Alert archive / Mississippi / Tornado Warnings in 1991

Tornado Warning 21, NWS Jackson, MS

April 28, 1991Copiah County, Mississippi

NWS Jackson, MS issued this tornado warning at Apr 28, 1991, 3:35 PM CDT for Copiah County, Mississippi. It was in force for 10 min.

The area

The counties it named.

The facts

Issued
Apr 28, 1991, 3:35 PM CDT (20:35 UTC)
Expired
Apr 28, 1991, 3:45 PM CDT
In force
10 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Copiah County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 8.6 hours before the alert went out and 61 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 1991-04-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1442 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 1991-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 187 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
1442 J/kg
Mixed-layer CIN
-97 J/kg
Mixed-layer LCL
718 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
187 m²/s²
0-3 km storm-relative helicity
202 m²/s²
Significant tornado parameter
0.8
Supercell composite
7.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 282036
TORJAN
MSC029-049-282115-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
335 PM CDT SUN APR 28 1991
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  415 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL MISSISSIPPI
 
   ...COPIAH COUNTY...HINDS COUNTY
 
AT 330PM THE SEVERE THUNDERSTORM WITH A POSSIBLE TORNADO WAS
ABOUT 10 MILES WEST OF CRYSTAL SPRINGS MOVING NORTH NORTHEAST
AT 30 MPH. THIS TRACK WILL TAKE THE STORM INTO SOUTHERN HINDS
COUNTY JUST WEST OF MORGANS STORE AND TOWARD RAYMOND DURING THE
NEXT 45 MINUTES.  THIS IS A DANGEROUS STORM AND YOU SHOULD TAKE
COVER.
 
