Alert archive / California / Beach Hazards Statements in 2014

Beach Hazards Statement 2, NWS San Francisco Bay Area, CA

March 11, 20146 counties in California

NWS San Francisco Bay Area, CA issued this beach hazards statement at Mar 11, 2014, 12:30 PM PDT for 6 counties in California. It took effect at Mar 12, 2014, 8:00 AM PDT. It was in force for 13 hr.

The area

The counties it named.

The facts

Issued
Mar 11, 2014, 12:30 PM PDT (19:30 UTC)
In effect from
Mar 12, 2014, 8:00 AM PDT
Expired
Mar 12, 2014, 9:00 PM PDT
In force
13 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 19:31 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, 7.5 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 12:00Z on 2014-03-11Temperature 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 12:00Z on 2014-03-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -98 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
2126 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-98 m²/s²
0-3 km storm-relative helicity
5 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.

885 
WHUS46 KMTR 111930
CFWMTR

URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1230 PM PDT TUE MAR 11 2014

A LARGE FAST MOVING NORTHWEST SWELL WILL ENTER THE REGION EARLY
WEDNESDAY MORNING AND BUILD INTO THE EVENING HOURS. THIS LARGE
FAST MOVING SWELL WILL RESULT IN AN INCREASED THREAT FOR RIP
CURRENTS AND SNEAKER WAVES. 

CAZ006-505-509-529-530-120900-
/O.NEW.KMTR.BH.S.0002.140312T1500Z-140313T0400Z/
SAN FRANCISCO-
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
1230 PM PDT TUE MAR 11 2014

...BEACH HAZARDS STATEMENT IN EFFECT FROM WEDNESDAY MORNING
THROUGH WEDNESDAY EVENING...

THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS
ISSUED A BEACH HAZARDS STATEMENT FOR SNEAKER WAVES AND RIP
CURRENTS... WHICH IS IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING.

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

* TIMING...WEDNESDAY MORNING THROUGH WEDNESDAY EVENING.

* IMPACTS...INCREASED RISK FOR RIP CURRENTS AND SNEAKER WAVES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BEACH HAZARD 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.

&&

$$


HTTP://WWW.WEATHER.GOV/SANFRANCISCO
4 follow-up statements
816 
WHUS46 KMTR 120357
CFWMTR

URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
857 PM PDT TUE MAR 11 2014

A LARGE FAST MOVING NORTHWEST SWELL WILL ENTER THE REGION EARLY
WEDNESDAY MORNING AND BUILD INTO THE EVENING HOURS. THIS LARGE
FAST MOVING SWELL WILL RESULT IN AN INCREASED THREAT FOR RIP
CURRENTS AND SNEAKER WAVES.

CAZ006-505-509-529-530-121200-
/O.CON.KMTR.BH.S.0002.140312T1500Z-140313T0400Z/
SAN FRANCISCO-
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
857 PM PDT TUE MAR 11 2014

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 8 AM PDT
WEDNESDAY THROUGH WEDNESDAY EVENING...

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

* TIMING...WEDNESDAY MORNING THROUGH WEDNESDAY EVENING.

* IMPACTS...INCREASED RISK FOR RIP CURRENTS AND SNEAKER WAVES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BEACH HAZARD 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.

&&

$$


HTTP://WWW.WEATHER.GOV/SANFRANCISCO
140 
WHUS46 KMTR 121137
CFWMTR

URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
437 AM PDT WED MAR 12 2014

A LARGE FAST MOVING NORTHWEST SWELL WILL ENTER THE REGION THIS
MORNING AND BUILD INTO THE EVENING HOURS. THIS LARGE FAST MOVING
SWELL WILL RESULT IN AN INCREASED THREAT FOR RIP CURRENTS AND
SNEAKER WAVES.

CAZ006-505-509-529-530-122200-
/O.CON.KMTR.BH.S.0002.140312T1500Z-140313T0400Z/
SAN FRANCISCO-
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
437 AM PDT WED MAR 12 2014

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 8 AM PDT THIS
MORNING THROUGH THIS EVENING...

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

* TIMING...THIS MORNING THROUGH THIS EVENING.

* IMPACTS...INCREASED RISK FOR RIP CURRENTS AND SNEAKER WAVES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BEACH HAZARD 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.

&&

$$


HTTP://WWW.WEATHER.GOV/SANFRANCISCO
414 
WHUS46 KMTR 122137
CFWMTR

URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
237 PM PDT WED MAR 12 2014

A FAST MOVING LONG PERIOD NORTHWEST SWELL WILL CONTINUE TO MOVE
THROUGH THE WATERS THIS EVENING. THIS POWERFUL FAST MOVING SWELL
WILL RESULT IN AN INCREASED THREAT FOR RIP CURRENTS AND SNEAKER
WAVES...ESPECIALLY ON WEST FACING BEACHES.

CAZ006-505-509-529-530-130400-
/O.CON.KMTR.BH.S.0002.000000T0000Z-140313T0400Z/
SAN FRANCISCO-
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
237 PM PDT WED MAR 12 2014

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

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

* TIMING...THROUGH THIS EVENING.

* IMPACTS...INCREASED RISK FOR RIP CURRENTS AND SNEAKER WAVES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BEACH HAZARD 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.

&&

$$


HTTP://WWW.WEATHER.GOV/SANFRANCISCO
777 
WHUS46 KMTR 130334
CFWMTR

URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
834 PM PDT WED MAR 12 2014

CAZ006-505-509-529-530-130445-
/O.EXP.KMTR.BH.S.0002.000000T0000Z-140313T0400Z/
SAN FRANCISCO-
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
834 PM PDT WED MAR 12 2014

...BEACH HAZARDS STATEMENT WILL EXPIRE AT 9 PM PDT THIS EVENING...

LONG PERIOD WAVES WILL SLOWLY SUBSIDE OVERNIGHT INTO THURSDAY SO
THE BEACH HAZARD STATEMENT WILL BE ALLOWED TO EXPIRE AT 9 PM.

$$


HTTP://WWW.WEATHER.GOV/SANFRANCISCO

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 11, 10:37 AM PDTWind AdvisoryMTRAlameda, Contra Costa, Marin, Napa, San Mateo, Santa Clara and 2 more21 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.