Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 67, NWS Jackson, MS

February 21, 1997West Carroll Parish, Louisiana

NWS Jackson, MS issued this severe thunderstorm warning at Feb 21, 1997, 12:43 AM CST for West Carroll Parish, Louisiana. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Feb 21, 1997, 12:43 AM CST (06:43 UTC)
Expired
Feb 21, 1997, 1:30 AM CST
In force
47 min
Issued by
NWS Jackson, MS
Area
Whole counties

County West Carroll Parish, LA

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Feb 20, 11:45 PM CSTTornado WatchSPC5 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 6.7 hours before the alert went out and 139 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 1997-02-21Temperature 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, Jackson, MS at 00:00Z on 1997-02-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 156 square meters per square second.1939587897Sfc1 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
1491 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
156 m²/s²
0-3 km storm-relative helicity
316 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 KJAN 210645 RRA
SVRJAN
LAC123-210730-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1243 AM CST FRI FEB 21 1997
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  130 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST LOUISIANA
 
   ...WEST CARROLL PARISH
 
AT 1240 AM DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS OVER
EASTERN MOREHOUSE PARISH BETWEEN GALION AND MER ROUGE. THESE STORMS WERE
MOVING NORTH NORTHEAST AT 50 MPH...AND WILL MOVE THROUGH WEST CARROLL
PARISH INCLUDING THE TOWNS OF OAK GROVE AND GOODWILL THROUGH
130 AM.
 
DAMAGING WINDS ARE LIKELY WITH THESE STORMS.
 
A TORNADO WATCH IS ALSO IN EFFECT.  REMEMBER SEVERE THUNDERSTORMS
CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.  REMAIN
CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.
<
68

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 20, 11:26 PM CSTSevere Thunderstorm WarningJANMorehouse49 min
Feb 21, 12:03 AM CSTSevere Thunderstorm WarningJANRichland42 min
Feb 21, 12:15 AM CSTSevere Thunderstorm WarningJANMorehouse45 min
Feb 21, 12:25 AM CSTSevere Thunderstorm WarningJANFranklin65 min
Feb 21, 12:46 AM CSTSevere Thunderstorm WarningJANCatahoula44 min
Feb 21, 12:52 AM CSTSevere Thunderstorm WarningJANRichland68 min
Feb 21, 1:12 AM CSTSevere Thunderstorm WarningJANConcordia48 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 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; the sounding from the Mesonet's radiosonde archive.