Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 178, NWS Jackson, MS

July 11, 1990Lauderdale County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jul 11, 1990, 7:02 PM CDT for Lauderdale County, Mississippi. It was in force for 43 min.

The area

The counties it named.

The facts

Issued
Jul 11, 1990, 7:02 PM CDT (00:02 UTC)
Expired
Jul 11, 1990, 7:45 PM CDT
In force
43 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Lauderdale County, MS

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 0.0 hours before the alert went out and 134 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, Jackson, MS at 00:00Z on 1990-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1303 joules per kilogram.LCLEL10008507005003002001001 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, Jackson, MS at 00:00Z on 1990-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -15 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
1303 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
1555 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-15 m²/s²
0-3 km storm-relative helicity
-3 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 KMEI 120011 COR
SVRMEI
MSC075-120045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECT PLACEMEMT OF STRONGEST STORM...
NATIONAL WEATHER SERVICE MERIDIAN MS
702 PM CDT WED JUL 11 1990

THE NATIONAL WEATHER SERVICE IN MERIDIAN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  745 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN EAST CENTRAL MISSISSIPPI

   ...LAUDERDALE COUNTY

AT 700 PM CDT MERIDIAN WEATHER RADAR INDICATED A CLUSTER OF SEVERE
THUNDERSTORMS OVER NORTHERN LAUDERDALE COUNTY WITH THE STRONGEST
STORM 15 MILES NORTHWEST OF MERIDIAN OR JUST NORTH OF OKATIBEE LAKE.
THE THUNDERSTORMS WERE STATIONARY.
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIzDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

Nearby

Severe Thunderstorm Warnings in Mississippi, 1990Every severe thunderstorm warning in 1990

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.