Alert archive / California / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 4, NWS San Diego, CA

February 23, 2000Orange County, California

NWS San Diego, CA issued this severe thunderstorm warning at Feb 23, 2000, 1:50 PM PST for Orange County, California. It was in force for 70 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Feb 23, 2000, 1:50 PM PST (21:50 UTC)
Expired
Feb 23, 2000, 3:00 PM PST
In force
70 min
Issued by
NWS San Diego, CA
Area
Whole counties

County Orange County, CA

The radar

The Santa Ana Mts radar (KSOX), 20 km from the middle of the area, began a volume at 21:50 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, 9.8 hours before the alert went out and 111 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 2000-02-23Temperature 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 2000-02-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 square meters per square second.19395878Sfc1 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
1001 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
113 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS56 KSGX 232149
SVRSAN
CAC059-232300-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
150 PM PST WED FEB 23 2000

THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN AND CENTRAL ORANGE COUNTY IN CALIFORNIA

* UNTIL 300 PM PST

* AT 145 PM PST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES SOUTH OF NEWPORT BEACH...MOVING   
  NORTHEAST AT 25 MPH.  THIS STORM IS CAPABLE OF PRODUCING DAMAGING  
  WINDS...VERY HEAVY RAIN...AND FUNNEL CLOUDS.

  REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY  
  WILL RELAY YOUR REPORT TO THE NATIONAL >WEATHER SERVICE FORECAST
  OFFICE IN SAN DIEGO.

$$

LAT...LON 3354 11811 3335 11771 3364 11746 3380 11763

SMALL

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 23, 1:45 PM PSTFlash Flood WarningSGXOrange75 min

Nearby

Severe Thunderstorm Warnings in California, 2000Every severe thunderstorm warning in 2000

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.