Alert archive / California / Beach Hazards Statements in 2023

Beach Hazards Statement 21, NWS San Diego, CA

December 22, 2023Orange County, San Diego County, California

NWS San Diego, CA issued this beach hazards statement at Dec 22, 2023, 10:37 AM PST for Orange County, San Diego County, California. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued: Dec 22, 2023, 10:37 AM PST (18:37 UTC)
Expired: Dec 22, 2023, 4:00 PM PST
In force: 5 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 18:38 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, 6.6 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 32 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 987 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 140 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

604 
WHUS46 KSGX 221837
CFWSGX

Coastal Hazard Message
National Weather Service San Diego CA
1037 AM PST Fri Dec 22 2023

CAZ043-552-230000-
/O.NEW.KSGX.BH.S.0021.231222T1837Z-231223T0000Z/
San Diego County Coastal Areas-Orange County Coastal Areas-
1037 AM PST Fri Dec 22 2023

...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...

* WHAT...Periods of lightning expected at the beaches.

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

* WHEN...Until 4 PM PST this afternoon.

* IMPACTS...Cloud-to-ground lighting may occur, which may cause
  serious injury or death.

* ADDITIONAL DETAILS...The highest chance for lightning will occur
  late this evening through the early morning hours...however it
  only takes one lightning strike to injure or kill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 21, 6:47 PM PST	Beach Hazards Statement	SGX	Orange, San Diego	15 hr
Dec 21, 10:01 PM PST	Special Marine Warning	SGX		59 min
Dec 21, 11:29 PM PST	Areal Flood Advisory	SGX	Orange, San Diego	116 min
Dec 21, 11:51 PM PST	Special Weather Statement	SGX	San Diego	39 min
Dec 22, 4:09 AM PST	Areal Flood Advisory	SGX	Riverside	4 hr
Dec 22, 9:33 AM PST	Special Marine Warning	SGX		42 min
Dec 22, 9:35 AM PST	Areal Flood Advisory	SGX	San Diego	3 hr
Dec 22, 9:47 AM PST	Areal Flood Advisory	SGX	San Bernardino	117 min
Dec 22, 12:12 PM PST	Areal Flood Advisory	SGX	San Diego	118 min

Nearby

Beach Hazards Statements in California, 2023 Every beach hazards statement in 2023

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.