Alert archive / California / Beach Hazards Statements in 2013
Beach Hazards Statement 8, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Apr 6, 2013, 8:54 AM PDT for 6 counties in California. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Apr 6, 2013, 8:54 AM PDT (15:54 UTC)
- Expired
- Apr 6, 2013, 8:00 PM PDT
- In force
- 11 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 15:56 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, 3.9 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
- 4 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 587 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
973 WHUS46 KMTR 061554 CFWMTR URGENT - IMMEDIATE BROADCAST REQUESTED COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 854 AM PDT SAT APR 6 2013 ...A POWERFUL WESTERLY SWELL WILL MOVE THROUGH THE COASTAL WATERS TODAY RESULTING IN LARGE SURF...SNEAKER WAVES AND POWERFUL RIP CURRENTS... CAZ006-505-509-529-530-070300- /O.NEW.KMTR.BH.S.0008.130406T1554Z-130407T0300Z/ SAN FRANCISCO- COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 854 AM PDT SAT APR 6 2013 ...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 8 PM PDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS ISSUED A BEACH HAZARDS STATEMENT FOR LARGE SURF...STRONG RIP CURRENTS AND SNEAKER WAVES... WHICH IS IN EFFECT UNTIL 8 PM PDT THIS EVENING. * LOCATION...WESTERLY FACING CENTRAL COAST BEACHES FROM SONOMA THROUGH THE MONTEREY COUNTY...ESPECIALLY STEEP BEACHES. * TIMING...TODAY THROUGH THIS EVENING. * IMPACTS...OCCASIONAL LARGE BREAKING WAVES WITH THE POTENTIAL TO WASH PEOPLE FROM BEACHES AND OFF OF ROCKS. THE LARGE BREAKING WAVES WILL ALSO CONTRIBUTE TO STRONG RIP CURRENTS. PRECAUTIONARY/PREPAREDNESS ACTIONS...A BEACH HAZARD STATEMENT MEANS THAT POTENTIALLY DANGEROUS CONDITIONS MAY EXIST ON SPECIFIC BEACHES. THESE HAZARDS MAY INCLUDE LARGE SHORE BREAK...STRONG RIP CURRENTS...STRONG LONG SHORE CURRENTS AND POSSIBLY SNEAKER WAVES. ALL OF WHICH COULD BE LIFE THREATENING. BE SURE TO ALWAYS KEEP YOUR EYES ON THE OCEAN. PLEASE VISIT THE FOLLOWING WEBSITE TO SHARE YOUR THOUGHTS ON THE NEW BEACH HAZARDS STATEMENT... HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=CHMBHS. && $$ HTTP://WWW.WEATHER.GOV/SANFRANCISCO
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 2:26 AM PDT | Gale Watch | MTR | 12 hr | |
| Apr 6, 8:45 AM PDT | Small Craft Advisory | MTR | 17 hr | |
| Apr 6, 2:30 PM PDT | Gale Warning | MTR | 60 hr | |
| Apr 6, 2:30 PM PDT | Small Craft Advisory | MTR | 60 hr |
Nearby
Beach Hazards Statements in California, 2013Every beach hazards statement in 2013
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.