Alert archive / California / Beach Hazards Statements in 2021
Beach Hazards Statement 3, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Jan 24, 2021, 2:14 PM PST for 6 counties in California. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Jan 24, 2021, 2:14 PM PST (22:14 UTC)
- Expired
- Jan 24, 2021, 7:00 PM 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 22:16 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Reno, NV (KREV), launched 12:00Z, 10.2 hours before the alert went out and 424 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 733 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
830 WHUS46 KMTR 242214 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 214 PM PST Sun Jan 24 2021 ...INCREASED RISK OF SNEAKER WAVES THROUGH END OF THE DAY... .Buoy data indicates a very long period northwest swell is arriving with more energy than forecast and will bring an increased risk of sneaker waves and stronger rip currents through the early evening. CAZ006-505-509-530-250300- /O.NEW.KMTR.BH.S.0003.210124T2214Z-210125T0300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Southern Monterey Bay and Big Sur Coast- 214 PM PST Sun Jan 24 2021 ...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 7 PM PST THIS EVENING... * WHAT...Long period northwest swell of 3 to 6 feet at 18 to 22 seconds through the early evening. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast and Southern Monterey Bay and Big Sur Coast. * WHEN...Until 7 PM PST this evening. * IMPACTS...Increased risk of sneaker waves and stronger rip currents through the early evening. * ADDITIONAL DETAILS...A Beach Hazard Statement for sneaker waves means that conditions are present to support a heightened risk of unsuspecting beach goers being swept into the sea by a wave. People walking along the beach should never turn their back to the sea. Fisherman should avoid fishing from rocks or jetties. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
1 follow-up statement
169 WHUS46 KMTR 250255 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 655 PM PST Sun Jan 24 2021 CAZ006-505-509-530-250400- /O.EXP.KMTR.BH.S.0003.000000T0000Z-210125T0300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast- Southern Monterey Bay and Big Sur Coast- 655 PM PST Sun Jan 24 2021 ...BEACH HAZARDS STATEMENT WILL EXPIRE AT 7 PM PST THIS EVENING... The Beach Hazards Statement will be allowed to expire at 7 pm PST. $$
Nearby
Beach Hazards Statements in California, 2021Every beach hazards statement 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.