Alert archive / California / Beach Hazards Statements in 2016
Beach Hazards Statement 20, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Nov 27, 2016, 10:51 PM PST for 6 counties in California. It took effect at Nov 29, 2016, 4:00 AM PST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Nov 27, 2016, 10:51 PM PST (06:51 UTC)
- In effect from
- Nov 29, 2016, 4:00 AM PST
- Expired
- Nov 28, 2016, 12:59 PM PST
- In force
- 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 06:51 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, 6.9 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1353 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
164 WHUS46 KMTR 280651 CFWMTR COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO CA 1051 PM PST SUN NOV 27 2016 CAZ006-505-509-529-530-281500- /O.NEW.KMTR.BH.S.0020.161129T1200Z-161129T2200Z/ SAN FRANCISCO- COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 1051 PM PST SUN NOV 27 2016 ...BEACH HAZARDS STATEMENT IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY AFTERNOON... THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED A BEACH HAZARDS STATEMENT FOR SNEAKER WAVES...WHICH IS IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY AFTERNOON. * HAZARDS...LARGE SWELLS PRODUCING SNEAKER WAVES. * TIMING...TUESDAY THROUGH WEDNESDAY * LOCATION...ALONG THE COAST FROM SONOMA COUNTY TO MONTEREY COUNTY 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. PRECAUTIONARY/PREPAREDNESS && $$
2 follow-up statements
648 WHUS46 KMTR 281255 CFWMTR COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO CA 455 AM PST MON NOV 28 2016 NORTHWEST SWELLS 12 TO 15 FEET WITH A PERIOD OF 16 TO 18 SECONDS WILL AFFECT AREA BEACHES TUESDAY THROUGH LATE TUESDAY NIGHT. THESE SWELLS ARE CAPABLE OF PRODUCING SNEAKER WAVES...RIP CURRENTS...AND LARGE SHORE BREAK. CAZ006-505-509-529-530-290400- /O.EXT.KMTR.BH.S.0020.161129T1200Z-161130T1200Z/ SAN FRANCISCO- COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 455 AM PST MON NOV 28 2016 ...BEACH HAZARDS STATEMENT NOW IN EFFECT TUESDAY THROUGH LATE TUESDAY NIGHT... * TIMING...TUESDAY THROUGH LATE TUESDAY NIGHT. * LOCATION...ALONG THE BEACHES FROM SONOMA COUNTY TO MONTEREY COUNTY. * POTENTIAL IMPACTS...INCREASED RISK OF SNEAKER WAVES WHICH CAN SWEEP BEACHGOERS INTO THE WATER FROM THE BEACH OR ROCKS. INCREASED RISK OF RIP CURRENTS WHICH CAN PULL PEOPLE OUT INTO THE COLD TURBULENT OCEAN. INCREASE RISK OF LARGE SHORE BREAK WHICH CAN HARM BEACHGOERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BEACH HAZARD STATEMENT FOR SNEAKER WAVES MEANS THAT CONDITIONS ARE PRESENT TO SUPPORT A HEIGHTENED RISK OF UNSUSPECTING BEACH GOERS BEING SWEPT INTO THE SEA BY A WAVE. PEOPLE WALKING ALONG THE BEACH SHOULD NEVER TURN THEIR BACK TO THE SEA. FISHERMEN SHOULD AVOID FISHING FROM ROCKS OR JETTIES. && $$
880 WHUS46 KMTR 282059 CFWMTR COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO CA 1259 PM PST MON NOV 28 2016 CAZ006-505-509-529-530-291200- /O.CAN.KMTR.BH.S.0020.161129T1200Z-161130T1200Z/ /O.NEW.KMTR.SU.Y.0020.161129T0500Z-161130T0200Z/ SAN FRANCISCO- COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 1259 PM PST MON NOV 28 2016 ...HIGH SURF ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO 6 PM PST TUESDAY... THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED A HIGH SURF ADVISORY...WHICH IS IN EFFECT FROM 9 PM THIS EVENING TO 6 PM PST TUESDAY. * WAVES AND SURF...NORTHWEST SWELL OF 11 TO 14 FEET CAN BE EXPECTED WITH PERIODS INCREASING TO 17 SECONDS BY TUESDAY. BREAKERS AT LOCAL BEACHES OF UP TO 18 FEET ARE ANTICIPATED. * TIMING...LATE THIS EVENING THROUGH TUESDAY AFTERNOON. * POTENTIAL IMPACTS...INCREASED RISK OF SNEAKER WAVES WHICH CAN SWEEP BEACHGOERS INTO THE WATER FROM THE BEACH OR ROCKS. INCREASED RISK OF RIP CURRENTS WHICH CAN PULL PEOPLE OUT INTO THE COLD TURBULENT OCEAN. INCREASE RISK OF LARGE SHORE BREAK WHICH CAN HARM BEACHGOERS AND CAUSE BEACH EROSION. && PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN THE ADVISORY AREA...PRODUCING RIP CURRENTS AND LOCALIZED BEACH EROSION. && $$
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 27, 9:00 PM PST | Small Craft Advisory | MTR | 24 hr | |
| Nov 28, 8:13 AM PST | Small Craft Advisory for Rough Bar | MTR | 34 hr | |
| Nov 28, 12:59 PM PST | High Surf Advisory | MTR | Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma | 29 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.