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
Nearby
Beach Hazards Statements in California, 2025Every beach hazards statement in 2025
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.