Alert archive / Mississippi / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 21, NWS Memphis, TN

August 4, 1987Marshall County, Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at Aug 4, 1987, 3:26 PM CDT for Marshall County, Mississippi. It was in force for 64 min.

The area

The counties it named.

The facts

Issued
Aug 4, 1987, 3:26 PM CDT (20:26 UTC)
Expired
Aug 4, 1987, 4:30 PM CDT
In force
64 min
Issued by
NWS Memphis, TN
Area
Whole counties

County Marshall 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

Little Rock, AR (KLZK), launched 12:00Z, 8.4 hours before the alert went out and 42 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, Little Rock, AR at 12:00Z on 1987-08-04Temperature 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, Little Rock, AR at 12:00Z on 1987-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 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
3609 m above ground
0-6 km bulk shear
1 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
23 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 KMEM 042026
SVRMEM
MSC093-042130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
326 PM CDT TUE AUG 4 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL  430 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN NORTHWEST MISSISSIPPI
          ...MARSHALL
 
RADAR INDICATED A SEVERE THUNERSTORM NEAR THE MISSIPPI BORDER
AND WILL BE MOVING INTO MARSHALL COUNTY IN NORTH MISSIPPI.
THIS THUNDERSTORM HAS SOME HAIL INDICATED.
 
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.

Nearby

Severe Thunderstorm Warnings in Mississippi, 1987Every severe thunderstorm warning in 1987

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.