Alert archive / California / Beach Hazards Statements in 2016

Beach Hazards Statement 19, NWS San Francisco Bay Area, CA

November 23, 20166 counties in California

NWS San Francisco Bay Area, CA issued this beach hazards statement at Nov 23, 2016, 3:54 AM PST for 6 counties in California. It took effect at Nov 23, 2016, 1:00 PM PST. It was in force for 4 days.

The area

The counties it named.

The facts

Issued
Nov 23, 2016, 3:54 AM PST (11:54 UTC)
In effect from
Nov 23, 2016, 1:00 PM PST
Expired
Nov 27, 2016, 3:00 PM PST
In force
4 days
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, 11.9 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.

Skew-T log-pSkew-T log-p diagram, Oakland, CA at 00:00Z on 2016-11-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Oakland, CA at 00:00Z on 2016-11-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1268 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
119 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

810 
WHUS46 KMTR 231154
CFWMTR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
354 AM PST WED NOV 23 2016

...LARGE LONG-PERIOD SWELLS DUE TO ARRIVE ALONG THE COAST
WEDNESDAY...

WEST TO NORTHWEST SWELLS ARE EXPECTED TO INCREASE TO 11 TO 13 FEET
WEDNESDAY AFTERNOON WITH A 15 SECOND PERIOD. THESE SWELLS ARE
CAPABLE OF PRODUCING SNEAKER WAVES.

CAZ006-505-509-529-530-250500-
/O.NEW.KMTR.BH.S.0019.161123T2100Z-161125T0500Z/
SAN FRANCISCO-
COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
354 AM PST WED NOV 23 2016

...BEACH HAZARDS STATEMENT IN EFFECT FROM 1 PM PST THIS AFTERNOON
THROUGH THURSDAY EVENING...

THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED A BEACH
HAZARDS STATEMENT FOR SNEAKER WAVES WHICH IS IN EFFECT FROM 1 PM
PST THIS AFTERNOON THROUGH THURSDAY EVENING.

* TIMING...WEDNESDAY AFTERNOON THROUGH THURSDAY NIGHT

* LOCATION...ALONG THE BEACHES FROM SONOMA COUNTY TO MONTEREY
  COUNTY

* POTENTIAL IMPACTS...SNEAKER WAVES WHICH CAN SWEEP BEACHGOERS
  INTO THE WATER FROM THE BEACH OR 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. FISHERMAN SHOULD
AVOID FISHING FROM ROCKS OR JETTIES.

&&

$$
10 follow-up statements
182 
WHUS46 KMTR 231847
CFWMTR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
1047 AM PST WED NOV 23 2016

...LARGE LONG-PERIOD SWELLS ALONG THE COAST WEDNESDAY...

WEST TO NORTHWEST SWELLS OF 11 TO 13 FEET WEDNESDAY AFTERNOON
WITH A 15 SECOND PERIOD. THESE SWELLS ARE CAPABLE OF PRODUCING
SNEAKER WAVES... RIP CURRENTS... AND LARGE SHORE BREAK.

CAZ006-505-509-529-530-240700-
/O.CON.KMTR.BH.S.0019.161123T2100Z-161125T0500Z/
SAN FRANCISCO-
COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
1047 AM PST WED NOV 23 2016

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THURSDAY
EVENING...

* TIMING...WEDNESDAY AFTERNOON THROUGH THURSDAY 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. FISHERMAN
SHOULD AVOID FISHING FROM ROCKS OR JETTIES.

&&

$$
157 
WHUS46 KMTR 240646
CFWMTR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
1046 PM PST WED NOV 23 2016

...LARGE SWELLS ALONG THE COAST THIS EVENING INTO THANKSGIVING...

NORTHWEST SWELLS 12 TO 15 FEET WITH SWELL PERIODS 15 SECONDS THIS
EVENING WILL GRADUALLY SUBSIDE ON THANKSGIVING. THESE SWELLS ARE
CAPABLE OF PRODUCING SNEAKER WAVES...RIP CURRENTS...AND LARGE SHORE
BREAK.

CAZ006-505-509-529-530-241815-
/O.CON.KMTR.BH.S.0019.000000T0000Z-161125T0500Z/
SAN FRANCISCO-
COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
1046 PM PST WED NOV 23 2016

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THURSDAY
EVENING...

