Alert archive / California / Beach Hazards Statements in 2014

Beach Hazards Statement 9, NWS San Francisco Bay Area, CA

October 3, 20146 counties in California

NWS San Francisco Bay Area, CA issued this beach hazards statement at Oct 3, 2014, 8:48 PM PDT for 6 counties in California. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Oct 3, 2014, 8:48 PM PDT (03:48 UTC)
Expired
Oct 4, 2014, 3:00 AM PDT
In force
6 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 03:49 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, 3.8 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 2014-10-04Temperature 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 2014-10-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 square meters per square second.1939Sfc1 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
3750 m above ground
0-6 km bulk shear
2 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
85 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.

690 
WHUS46 KMTR 040348
CFWMTR

URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
848 PM PDT FRI OCT 3 2014

...INCREASED RISK OF RIP CURRENTS AT SOUTH FACING BEACHES THROUGH
THIS EVENING...

A MODERATE SIZED LONG PERIOD SOUTHWEST SWELL WILL PRODUCE STRONG
RIP CURRENTS ALONG SOUTH TO SOUTHWEST FACING BEACHES THROUGH TONIGHT.


CAZ006-505-509-529-530-041000-
/O.NEW.KMTR.BH.S.0009.141004T0348Z-141004T1000Z/
SAN FRANCISCO-
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
848 PM PDT FRI OCT 3 2014

...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 3 AM PDT SATURDAY...

THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS
ISSUED A BEACH HAZARDS STATEMENT FOR RIP CURRENTS WHICH IS IN
EFFECT UNTIL 3 AM PDT SATURDAY.

* LOCATION...SOUTH TO SOUTHWEST FACING BEACHES IN MARIN AND SANTA
  CRUZ COUNTIES...INCLUDING BUT NOT LIMITED TO...STINSON
  BEACH...SANTA CRUZ BOARDWALK BEACH....AND TWIN LAKES BEACH.

* TIMING...TONIGHT

* IMPACTS...INCREASED RISK OF RIP CURRENTS

PRECAUTIONARY/PREPAREDNESS ACTIONS...A BEACH HAZARD STATEMENT FOR RIP
CURRENTS MEANS THAT CONDITIONS ARE PRESENT TO SUPPORT A HEIGHTENED
RISK OF STRONG RIP CURRENTS. RIP CURRENTS ARE TYPICALLY MORE
FREQUENT AND STRONGER IN THE VICINITY OF JETTIES...INLETS...AND
PIERS. SWIMMERS CAUGHT IN A RIP CURRENT SHOULD SWIM PARALLEL TO
THE COAST TO ESCAPE THE RIP CURRENT BEFORE TRYING TO SWIM FOR
SHORE. SWIMMERS SHOULD ALWAYS SWIM NEAR A LIFEGUARD.

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
1 follow-up statement
893 
WHUS46 KMTR 040938
CFWMTR

URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
238 AM PDT SAT OCT 4 2014

CAZ006-505-509-529-530-041045-
/O.EXP.KMTR.BH.S.0009.000000T0000Z-141004T1000Z/
SAN FRANCISCO-
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
238 AM PDT SAT OCT 4 2014

...BEACH HAZARDS STATEMENT WILL EXPIRE AT 3 AM PDT EARLY THIS
MORNING...

SOUTHERLY SWELL CONTINUES TO DECREASE THIS MORNING AND IS EXPECTED
TO FALL BELOW CRITERIA. PLEASE CONTINUE TO USE CAUTION AT AREA
BEACHES AND NEVER TURN YOUR BACK ON THE OCEAN.

$$

HTTP://WWW.WEATHER.GOV/SANFRANCISCO

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.