Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 161, NWS Jackson, MS

April 21, 1997Webster County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Apr 21, 1997, 7:04 PM CDT for Webster County, Mississippi. It was in force for 41 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 21, 1997, 7:04 PM CDT (00:04 UTC)
Expired
Apr 21, 1997, 7:45 PM CDT
In force
41 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Webster County, MS

What was reported inside it

TimeReportWhereRemark
Apr 21, 7:25 PM CDTHail 1.75Mantee, MS

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 0.1 hours before the alert went out and 148 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 00:00Z on 1997-04-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 650 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, Little Rock, AR at 00:00Z on 1997-04-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 193 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
650 J/kg
Mixed-layer CIN
-150 J/kg
Mixed-layer LCL
1227 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
193 m²/s²
0-3 km storm-relative helicity
283 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 220005 RRA
SVRJAN
MSC155-220045-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
704 PM CDT MON APR 21 1997
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  745 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL MISSISSIPPI
 
   ...EASTERN WEBSTER COUNTY
 
AT 704 PM RADAR INDICATED A SEVERE THUNDERSTORM 9 MILES NORTHEAST OF
BELLEFONTAINE MOVING SOUTHEAST AT 30 MPH. THIS MOTION WILL TAKE THE
STORM ACROSS NORTHEAST WEBSTER COUNTY AND ACROSS THE NATCHEZ TRACE BY
730 PM.
 
SEVERE THUNDERSTORMS PRODUCE WIND IN EXCESS OF 55 MPH...LARGE
HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.  MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.
<

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 21, 7:41 PM CDTSevere Thunderstorm WarningJANOktibbeha64 min
Apr 22, 10:39 AM CDTSevere Thunderstorm WarningJANIssaquena51 min
Apr 22, 10:51 AM CDTSevere Thunderstorm WarningJANSharkey, Washington39 min
Apr 22, 11:10 AM CDTSevere Thunderstorm WarningJANClaiborne50 min
Apr 22, 11:12 AM CDTSevere Thunderstorm WarningJANYazoo48 min
Apr 22, 11:32 AM CDTTornado WarningJANHolmes, Yazoo43 min
Apr 22, 12:08 PM CDTSevere Thunderstorm WarningJANRankin52 min
Apr 22, 12:32 PM CDTSevere Thunderstorm WarningJANScott43 min
Apr 22, 12:56 PM CDTSevere Thunderstorm WarningJANNewton34 min
Apr 22, 1:35 PM CDTSevere Thunderstorm WarningJANSmith40 min
Apr 22, 2:40 PM CDTSevere Thunderstorm WarningJANClaiborne50 min
Apr 22, 2:52 PM CDTSevere Thunderstorm WarningJANCopiah53 min
Apr 22, 3:57 PM CDTSevere Thunderstorm WarningJANClarke48 min
Apr 22, 4:01 PM CDTSevere Thunderstorm WarningJANJefferson Davis, Lawrence44 min
Apr 22, 4:11 PM CDTSevere Thunderstorm WarningJANJasper, Smith49 min
Apr 22, 4:18 PM CDTSevere Thunderstorm WarningJANCovington, Simpson27 min
Apr 22, 4:26 PM CDTTornado WarningJANClarke34 min
Apr 22, 4:33 PM CDTSevere Thunderstorm WarningJANLauderdale42 min
Apr 22, 4:57 PM CDTTornado WarningJANJones48 min
Apr 22, 5:04 PM CDTSevere Thunderstorm WarningJANLawrence41 min
Apr 22, 5:24 PM CDTSevere Thunderstorm WarningJANJefferson Davis, Marion66 min
Apr 22, 5:45 PM CDTSevere Thunderstorm WarningJANLamar60 min
Apr 22, 5:54 PM CDTSevere Thunderstorm WarningJANForrest36 min
Apr 22, 6:27 PM CDTSevere Thunderstorm WarningJANMarion33 min
Apr 22, 6:44 PM CDTSevere Thunderstorm WarningJANLamar46 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1997Every severe thunderstorm warning in 1997

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.