* TIMING...THIS EVENING THROUGH THANKSGIVING.

* 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. FISHERMAN
SHOULD AVOID FISHING FROM ROCKS OR JETTIES.

&&

$$
105 
WHUS46 KMTR 241840
CFWMTR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
1040 AM PST THU NOV 24 2016

...LARGE SWELLS ALONG THE COAST THROUGH THIS EVENING...

NORTHWEST SWELLS 12 TO 15 FEET WITH SWELL PERIODS 15 SECONDS ARE
EXPECTED THROUGH THE DAY TODAY. THESE SWELLS ARE CAPABLE OF
PRODUCING SNEAKER WAVES...RIP CURRENTS...AND LARGE SHORE BREAK.

CAZ006-505-509-529-530-250500-
/O.CON.KMTR.BH.S.0019.000000T0000Z-161125T0500Z/
SAN FRANCISCO-
COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
1040 AM PST THU NOV 24 2016

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 9 PM PST THIS
EVENING...

* TIMING...UNTIL 9 PM THIS EVENING.

* 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. FISHERMAN
SHOULD AVOID FISHING FROM ROCKS OR JETTIES.

&&

$$
727 
WHUS46 KMTR 250439
CFWMTR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
839 PM PST THU NOV 24 2016

...LARGE SWELLS ALONG THE COAST THROUGH FRIDAY AFTERNOON...

NORTHWEST SWELLS 12 TO 15 FEET WITH SWELL PERIODS 14 TO 15 SECONDS
ARE EXPECTED TO CONTINUE THROUGH THE DAY ON FRIDAY. THESE SWELLS
ARE CAPABLE OF PRODUCING SNEAKER WAVES...RIP CURRENTS...AND LARGE
SHORE BREAK.

CAZ006-505-509-529-530-252200-
/O.EXT.KMTR.BH.S.0019.000000T0000Z-161126T0200Z/
SAN FRANCISCO-
COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
839 PM PST THU NOV 24 2016

...BEACH HAZARDS STATEMENT NOW IN EFFECT THROUGH FRIDAY
AFTERNOON...

* TIMING...UNTIL 6 PM FRIDAY.

* 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. FISHERMAN
SHOULD AVOID FISHING FROM ROCKS OR JETTIES.

&&

$$
996 
WHUS46 KMTR 252140
CFWMTR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
140 PM PST FRI NOV 25 2016

...HAZARDOUS BEACH CONDITIONS CONTINUE UNTIL THIS EVENING...

NORTHWEST SWELLS 11 TO 13 FEET WITH SWELL PERIODS 13 TO 15
SECONDS ARE EXPECTED TO CONTINUE INTO THIS EVENING. THESE SWELLS
ARE CAPABLE OF PRODUCING SNEAKER WAVES...RIP CURRENTS...AND LARGE
SHORE BREAK. THE SWELL AND PERIOD ARE EXPECTED TO DROP BELOW
CRITERIA ON SATURDAY. SWELLS BUILD AGAIN ON SUNDAY.

CAZ006-505-509-529-530-260200-
/O.CON.KMTR.BH.S.0019.000000T0000Z-161126T0200Z/
SAN FRANCISCO-
COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
140 PM PST FRI NOV 25 2016

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 6 PM PST THIS
EVENING...

* TIMING...UNTIL 6 PM FRIDAY.

* 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. FISHERMAN
SHOULD AVOID FISHING FROM ROCKS OR JETTIES.

&&

$$
988 
WHUS46 KMTR 260159
CFWMTR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
559 PM PST FRI NOV 25 2016

...HAZARDOUS BEACH CONDITIONS CONTINUE THROUGH SATURDAY NIGHT...

NORTHWEST SWELLS 12 TO 14 FEET WITH SWELL PERIODS 13 TO 15
SECONDS ARE NOW EXPECTED TO CONTINUE THROUGH SATURDAY NIGHT.
THESE SWELLS ARE CAPABLE OF PRODUCING SNEAKER WAVES...RIP
CURRENTS... AND LARGE SHORE BREAK. 

