Alert archive / California / Beach Hazards Statements in 2016
Beach Hazards Statement 7, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Apr 16, 2016, 10:16 PM PDT for 6 counties in California. It took effect at Apr 17, 2016, 12:00 AM PDT. It was in force for 21 hr.
The area
The counties it named.
The facts
- Issued
- Apr 16, 2016, 10:16 PM PDT (05:16 UTC)
- In effect from
- Apr 17, 2016, 12:00 AM PDT
- Expired
- Apr 17, 2016, 9:00 PM PDT
- In force
- 21 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 05:22 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, 5.3 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
- 2752 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -30 m²/s²
- 0-3 km storm-relative helicity
- -25 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
261 WHUS46 KMTR 170516 CFWMTR COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO CA 1016 PM PDT SAT APR 16 2016 A LONG PERIOD SWELL WILL ARRIVE ALONG THE NORTHERN AND CENTRAL CALIFORNIA COAST TONIGHT AND CONTINUE THROUGH SUNDAY. SWELL PERIODS OF 18 TO 19 SECONDS ARE EXPECTED LATE TONIGHT AND SUNDAY. WHILE SWELL HEIGHTS ARE ONLY EXPECTED TO BE IN THE 5 TO 7 FOOT RANGE THE LONG PERIOD INCREASES THE RISK FOR SNEAKER WAVES. CAZ006-505-509-529-530-180400- /O.NEW.KMTR.BH.S.0007.160417T0700Z-160418T0400Z/ SAN FRANCISCO- COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 1016 PM PDT SAT APR 16 2016 ...BEACH HAZARDS STATEMENT IN EFFECT THROUGH SUNDAY EVENING... THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED A BEACH HAZARDS STATEMENT FOR SNEAKER WAVES WHICH IS IN EFFECT THROUGH SUNDAY EVENING. * SEAS...5 TO 7 FEET WITH A 18 TO 19 SECOND PERIOD. * TIMING...MIDNIGHT THROUGH 9 PM SUNDAY * LOCATION...ALL BEACHES FROM SONOMA COUNTY TO MONTEREY COUNTY * POTENTIAL IMPACTS...LARGE SNEAKER WAVES WHICH COULD WASH UNSUSPECTING BEACH GOERS INTO THE WATER FROM THE BEACH AND ROCKS. 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. FISHERMEN SHOULD AVOID FISHING FROM ROCKS OR JETTIES. && $$
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.