Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 63, NWS Jackson, MS

February 20, 1997Morehouse Parish, Louisiana

NWS Jackson, MS issued this severe thunderstorm warning at Feb 20, 1997, 11:26 PM CST for Morehouse Parish, Louisiana. It was in force for 49 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 20, 1997, 11:26 PM CST (05:26 UTC)
Expired
Feb 21, 1997, 12:15 AM CST
In force
49 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Morehouse Parish, LA

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 5.4 hours before the alert went out and 171 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.

641 
WUUS1 KJAN 210528 RRA
SVRJAN
LAC067-210615-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1126 PM CST THU FEB 20 1997
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1215 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST LOUISIANA
 
   ...MOREHOUSE PARISH
 
AT 1126 PM...DOPPLER RADAR SHOWED A SEVERE THUNDERSTORM 10 MILES WEST OF
BASTROP...JUST ENTERING MOREHOUSE PARISH. THE STORM WAS MOVING NORTH
NOTHEAST NEAR 50 MPH...AND WILL AFFECT BASTROP AND BEEKMAN BY 1150 PM.
DAMAGING WINDS ARE LIKELY WITH THIS STORM.
 
 
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 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, 12:43 AM CSTSevere Thunderstorm WarningJANWest Carroll47 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.