CAZ006-505-509-529-530-262300-
/O.EXT.KMTR.BH.S.0019.000000T0000Z-161127T1100Z/
SAN FRANCISCO-
COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
559 PM PST FRI NOV 25 2016

...BEACH HAZARDS STATEMENT NOW IN EFFECT THROUGH LATE SATURDAY
NIGHT...

* TIMING...UNTIL 3 AM SUNDAY.

* 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. FISHERMAN
SHOULD AVOID FISHING FROM ROCKS OR JETTIES.

&&

$$
772 
WHUS46 KMTR 261358
CFWMTR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
558 AM PST SAT NOV 26 2016

...HAZARDOUS BEACH CONDITIONS CONTINUE THROUGH TONIGHT...

NORTHWEST SWELLS 12 TO 14 FEET WITH SWELL PERIODS 13 TO 15 SECONDS
ARE NOW EXPECTED TO CONTINUE THROUGH TONIGHT. THESE SWELLS ARE
CAPABLE OF PRODUCING SNEAKER WAVES...RIP CURRENTS... AND LARGE
SHORE BREAK.

CAZ006-505-509-529-530-262200-
/O.CON.KMTR.BH.S.0019.000000T0000Z-161127T1100Z/
SAN FRANCISCO-
COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
558 AM PST SAT NOV 26 2016

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE TONIGHT...

* TIMING...UNTIL 3 AM SUNDAY.

* 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. FISHERMAN
SHOULD AVOID FISHING FROM ROCKS OR JETTIES.

&&

$$
268 
WHUS46 KMTR 262113
CFWMTR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
113 PM PST SAT NOV 26 2016

...HAZARDOUS BEACH CONDITIONS CONTINUE TONIGHT AND INTO SUNDAY...

NORTHWEST SWELLS 12 TO 14 FEET WITH SWELL PERIODS 12 TO
13 SECONDS ARE NOW EXPECTED TO CONTINUE THROUGH TONIGHT AND INTO
SUNDAY. THESE SWELLS ARE CAPABLE OF PRODUCING SNEAKER WAVES...RIP
CURRENTS... AND LARGE SHORE BREAK.

CAZ006-505-509-529-530-271500-
/O.EXT.KMTR.BH.S.0019.000000T0000Z-161127T2300Z/
SAN FRANCISCO-
COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
113 PM PST SAT NOV 26 2016

...BEACH HAZARDS STATEMENT NOW IN EFFECT THROUGH SUNDAY
AFTERNOON...

* TIMING...UNTIL 3 PM SUNDAY.

* 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. FISHERMAN
SHOULD AVOID FISHING FROM ROCKS OR JETTIES.

&&

$$
664 
WHUS46 KMTR 270925
CFWMTR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
125 AM PST SUN NOV 27 2016

...HAZARDOUS BEACH CONDITIONS TODAY...

NORTHWEST SWELLS 12 TO 14 FEET WITH PERIODS 12 TO 13 SECONDS WILL
CONTINUE  TODAY. THESE SWELLS ARE CAPABLE OF PRODUCING SNEAKER
WAVES...RIP CURRENTS...AND LARGE SHORE BREAK.

CAZ006-505-509-529-530-272300-
/O.CON.KMTR.BH.S.0019.000000T0000Z-161127T2300Z/
SAN FRANCISCO-
COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
125 AM PST SUN NOV 27 2016

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 3 PM PST TODAY...

* TIMING...UNTIL 3 PM PST TODAY.

* 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. FISHERMAN
SHOULD AVOID FISHING FROM ROCKS OR JETTIES.

&&

$$
763 
WHUS46 KMTR 272248
CFWMTR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
248 PM PST SUN NOV 27 2016



CAZ006-505-509-529-530-280000-
/O.EXP.KMTR.BH.S.0019.000000T0000Z-161127T2300Z/
SAN FRANCISCO-
COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
248 PM PST SUN NOV 27 2016

...BEACH HAZARDS STATEMENT WILL EXPIRE AT 3 PM PST THIS
AFTERNOON...

BEACH HAZARD STATEMENT WILL BE ALLOWED TO EXPIRE AS SEAS CONTINUE
TO SUBSIDE AND BEACH CONDITIONS IMPROVE.

$$

The office that day

Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 23, 8:49 AM PSTSmall Craft Advisory for Rough BarMTR5 days
Nov 23, 2:29 PM PSTSmall Craft AdvisoryMTR31 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.