Alert archive / California / Beach Hazards Statements in 2021

Beach Hazards Statement 5, NWS San Diego, CA

April 1, 2021Orange County, San Diego County, California

NWS San Diego, CA issued this beach hazards statement at Apr 1, 2021, 9:17 AM PDT for Orange County, San Diego County, California. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Apr 1, 2021, 9:17 AM PDT (16:17 UTC)
Expired
Apr 1, 2021, 5:00 PM PDT
In force
8 hr
Issued by
NWS San Diego, CA

Counties Orange County, CA, San Diego County, CA

The radar

The San Diego radar (KNKX), 53 km from the middle of the area, began a volume at 16:20 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

San Diego, CA (KNKX), launched 12:00Z, 4.3 hours before the alert went out and 62 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, San Diego, CA at 12:00Z on 2021-04-01Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, San Diego, CA at 12:00Z on 2021-04-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 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
5445 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
53 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

516 
WHUS46 KSGX 011617
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
917 AM PDT Thu Apr 1 2021

CAZ043-552-020000-
/O.NEW.KSGX.BH.S.0005.210401T1617Z-210402T0000Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
917 AM PDT Thu Apr 1 2021

...LIGHTNING THREAT AT THE BEACHES THROUGH THIS AFTERNOON...

* Lightning...Isolated thunderstorms will occur into early this 
  evening at the beaches of Orange and San Diego counties. 
  Lightning will be the primary threat from these storms.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as strong
rip currents...elevated surf heights...minor tidal overflow...or
lightning are possible at local beaches.  Obey posted warning
signs and flags and talk to a lifeguard before swimming.  Use
caution when in or near the water and always swim near a
lifeguard.

&&

$$

Schenk

https://www.weather.gov/sandiego

Nearby

Beach Hazards Statements in California, 2021Every beach hazards statement in 2021

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.