Alert archive / California / Beach Hazards Statements in 2015
Beach Hazards Statement 13, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Dec 16, 2015, 8:09 AM PST for 6 counties in California. It took effect at Dec 16, 2015, 9:00 AM PST. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Dec 16, 2015, 8:09 AM PST (16:09 UTC)
- In effect from
- Dec 16, 2015, 9:00 AM PST
- Expired
- Dec 16, 2015, 6:00 PM PST
- In force
- 9 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 16:08 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, 4.2 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
- 2090 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
767 WHUS46 KMTR 161609 CFWMTR COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO CA 809 AM PST WED DEC 16 2015 ...SNEAKER WAVES ALONG ENTIRE COAST ON WEDNESDAY... .A LONG PERIOD NORTHWEST SWELL IS MOVING THROUGH THE COASTAL WATERS TODAY AND WILL BRING INFREQUENT VERY ENERGETIC WAVES ASHORE. THESE POWERFUL INFREQUENT WAVES MAY CATCH BEACHGOERS OFF GUARD AND KNOCK THEM INTO THE OCEAN. BEACHGOERS SHOULD BE VIGILANT OF THEIR SURROUNDINGS AND REMAIN OFF SHORELINE ROCKS AND COASTAL JETTIES. CAZ006-505-509-529-530-170200- /O.NEW.KMTR.BH.S.0013.151216T1700Z-151217T0200Z/ SAN FRANCISCO- COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 809 AM PST WED DEC 16 2015 ...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 ...WHICH IS IN EFFECT UNTIL 6 PM PST THIS EVENING. * TIMING... WEDNESDAY MORNING THROUGH WEDNESDAY EVENING * LOCATION...ENTIRE COASTLINE FROM SONOMA COUNTY THROUGH MONTEREY COUNTY * POTENTIAL IMPACTS... LARGE SNEAKER WAVES WILL BE THE PRIMARY IMPACT. 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 WAVE. PEOPLE WALKING ALONG THE BEACH SHOULD NEVER TURN THEIR BACK TO THE SEA. FISHERMAN SHOULD AVOID FISHING FROM ROCKS OR JETTIES. && $$
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 16, 2:38 PM PST | Freeze Warning | MTR | Monterey, San Benito | 18 hr |
Nearby
Beach Hazards Statements in California, 2015Every beach hazards statement in 2015
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.