Alert archive / California / Beach Hazards Statements in 2013
Beach Hazards Statement 7, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Mar 4, 2013, 3:57 AM PST for 6 counties in California. It took effect at Mar 4, 2013, 9:00 PM PST. It was in force for 18 hr.
The area
The counties it named.
The facts
- Issued
- Mar 4, 2013, 3:57 AM PST (11:57 UTC)
- In effect from
- Mar 4, 2013, 9:00 PM PST
- Expired
- Mar 5, 2013, 3:00 PM PST
- In force
- 18 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 11:56 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 00:00Z, 12.0 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
- 1073 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -24 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
435 WHUS46 KMTR 041157 CFWMTR URGENT - IMMEDIATE BROADCAST REQUESTED COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 357 AM PST MON MAR 4 2013 ...A LONG PERIOD WESTERLY SWELL WILL MOVE ACROSS THE COASTAL WATERS TONIGHT AND TUESDAY... A FAST MOVING LONG PERIOD SWELL IS ANTICIPATED TO MOVE INTO OUR COASTAL WATERS TONIGHT. ALTHOUGH THIS SWELL IS NOT EXPECTED TO BE LARGE IT WILL BE POWERFUL...CAPABLE OF WASHING UNSUSPECTING BEACH GOERS AND FISHERMEN INTO THE SEA. CAZ006-505-509-529-530-051200- /O.NEW.KMTR.BH.S.0007.130305T0500Z-130305T2300Z/ SAN FRANCISCO- COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 357 AM PST MON MAR 4 2013 ...BEACH HAZARDS STATEMENT IN EFFECT FROM THIS EVENING THROUGH TUESDAY AFTERNOON... THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS ISSUED A BEACH HAZARDS STATEMENT FOR SNEAKER WAVES... WHICH IS IN EFFECT FROM THIS EVENING THROUGH TUESDAY AFTERNOON. * LOCATION...THE BEACHES ALONG THE NORTH BAY SOUTHWARD TO THE BIG SUR COAST. ESPECIALLY ON STEEP BEACHES. * TIMING...FAST MOVING LONG PERIOD SWELL WILL ARRIVE TONIGHT WITH PERIOD BETWEEN 18 TO 20 SECONDS. PERIODS WILL DIMINISH TO UNDER 18 SECONDS BY TUESDAY AFTERNOON. * IMPACTS...THESE WAVES WILL BE CAPABLE OF WASHING UNSUSPECTING BEACH GOERS INTO THE SEA. FISHERMEN SHOULD AVOID FISHING FROM ROCK OUTCROPPINGS AND JETTIES...OTHERWISE THEY WILL RUN THE RISK OF BEING WASHED FROM THE ROCKS INTO THE SEA BY A WAVE. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. && $$ HTTP://WWW.WEATHER.GOV/SANFRANCISCO
1 follow-up statement
616 WHUS46 KMTR 051110 CFWMTR URGENT - IMMEDIATE BROADCAST REQUESTED COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 310 AM PST TUE MAR 5 2013 ...A LONG PERIOD WESTERLY SWELL WILL MOVE ACROSS THE COASTAL WATERS TODAY... A FAST MOVING LONG PERIOD SWELL IS ANTICIPATED TO MOVE THROUGH OUR COASTAL WATERS TODAY. ALTHOUGH THIS SWELL IS NOT EXPECTED TO BE LARGE IT WILL BE POWERFUL...CAPABLE OF WASHING UNSUSPECTING BEACH GOERS AND FISHERMEN INTO THE SEA. CAZ006-505-509-529-530-052300- /O.CON.KMTR.BH.S.0007.000000T0000Z-130305T2300Z/ SAN FRANCISCO- COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 310 AM PST TUE MAR 5 2013 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 3 PM PST THIS AFTERNOON... * LOCATION...THE BEACHES ALONG THE NORTH BAY SOUTHWARD TO THE BIG SUR COAST. ESPECIALLY ON STEEP BEACHES. * TIMING...FAST MOVING LONG PERIOD SWELL WILL ARRIVE TODAY WITH PERIOD BETWEEN 18 TO 20 SECONDS. PERIODS WILL DIMINISH TO UNDER 18 SECONDS THIS AFTERNOON. * IMPACTS...THESE WAVES WILL BE CAPABLE OF WASHING UNSUSPECTING BEACH GOERS INTO THE SEA. FISHERMEN SHOULD AVOID FISHING FROM ROCK OUTCROPPINGS AND JETTIES...OTHERWISE THEY WILL RUN THE RISK OF BEING WASHED FROM THE ROCKS INTO THE SEA BY A WAVE. PRECAUTIONARY/PREPAREDNESS ACTIONS... PLEASE VISIT THE FOLLOWING WEBSITE TO SHARE YOUR THOUGHTS ON THE NEW BEACH HAZARDS STATEMENT... HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=CHMBHS. && $$ 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 |
|---|---|---|---|---|
| Mar 3, 9:15 PM PST | Small Craft Advisory for Rough Bar | MTR | 6 hr | |
| Mar 4, 3:24 AM PST | Small Craft Advisory | MTR | 53 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.