Alert archive / California / Beach Hazards Statements in 2021

Beach Hazards Statement 14, NWS San Diego, CA

September 24, 2021Orange County, San Diego County, California

NWS San Diego, CA issued this beach hazards statement at Sep 24, 2021, 11:08 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
Sep 24, 2021, 11:08 AM PDT (18:08 UTC)
Expired
Sep 24, 2021, 7:00 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 18:08 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, 6.1 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 2021-09-24Temperature 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 2021-09-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -36 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
1990 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-36 m²/s²
0-3 km storm-relative helicity
15 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

573 
WHUS46 KSGX 241808
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
1108 AM PDT Fri Sep 24 2021

CAZ043-552-250200-
/O.NEW.KSGX.BH.S.0014.210924T1808Z-210925T0200Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
1108 AM PDT Fri Sep 24 2021

...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 7 PM PDT THIS
EVENING...

* WHAT...Thunderstorms are possible through this afternoon at the
  SoCal Beaches.

* WHERE...San Diego County Coastal Areas and Orange County 
  Coastal Areas.

* WHEN...Until 7 PM PDT this evening.

* ADDITIONAL DETAILS...Thunderstorms with cloud to beach strikes
  are a deadly risk to beach goers. Seek immediate shelter when
  thunderstorms are a threat!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$

jmb

The office that day

Everything else NWS San Diego, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 24, 8:56 AM PDTFlash Flood WatchSGXRiverside, San Diego10 hr
Sep 24, 12:13 PM PDTSevere Thunderstorm WarningSGXSan Diego31 min
Sep 24, 12:21 PM PDTFlash Flood Warning Considerable damage threatSGXSan Diego56 min
Sep 24, 1:24 PM PDTSevere Thunderstorm WarningSGXSan Diego51 min
Sep 24, 1:28 PM PDTFlash Flood Warning Considerable damage threatSGXSan Diego2 hr
Sep 24, 2:09 PM PDTFlash Flood Warning Considerable damage threatSGXSan Diego3 hr
Sep 24, 2:41 PM PDTSevere Thunderstorm WarningSGXSan Diego64 min
Sep 24, 2:59 PM PDTSpecial Weather StatementSGXSan Diego61 min
Sep 24, 3:14 PM PDTSpecial Marine WarningSGX91 min
Sep 24, 3:20 PM PDTSevere Thunderstorm WarningSGXSan Diego55 min
Sep 24, 3:47 PM PDTSpecial Weather StatementSGXOrange58 min
Sep 24, 3:56 PM PDTSpecial Marine WarningSGX94 min
Sep 24, 4:40 PM PDTSpecial Marine WarningSGX65 min

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.