Alert archive / California / Beach Hazards Statements in 2016
Beach Hazards Statement 22, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Dec 19, 2016, 10:01 AM PST for 6 counties in California. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Dec 19, 2016, 10:01 AM PST (18:01 UTC)
- Expired
- Dec 19, 2016, 6:00 PM PST
- In force
- 8 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 18:02 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, 6.0 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
- 2160 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- -4 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
459 WHUS46 KMTR 191801 CFWMTR COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO CA 1001 AM PST MON DEC 19 2016 ...LONG PERIOD SWELL ARRIVING AT THE COAST... AN ACTIVE NORTH PACIFIC HAS GENERATED SIGNIFICANT WAVE ACTION THAT IS ARRIVING ALONG THE CENTRAL CALIFORNIA COAST THIS MORNING AS LONG PERIOD NORTHWEST SWELL. CAZ006-505-509-530-200200- /O.NEW.KMTR.BH.S.0022.161219T1801Z-161220T0200Z/ SAN FRANCISCO- COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 1001 AM PST MON DEC 19 2016 ...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 6 PM PST THIS EVENING... THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED A BEACH HAZARDS STATEMENT FOR SNEAKER WAVES AND INCREASED RIP CURRENTS...WHICH IS IN EFFECT UNTIL 6 PM PST THIS EVENING. * HAZARDS...LONG PERIOD ENERGETIC SWELL. * TIMING...THROUGH TODAY. * LOCATION...ALL WEST AND NORTHWEST FACING BEACHES. * POTENTIAL IMPACTS...MODERATE RISK OF SNEAKER WAVES AND AN INCREASED THREAT OF RIP CURRENTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 SNEAKER WAVE. PEOPLE WALKING ALONG THE BEACH SHOULD NEVER TURN THEIR BACK TO THE OCEAN. FISHERMAN SHOULD AVOID FISHING FROM ROCKS OR JETTIES. A BEACH HAZARD STATEMENT FOR RIP CURRENTS MEANS THAT CONDITIONS ARE PRESENT TO SUPPORT A HEIGHTENED RISK OF STRONG RIP CURRENTS. RIP CURRENTS ARE TYPICALLY MORE FREQUENT AND STRONGER IN THE VICINITY OF JETTIES...INLETS...AND PIERS. AVOID GOING INTO THE OCEAN DURING THESE TYPES OF CONDITIONS. && $$
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 18, 7:15 PM PST | Frost Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, San Mateo, Santa Clara and 2 more | 13 hr |
Nearby
Beach Hazards Statements in California, 2016Every beach hazards statement in 2016
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.