Alert archive / California / Beach Hazards Statements in 2016

Beach Hazards Statement 21, NWS San Diego, CA

July 25, 2016San Diego County, California

NWS San Diego, CA issued this beach hazards statement at Jul 25, 2016, 7:42 AM PDT for San Diego County, California. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Jul 25, 2016, 7:42 AM PDT (14:42 UTC)
Expired
Jul 25, 2016, 10:00 AM PDT
In force
2 hr
Issued by
NWS San Diego, CA

County San Diego County, CA

The radar

The San Diego radar (KNKX), 28 km from the middle of the area, began a volume at 14:44 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, 2.7 hours before the alert went out and 47 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 2016-07-25Temperature 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, San Diego, CA at 12:00Z on 2016-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 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
1776 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

793 
WHUS46 KSGX 251442
CFWSGX

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN DIEGO CA
742 AM PDT MON JUL 25 2016

...LIGHTNING POSSIBLE AT THE BEACHES IN EXTREME SOUTHERN SAN DIEGO
COUNTY THIS MORNING...

.SCATTERED THUNDERSTORMS MOVING NEAR EXTREME SOUTHERN SAN DIEGO
COUNTY WILL CREATE THE THREAT OF LIGHTNING AT THE BEACHES THROUGH
10 AM THIS MORNING. THE GREATEST THREAT WILL BE NEAR IMPERIAL
BEACH. CONDITIONS SHOULD IMPROVE BY LATE THIS MORNING.

CAZ043-251700-
/O.NEW.KSGX.BH.S.0021.160725T1442Z-160725T1700Z/
SAN DIEGO COUNTY COASTAL AREAS-
742 AM PDT MON JUL 25 2016

...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 10 AM PDT THIS
MORNING...

THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A BEACH
HAZARDS STATEMENT FOR POSSIBLE LIGHTNING AT IMPERIAL
BEACH...WHICH IS IN EFFECT UNTIL 10 AM PDT THIS MORNING.

* LOCATIONS...EXTREME SOUTHERN SAN DIEGO COUNTY...MAINLY IMPERIALBEACH.

* TIMING...THROUGH 10 AM THIS MORNING.

* IMPACTS...DANGEROUS LIGHTNING STRIKES COULD RESULT IN INJURY OR
  DEATH IF STRUCK.

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.

&&

$$

JJT

HTTP://WWW.WEATHER.GOV/SANDIEGO
1 follow-up statement
030 
WHUS46 KSGX 251652
CFWSGX

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN DIEGO CA
952 AM PDT MON JUL 25 2016

CAZ043-251800-
/O.EXP.KSGX.BH.S.0021.000000T0000Z-160725T1700Z/
SAN DIEGO COUNTY COASTAL AREAS-
952 AM PDT MON JUL 25 2016

...BEACH HAZARDS STATEMENT WILL EXPIRE AT 10 AM PDT THIS
MORNING...

THUNDERSTORMS HAVE DIMINISHED ACROSS THE AREA THIS MORNING.
THEREFORE...THE BEACH HAZARD STATEMENT FOR LIGHTNING AT THE
BEACHES WILL EXPIRE AT 10 AM THIS MORNING. THERE IS A SLIGHT
CHANCE FOR ADDITIONAL THUNDERSTORMS ALONG BEACHES IN SOUTHERN 
SAN DIEGO COUNTY THROUGH THIS AFTERNOON.

$$

JJT

HTTP://WWW.WEATHER.GOV/SANDIEGO

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.