DO NOT USE YOUR CAR TO TRY TO OYUTRUN A TORNADO.  IF YOU ARE IN THE
PATH OF A TORNADO...LEAVE THE CAR AND GO TO A STRONG BUILDING.  IF
NO STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT.
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 9:29 PM CDTSevere Thunderstorm WarningJANSunflower, Washington46 min
Apr 27, 10:01 PM CDTSevere Thunderstorm WarningJANLeflore, Tallahatchie44 min
Apr 27, 10:21 PM CDTSevere Thunderstorm WarningJANHumphreys54 min
Apr 27, 10:42 PM CDTSevere Thunderstorm WarningJANIssaquena, Sharkey48 min
Apr 27, 10:47 PM CDTSevere Thunderstorm WarningJANHolmes43 min
Apr 27, 11:07 PM CDTSevere Thunderstorm WarningJANAttala53 min
Apr 27, 11:25 PM CDTSevere Thunderstorm WarningJANHumphreys, Yazoo35 min
Apr 27, 11:45 PM CDTTornado WarningJANGrenada30 min
Apr 27, 11:49 PM CDTSevere Thunderstorm WarningJANWinston56 min
Apr 28, 12:01 AM CDTSevere Thunderstorm WarningJANChoctaw, Webster29 min
Apr 28, 3:11 AM CDTSevere Thunderstorm WarningJANBolivar49 min
Apr 28, 3:30 AM CDTSevere Thunderstorm WarningJANAdams, Jefferson30 min
Apr 28, 4:11 AM CDTSevere Thunderstorm WarningJANBolivar, Washington64 min
Apr 28, 5:08 AM CDTSevere Thunderstorm WarningJANSunflower52 min
Apr 28, 5:16 AM CDTFlash Flood WarningJANBolivar, Washington3 hr
Apr 28, 6:49 AM CDTSevere Thunderstorm WarningJANCarroll, Grenada41 min
Apr 28, 6:56 AM CDTSevere Thunderstorm WarningJANHolmes34 min
Apr 28, 7:12 AM CDTSevere Thunderstorm WarningJANAttala, Montgomery48 min
Apr 28, 7:47 AM CDTSevere Thunderstorm WarningJANCalhoun, Choctaw, Webster43 min
Apr 28, 7:52 AM CDTSevere Thunderstorm WarningJANWinston68 min
Apr 28, 8:01 AM CDTSevere Thunderstorm WarningJANYazoo44 min
Apr 28, 8:10 AM CDTSevere Thunderstorm WarningJANNeshoba65 min
Apr 28, 8:55 AM CDTSevere Thunderstorm WarningJANNoxubee65 min
Apr 28, 8:58 AM CDTSevere Thunderstorm WarningJANWinston32 min
Apr 28, 9:36 AM CDTFlash Flood WarningJANHinds, Warren3 hr
Apr 28, 10:00 AM CDTSevere Thunderstorm WarningJANNeshoba30 min
Apr 28, 10:32 AM CDTSevere Thunderstorm WarningJANKemper, Lauderdale43 min
Apr 28, 10:32 AM CDTSevere Thunderstorm WarningJANNoxubee43 min
Apr 28, 12:00 PM CDTFlash Flood WarningJANHinds60 min
Apr 28, 12:38 PM CDTSevere Thunderstorm WarningJANLeake, Scott52 min
Apr 28, 12:58 PM CDTSevere Thunderstorm WarningJANLauderdale47 min
Apr 28, 1:12 PM CDTSevere Thunderstorm WarningJANNeshoba63 min
Apr 28, 1:38 PM CDTSevere Thunderstorm WarningJANYazoo52 min
Apr 28, 1:46 PM CDTSevere Thunderstorm WarningJANIssaquena, Sharkey44 min
Apr 28, 1:46 PM CDTSevere Thunderstorm WarningJANLauderdale44 min
Apr 28, 2:06 PM CDTSevere Thunderstorm WarningJANNewton39 min
Apr 28, 2:17 PM CDTTornado WarningJANLauderdale43 min
Apr 28, 2:31 PM CDTSevere Thunderstorm WarningJANCopiah, Lincoln44 min
Apr 28, 2:50 PM CDTTornado WarningJANCopiah40 min
Apr 28, 3:10 PM CDTSevere Thunderstorm WarningJANLawrence50 min
Apr 28, 3:22 PM CDTSevere Thunderstorm WarningJANSimpson53 min
Apr 28, 3:35 PM CDTTornado WarningJANHinds40 min
Apr 28, 3:38 PM CDTSevere Thunderstorm WarningJANAttala52 min
Apr 28, 3:56 PM CDTSevere Thunderstorm WarningJANCarroll, Montgomery49 min
Apr 28, 4:35 PM CDTSevere Thunderstorm WarningJANAdams, Jefferson50 min
Apr 28, 4:43 PM CDTSevere Thunderstorm WarningJANPike32 min
Apr 28, 5:15 PM CDTSevere Thunderstorm WarningJANCarroll, Montgomery45 min
Apr 28, 5:15 PM CDTSevere Thunderstorm WarningJANWebster45 min
Apr 28, 5:19 PM CDTSevere Thunderstorm WarningJANClaiborne26 min
Apr 28, 5:25 PM CDTSevere Thunderstorm WarningJANLeflore35 min
Apr 28, 5:36 PM CDTSevere Thunderstorm WarningJANWarren39 min
Apr 28, 5:40 PM CDTSevere Thunderstorm WarningJANBolivar, Sunflower, Washington50 min
Apr 28, 5:46 PM CDTSevere Thunderstorm WarningJANHinds44 min
Apr 28, 5:56 PM CDTSevere Thunderstorm WarningJANNewton49 min
Apr 28, 6:01 PM CDTSevere Thunderstorm WarningJANWilkinson44 min
Apr 28, 6:11 PM CDTSevere Thunderstorm WarningJANGrenada, Leflore, Tallahatchie49 min
Apr 28, 6:20 PM CDTTornado WarningJANNeshoba25 min
Apr 28, 6:27 PM CDTSevere Thunderstorm WarningJANAmite48 min
Apr 28, 6:44 PM CDTFlash Flood WarningJANBolivar, Sunflower, Washington2 hr

Nearby

Tornado Warnings in Mississippi, 1991Every tornado warning in 1991Tornadoes in 1991

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.