Alert archive / California / Beach Hazards Statements in 2014

Beach Hazards Statement 1, NWS San Francisco Bay Area, CA

January 10, 20146 counties in California

NWS San Francisco Bay Area, CA issued this beach hazards statement at Jan 10, 2014, 10:24 PM PST for 6 counties in California. It took effect at Jan 11, 2014, 10:00 PM PST. It was in force for 17 hr.

The area

The counties it named.

The facts

Issued
Jan 10, 2014, 10:24 PM PST (06:24 UTC)
In effect from
Jan 11, 2014, 10:00 PM PST
Expired
Jan 12, 2014, 2:44 PM PST
In force
17 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 06:29 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, 6.4 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 2014-01-11Temperature 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 2014-01-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -51 square meters per square second.193958Sfc1 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
1647 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
-51 m²/s²
0-3 km storm-relative helicity
-37 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

172 
WHUS46 KMTR 110624
CFWMTR

URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1024 PM PST FRI JAN 10 2014

A STORM SYSTEM OFF THE PACIFIC NORTHWEST WILL GENERATE LARGE
SWELLS THAT WILL ARRIVE ALONG THE COAST SATURDAY NIGHT. LARGE
SWELLS WILL CONTINUE INTO SUNDAY BEFORE DECREASING SUNDAY NIGHT.

CAZ006-505-509-529-530-120630-
/O.NEW.KMTR.BH.S.0001.140112T0600Z-140113T0600Z/
SAN FRANCISCO-
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
1024 PM PST FRI JAN 10 2014

...BEACH HAZARDS STATEMENT IN EFFECT FROM SATURDAY EVENING
THROUGH SUNDAY EVENING...

THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS
ISSUED A BEACH HAZARDS STATEMENT WHICH IS IN EFFECT FROM SATURDAY
EVENING THROUGH SUNDAY EVENING.

* LOCATION...THE ENTIRE COASTLINE FROM SONOMA COUNTY SOUTH THROUGH
  MONTEREY COUNTY.

* TIMING...LATE SATURDAY NIGHT INTO SUNDAY.

* IMPACTS...HIGHER THAN NORMAL SURF WITH LONG PERIOD INTERVALS
  INCREASE THE THREAT OF SNEAKER WAVES AND RIP CURRENTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...PEOPLE VENTURING NEAR THE
OCEAN THIS WEEK SHOULD BE ALERT FOR LARGER THAN NORMAL BREAKING
WAVES CAPABLE OF PRODUCING SNEAKER WAVES OR RIP CURRENTS WHICH
CAN SWEEP A PERSON OUT TO SEA.

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
4 follow-up statements
864 
WHUS46 KMTR 111426
CFWMTR

URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
626 AM PST SAT JAN 11 2014

A STORM SYSTEM OFF THE PACIFIC NORTHWEST WILL GENERATE LARGE
SWELLS THAT WILL ARRIVE ALONG THE COAST SATURDAY NIGHT. LARGE
SWELLS WILL CONTINUE INTO SUNDAY BEFORE DECREASING SUNDAY NIGHT.

CAZ006-505-509-529-530-121430-
/O.CON.KMTR.BH.S.0001.140112T0600Z-140113T0600Z/
SAN FRANCISCO-
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
626 AM PST SAT JAN 11 2014

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THIS EVENING
THROUGH SUNDAY EVENING...

* LOCATION...THE ENTIRE COASTLINE FROM SONOMA COUNTY SOUTH 
  THROUGH MONTEREY COUNTY. 

* TIMING...LATE SATURDAY NIGHT INTO SUNDAY.

* IMPACTS...HIGHER THAN NORMAL SURF WITH LONG PERIOD INTERVALS 
  INCREASE THE THREAT OF SNEAKER WAVES AND RIP CURRENTS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...PEOPLE VENTURING NEAR THE
OCEAN THIS WEEKEND SHOULD BE ALERT FOR LARGER THAN NORMAL BREAKING
WAVES CAPABLE OF PRODUCING SNEAKER WAVES OR RIP CURRENTS WHICH
CAN SWEEP A PERSON OUT TO SEA.

