Alert archive / California / Beach Hazards Statements in 2017
Beach Hazards Statement 4, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Apr 1, 2017, 1:42 PM PDT for 6 counties in California. It took effect at Apr 1, 2017, 11:00 PM PDT. It was in force for 36 hr.
The area
The counties it named.
The facts
- Issued
- Apr 1, 2017, 1:42 PM PDT (20:42 UTC)
- In effect from
- Apr 1, 2017, 11:00 PM PDT
- Expired
- Apr 3, 2017, 11:00 AM PDT
- In force
- 36 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 20:43 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, 8.7 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
- 2737 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 130 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
546 WHUS46 KMTR 012042 CFWMTR COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 142 PM PDT SAT APR 1 2017 ...LARGE LONG PERIOD SWELLS WILL IMPACT THE COASTLINE FROM NORTHERN SONOMA COUNTY TO SOUTHERN MONTEREY COUNTY LATE SATURDAY NIGHT THROUGH MONDAY MORNING... .BEACH HAZARDS STATEMENT IS IN EFFECT STARTING LATE TONIGHT THROUGH MONDAY MORNING. FORERUNNERS ARE EXPECTED TO REACH THE COASTLINE AROUND OR SLIGHTLY AFTER MIDNIGHT SUNDAY MORNING. SWELL HEIGHTS ARE EXPECTED TO RANGE FROM 8 TO 12 FT AT MOST BEACHES DURING THIS TIME FRAME. A HIGH SURF ADVISORY MAY BE NEEDED IN LATER UPDATES IF TRENDS CONTINUE. THE THREAT OF BEACH HAZARDS IS PRIMARILY ALONG WEST TO NORTHWEST FACING BEACHES. HAZARDS INCLUDE AN INCREASED RISK OF RIP CURRENTS...SNEAKER WAVES...AND LARGE SHORE BREAKS. CAZ006-505-509-529-530-021145- /O.NEW.KMTR.BH.S.0004.170402T0600Z-170403T1800Z/ SAN FRANCISCO- COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 142 PM PDT SAT APR 1 2017 ...BEACH HAZARDS STATEMENT IN EFFECT FROM 11 PM PDT THIS EVENING THROUGH MONDAY MORNING... THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED A BEACH HAZARDS STATEMENT FOR LARGE SHORE BREAKS...INCREASED RISK OF RIP CURRENTS...AND INCREASED CHANCE OF SNEAKER WAVES...WHICH IS IN EFFECT FROM 11 PM PDT THIS EVENING THROUGH MONDAY MORNING. * HAZARDS...LARGE SHORE BREAKS...RIP CURRENTS...AND SNEAKER WAVES. * TIMING...LATE TONIGHT THROUGH MONDAY MORNING * LOCATION...THE COASTLINE FROM NORTHERN SONOMA COUNTY SOUTH THROUGH SOUTHERN MONTEREY COUNTY. IN PARTICULAR WEST TO NORTHWEST FACING BEACHES INCLUDING BUT NOT LIMITED TO OCEAN BEACH...MONTARA STATE BEACH...MARINA STATE BEACH...MONTEREY STATE BEACH...AND ASILOMAR STATE BEACH. * POTENTIAL IMPACTS...LARGE SHORE BREAKS COULD INJURE BEACHGOERS. SNEAKER WAVES COULD KNOCK UNSUSPECTING PEOPLE INTO THE COLD... TURBULENT OCEAN. RIP CURRENTS COULD PULL PEOPLE OUT TO SEA. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BEACH HAZARDS STATEMENT MEANS THE POTENTIALLY DANGEROUS CONDITIONS MAY EXIST ON SPECIFIC BEACHES. THESE HAZARDS MAY INCLUDE LARGE SHORE BREAK...STRONG RIP CURRENTS...STRONG LONGSHORE CURRENTS AND POSSIBLY SNEAKER WAVES. ALL OF WHICH COULD BE LIFE THREATENING. BE SURE TO ALWAYS KEEP YOUR EYES ON THE OCEAN. && $$
