Alert archive / California / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 3, NWS San Diego, CA

August 3, 1992Imperial County, California

NWS San Diego, CA issued this severe thunderstorm warning at Aug 3, 1992, 8:55 PM PDT for Imperial County, California. It was in force for 65 min.

The area

The counties it named.

The facts

Issued
Aug 3, 1992, 8:55 PM PDT (03:55 UTC)
Expired
Aug 3, 1992, 10:00 PM PDT
In force
65 min
Issued by
NWS San Diego, CA
Area
Whole counties

County Imperial County, CA

The nearest sounding before it

San Diego, CA (KNKX), launched 00:00Z, 3.9 hours before the alert went out and 173 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 00:00Z on 1992-08-04Temperature 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 00:00Z on 1992-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 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
1754 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
78 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 
TTAA00 KSAN 040355 RRA
SVRSAN
CAC025-040500-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
855 PM PDT MON AUG 3 1992
 
THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 PM PDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST CALIFORNIA
 
   ...EASTERN IMPERIAL COUNTY
 
SATELLITE AND RADAR SHOW STRONG THUNDERSTORMS IN WESTERN ARIZONA AND
MEXICO ARE MOVING TOWARDS EASTERN IMPERIAL COUNTY. THESE STORMS ARE
EXPECTED TO ARRIVE IN EASTERN IMPERIAL COUNTY WITHIN THE HOUR.
 
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 8:02 PM PDTSevere Thunderstorm WarningSGXImperial58 min

Nearby

Severe Thunderstorm Warnings in California, 1992Every severe thunderstorm warning in 1992

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.