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
476 
WHUS46 KMTR 112245
CFWMTR

URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
245 PM PST SAT JAN 11 2014

A STORM SYSTEM OFF THE PACIFIC NORTHWEST WILL GENERATE LARGE
SWELLS THAT WILL ARRIVE ALONG THE COAST TONIGHT. LARGE
SWELLS WILL CONTINUE INTO SUNDAY BEFORE DECREASING SUNDAY NIGHT.

CAZ006-505-509-529-530-122245-
/O.CON.KMTR.BH.S.0001.140112T0600Z-140113T0600Z/
SAN FRANCISCO-
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
245 PM PST SAT JAN 11 2014

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 10 PM PST THIS
EVENING THROUGH SUNDAY EVENING...

* LOCATION...THE ENTIRE COASTLINE FROM SONOMA COUNTY SOUTH 
  THROUGH MONTEREY COUNTY. 

* TIMING...LATE TONIGHT INTO SUNDAY.

* IMPACTS...HIGHER THAN NORMAL SURF WITH LONG PERIOD INTERVALS 
  INCREASE THE THREAT OF SNEAKER WAVES AND RIP CURRENTS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...PEOPLE VENTURING NEAR THE
OCEAN THIS WEEKEND SHOULD BE ALERT FOR LARGER THAN NORMAL
BREAKING WAVES CAPABLE OF PRODUCING SNEAKER WAVES OR RIP CURRENTS
WHICH CAN SWEEP A PERSON OUT TO SEA.

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
244 
WHUS46 KMTR 121054
CFWMTR

URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
254 AM PST SUN JAN 12 2014

LARGE NORTHWEST SWELL WILL ENTER THE COASTAL WATERS EARLY SUNDAY
AND PERSIST THROUGH SUNDAY AFTERNOON. THE LARGE SWELL WILL PRODUCE
HIGHER THAN NORMAL SURF...ESPECIALLY NORTHWEST FACING BEACHES. LARGE
SWELLS WILL CONTINUE THROUGH SUNDAY AFTERNOON BEFORE DECREASING SUNDAY
EVENING.

CAZ505-122300-
/O.CAN.KMTR.BH.S.0001.000000T0000Z-140113T0600Z/
/O.NEW.KMTR.SU.Y.0001.140112T1054Z-140112T2300Z/
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
254 AM PST SUN JAN 12 2014

...HIGH SURF ADVISORY IN EFFECT UNTIL 3 PM PST THIS AFTERNOON...
...BEACH HAZARDS STATEMENT IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS
ISSUED A HIGH SURF ADVISORY...WHICH IS IN EFFECT UNTIL 3 PM PST
THIS AFTERNOON. THE BEACH HAZARDS STATEMENT HAS BEEN CANCELLED. 

* TIMING...THROUGH SUNDAY AFTERNOON.

* IMPACTS...LARGE NORTHWEST SWELL 14 TO 17 FEET WILL IMPACT
  NORTHWEST FACING COASTAL SECTIONS THROUGH SUNDAY AFTERNOON.
  HIGHER THAN NORMAL SURF WITH LONG PERIOD INTERVALS INCREASE THE
  THREAT OF SNEAKER WAVES AND RIP CURRENTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...PEOPLE VENTURING NEAR THE
OCEAN THIS WEEKEND SHOULD BE ALERT FOR LARGER THAN NORMAL
BREAKING WAVES CAPABLE OF PRODUCING SNEAKER WAVES OR RIP CURRENTS
WHICH CAN SWEEP A PERSON OUT TO SEA. LOCALIZED BEACH EROSION WILL
ALSO BE POSSIBLE WITH THE HIGHER THAN NORMAL SURF.

&&

$$

CAZ006-509-529-530-122300-
/O.EXT.KMTR.BH.S.0001.000000T0000Z-140112T2300Z/
SAN FRANCISCO-SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
254 AM PST SUN JAN 12 2014

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

* LOCATION...THE COASTLINE FROM SAN FRANCISCO COUNTY SOUTH
  THROUGH MONTEREY COUNTY.