3 follow-up statements
953 WHUS46 KMTR 021140 CFWMTR COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 440 AM PDT SUN APR 2 2017 ...LARGE LONG PERIOD SWELLS WILL IMPACT THE COASTLINE FROM NORTHERN SONOMA COUNTY TO SOUTHERN MONTEREY COUNTY LATE SATURDAY NIGHT THROUGH MONDAY MORNING... .BEACH HAZARDS STATEMENT IS IN EFFECT THROUGH MONDAY MORNING. FORERUNNERS WILL IMPACT THE COASTLINE EARLY SUNDAY MORNING. SWELL HEIGHTS ARE EXPECTED TO RANGE FROM 8 TO 12 FT AT MOST BEACHES DURING THIS TIME FRAME. THE THREAT OF BEACH HAZARDS IS PRIMARILY ALONG WEST TO NORTHWEST FACING BEACHES. HAZARDS INCLUDE AN INCREASED RISK OF RIP CURRENTS...SNEAKER WAVES...AND LARGE SHORE BREAKS. CAZ006-505-509-529-530-022200- /O.CON.KMTR.BH.S.0004.000000T0000Z-170403T1800Z/ SAN FRANCISCO- COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 440 AM PDT SUN APR 2 2017 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH MONDAY MORNING... * HAZARDS...LARGE SHORE BREAKS...RIP CURRENTS...AND SNEAKER WAVES. * TIMING...THROUGH MONDAY MORNING * LOCATION...THE COASTLINE FROM NORTHERN SONOMA COUNTY SOUTH THROUGH SOUTHERN MONTEREY COUNTY. IN PARTICULAR WEST TO NORTHWEST FACING BEACHES INCLUDING BUT NOT LIMITED TO OCEAN BEACH...MONTARA STATE BEACH...MARINA STATE BEACH...MONTEREY STATE BEACH...AND ASILOMAR STATE BEACH. * POTENTIAL IMPACTS...LARGE SHORE BREAKS COULD INJURE BEACHGOERS. SNEAKER WAVES COULD KNOCK UNSUSPECTING PEOPLE INTO THE COLD... TURBULENT OCEAN. RIP CURRENTS COULD PULL PEOPLE OUT TO SEA. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BEACH HAZARDS STATEMENT MEANS THE POTENTIALLY DANGEROUS CONDITIONS MAY EXIST ON SPECIFIC BEACHES. THESE HAZARDS MAY INCLUDE LARGE SHORE BREAK...STRONG RIP CURRENTS...STRONG LONGSHORE CURRENTS AND POSSIBLY SNEAKER WAVES. ALL OF WHICH COULD BE LIFE THREATENING. BE SURE TO ALWAYS KEEP YOUR EYES ON THE OCEAN. && $$
199 WHUS46 KMTR 022141 CFWMTR COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 241 PM PDT SUN APR 2 2017 ...LARGE LONG PERIOD SWELLS WILL IMPACT THE COASTLINE FROM NORTHERN SONOMA COUNTY TO SOUTHERN MONTEREY COUNTY THROUGH MONDAY MORNING... .BEACH HAZARDS STATEMENT IS IN EFFECT THROUGH MONDAY MORNING. FORERUNNERS WILL IMPACT THE COASTLINE EARLY SUNDAY MORNING. SWELL HEIGHTS ARE EXPECTED TO RANGE FROM 9 TO 13 FT AT MOST BEACHES DURING THIS TIME FRAME. THE THREAT OF BEACH HAZARDS IS PRIMARILY ALONG WEST TO NORTHWEST FACING BEACHES. HAZARDS INCLUDE AN INCREASED RISK OF RIP CURRENTS...SNEAKER WAVES...AND LARGE SHORE BREAKS. CAZ006-505-509-529-530-031000- /O.CON.KMTR.BH.S.0004.000000T0000Z-170403T1800Z/ SAN FRANCISCO- COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 241 PM PDT SUN APR 2 2017 