Alert archive / California / Beach Hazards Statements in 2016

Beach Hazards Statement 4, NWS San Francisco Bay Area, CA

March 20, 2016Monterey County, California

NWS San Francisco Bay Area, CA issued this beach hazards statement at Mar 20, 2016, 5:56 AM PDT for Monterey County, California. It was in force for 17 hr.

The area

The counties it named.

The facts

Issued
Mar 20, 2016, 5:56 AM PDT (12:56 UTC)
Expired
Mar 20, 2016, 11:00 PM PDT
In force
17 hr
Issued by
NWS San Francisco Bay Area, CA

County Monterey County, CA

The radar

The San Francisco radar (KMUX), 115 km from the middle of the area, began a volume at 12:57 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

Vandenberg AFB, CA (KVBG), launched 12:00Z, 0.9 hours before the alert went out and 183 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, Vandenberg AFB, CA at 12:00Z on 2016-03-20Temperature 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, Vandenberg AFB, CA at 12:00Z on 2016-03-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -84 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
1620 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
-84 m²/s²
0-3 km storm-relative helicity
42 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

969 
WHUS46 KMTR 201256
CFWMTR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
556 AM PDT SUN MAR 20 2016

CAZ530-210600-
/O.NEW.KMTR.BH.S.0004.160320T1256Z-160321T0600Z/
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
556 AM PDT SUN MAR 20 2016

...BEACH HAZARDS STATEMENT IN EFFECT THROUGH 11 PM PDT THIS EVENING...

THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED A BEACH
HAZARDS STATEMENT FOR STRONG RIP CURRENTS AND LARGE SURF WHICH IS
IN EFFECT THROUGH THIS EVENING.

* HAZARDS...A HEIGHTENED RISK OF STRONG RIP CURRENTS AND LARGE
  SURF. THE BEACH HAZARDS STATEMENT MAY NEED TO BE EXTENDED INTO
  MONDAY AS LARGER AND LONGER PERIOD SWELL IS EXPECTED TO ARRIVE
  LATE TONIGHT AND MONDAY MORNING.

* TIMING...THROUGH 11 PM PDT THIS EVENING.

* LOCATION...HEIGHTENED RIP CURRENT RISK IS FOR THE SOUTHERN
  MONTEREY BAY AREA AND THE BIG SUR COAST...INCLUDING MANRESA
  STATE BEACH AND MARINA STATE BEACH.

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.

&&

$$
1 follow-up statement
116 
WHUS46 KMTR 210603
CFWMTR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
1103 PM PDT SUN MAR 20 2016

CAZ530-210715-
/O.EXP.KMTR.BH.S.0004.000000T0000Z-160321T0600Z/
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
1103 PM PDT SUN MAR 20 2016

...BEACH HAZARDS STATEMENT HAS EXPIRED...

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 19, 5:46 PM PDTSmall Craft AdvisoryMTR20 hr
Mar 20, 3:29 AM PDTSmall Craft Advisory for Rough BarMTR71 hr
Mar 20, 3:29 AM PDTSmall Craft AdvisoryMTR9 days

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.