* TIMING...THROUGH SUNDAY AFTERNOON.

* IMPACTS...HIGHER THAN NORMAL SURF WITH LONG PERIOD INTERVALS 
  INCREASE THE THREAT OF SNEAKER WAVES AND RIP CURRENTS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...PEOPLE VENTURING NEAR THE
OCEAN THIS WEEKEND SHOULD BE ALERT FOR LARGER THAN NORMAL
BREAKING WAVES CAPABLE OF PRODUCING SNEAKER WAVES OR RIP CURRENTS
WHICH CAN SWEEP A PERSON OUT TO SEA.

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
456 
WHUS46 KMTR 122244
CFWMTR

URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
244 PM PST SUN JAN 12 2014

THE LARGE NORTHWEST SWELL THAT MOVED INTO THE COASTAL WATERS
EARLIER TODAY WILL CONTINUE TO SPREAD SOUTH. LARGE SWELLS WILL
CONTINUE THROUGH SUNDAY AFTERNOON BEFORE DECREASING SUNDAY
EVENING.

CAZ505-122345-
/O.EXP.KMTR.SU.Y.0001.000000T0000Z-140112T2300Z/
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
244 PM PST SUN JAN 12 2014

...HIGH SURF ADVISORY WILL EXPIRE AT 3 PM PST THIS AFTERNOON...

LARGE SWELLS ARE STARTING TO DECREASE ACROSS THE COASTAL NORTH
BAY. THERE COULD STILL BE SOME HIGHER THAN NORMAL BREAKERS AT
TIMES THROUGH THE EVENING HOURS.

$$

CAZ530-130200-
/O.CAN.KMTR.BH.S.0001.000000T0000Z-140112T2300Z/
/O.EXB.KMTR.SU.Y.0001.000000T0000Z-140113T0200Z/
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
244 PM PST SUN JAN 12 2014

...HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM PST THIS EVENING...
...BEACH HAZARDS STATEMENT IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS
ISSUED A HIGH SURF ADVISORY...WHICH IS IN EFFECT UNTIL 6 PM PST
THIS EVENING. THE BEACH HAZARDS STATEMENT HAS BEEN CANCELLED. 


* TIMING...THROUGH EARLY SUNDAY EVENING.

* IMPACTS...HIGHER THAN NORMAL SURF WITH LONG PERIOD INTERVALS 
  INCREASE THE THREAT OF SNEAKER WAVES AND RIP CURRENTS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...PEOPLE VENTURING NEAR THE
OCEAN THIS AFTERNOON SHOULD BE ALERT FOR LARGER THAN NORMAL
BREAKING WAVES CAPABLE OF PRODUCING SNEAKER WAVES OR RIP CURRENTS
WHICH CAN SWEEP A PERSON OUT TO SEA.

&&


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.

&&

$$

CAZ006-509-529-122345-
/O.CAN.KMTR.BH.S.0001.000000T0000Z-140112T2300Z/
SAN FRANCISCO-SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
244 PM PST SUN JAN 12 2014

...BEACH HAZARDS STATEMENT IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS
CANCELLED THE BEACH HAZARDS STATEMENT. 

ALTHOUGH THE SWELL HEIGHTS HAVE STARTED TO DECREASE ACROSS THE
COASTAL BUOYS...THERE STILL COULD BE SOME OCCASIONAL HIGH BREAKING
WAVES AT TIMES AT THE COAST THROUGH THE REST OF THE AFTERNOON.

$$


HTTP://WWW.WEATHER.GOV/SANFRANCISCO

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 10, 9:11 PM PSTSmall Craft AdvisoryMTR60 hr
Jan 10, 9:11 PM PSTSmall Craft Advisory for Hazardous SeasMTR36 hr
Jan 11, 2:40 AM PSTSmall Craft Advisory for Rough BarMTR42 hr

Nearby

Beach Hazards Statements in California, 2014Every beach hazards statement in 2014

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.