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH MONDAY MORNING... * HAZARDS...LARGE SHORE BREAKS...RIP CURRENTS...AND SNEAKER WAVES. * TIMING...THROUGH MONDAY MORNING * LOCATION...THE COASTLINE FROM NORTHERN SONOMA COUNTY SOUTH THROUGH SOUTHERN MONTEREY COUNTY. IN PARTICULAR WEST TO NORTHWEST FACING BEACHES INCLUDING BUT NOT LIMITED TO OCEAN BEACH...MONTARA STATE BEACH...MARINA STATE BEACH...MONTEREY STATE BEACH...AND ASILOMAR STATE BEACH. * POTENTIAL IMPACTS...LARGE SHORE BREAKS COULD INJURE BEACHGOERS. SNEAKER WAVES COULD KNOCK UNSUSPECTING PEOPLE INTO THE COLD... TURBULENT OCEAN. RIP CURRENTS COULD PULL PEOPLE OUT TO SEA. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BEACH HAZARDS STATEMENT MEANS THE POTENTIALLY DANGEROUS CONDITIONS MAY EXIST ON SPECIFIC BEACHES. THESE HAZARDS MAY INCLUDE LARGE SHORE BREAK...STRONG RIP CURRENTS...STRONG LONGSHORE CURRENTS AND POSSIBLY SNEAKER WAVES. ALL OF WHICH COULD BE LIFE THREATENING. BE SURE TO ALWAYS KEEP YOUR EYES ON THE OCEAN. && $$
192 WHUS46 KMTR 031002 CFWMTR COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 302 AM PDT MON APR 3 2017 ...LARGE LONG PERIOD SWELLS WILL IMPACT THE COASTLINE FROM NORTHERN SONOMA COUNTY TO SOUTHERN MONTEREY COUNTY THROUGH MONDAY MORNING... .BEACH HAZARDS STATEMENT IS IN EFFECT THROUGH MONDAY MORNING AS LONGER PERIOD SWELLS IMPACT THE CENTRAL COAST. SURF HEIGHTS ARE EXPECTED TO RANGE FROM 10 TO 13 FT. CAZ006-505-509-529-530-031800- /O.CON.KMTR.BH.S.0004.000000T0000Z-170403T1800Z/ SAN FRANCISCO- COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 302 AM PDT MON APR 3 2017 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 11 AM PDT THIS MORNING... * HAZARDS...LARGE SHORE BREAKS...RIP CURRENTS...AND SNEAKER WAVES. * TIMING...THROUGH MONDAY MORNING * LOCATION...THE COASTLINE FROM NORTHERN SONOMA COUNTY SOUTH THROUGH SOUTHERN MONTEREY COUNTY. IN PARTICULAR WEST TO NORTHWEST FACING BEACHES INCLUDING BUT NOT LIMITED TO OCEAN BEACH...MONTARA STATE BEACH...MARINA STATE BEACH...MONTEREY STATE BEACH...AND ASILOMAR STATE BEACH. * POTENTIAL IMPACTS...LARGE SHORE BREAKS COULD INJURE BEACHGOERS. SNEAKER WAVES COULD KNOCK UNSUSPECTING PEOPLE INTO THE COLD... TURBULENT OCEAN. RIP CURRENTS COULD PULL PEOPLE OUT TO SEA. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BEACH HAZARDS STATEMENT MEANS THE POTENTIALLY DANGEROUS CONDITIONS MAY EXIST ON SPECIFIC BEACHES. THESE HAZARDS MAY INCLUDE LARGE SHORE BREAK...STRONG RIP CURRENTS...STRONG LONGSHORE CURRENTS AND POSSIBLY SNEAKER WAVES. ALL OF WHICH COULD BE LIFE THREATENING. BE SURE TO ALWAYS KEEP YOUR EYES ON THE OCEAN. && $$
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 1, 2:50 AM PDT | Small Craft Advisory | MTR | 66 hr |
Nearby
Beach Hazards Statements in California, 2017Every beach hazards statement in 2017
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.