Alert archive / Mississippi / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 21, NWS Jackson, MS

May 3, 1987Scott County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at May 3, 1987, 5:15 PM CDT for Scott County, Mississippi. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
May 3, 1987, 5:15 PM CDT (22:15 UTC)
Expired
May 3, 1987, 6:00 PM CDT
In force
45 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Scott 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 12:00Z, 10.3 hours before the alert went out and 52 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 12:00Z on 1987-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 716 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 1987-05-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 179 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
716 J/kg
Mixed-layer CIN
-143 J/kg
Mixed-layer LCL
647 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
179 m²/s²
0-3 km storm-relative helicity
314 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 032212
SVRJAN
MSC123-032300-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
515 PM CDT SUN MAY 3 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL  600 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN CENTRAL MISSISSIPPI
          ...SCOTT
 
AT 515 PM JACKSON RADAR WAS DETECTING A SEVERE THUNDERSTORM 10 MILES
SOUTHWEST OF FOREST...MOVING TO THE NORTHEAST AT 15 MILES PER HOUR.
THIS STORM WILL MOVE THROUGH SCOTT COUNTY AND ACROSS OR NEAR FOREST
DURING THE NEXT 45 MINUTES.
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN9.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 2, 8:13 PM CDTSevere Thunderstorm WarningJANJones32 min
May 3, 4:14 PM CDTSevere Thunderstorm WarningJANHinds31 min
May 3, 6:03 PM CDTSevere Thunderstorm WarningJANLauderdale, Newton42 min
May 3, 6:29 PM CDTSevere Thunderstorm WarningJANJefferson Davis46 min
May 3, 6:49 PM CDTSevere Thunderstorm WarningJANMarion41 min

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.