Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 348, NWS Jackson, MS

June 12, 1997Catahoula Parish, Louisiana

NWS Jackson, MS issued this severe thunderstorm warning at Jun 12, 1997, 5:46 PM CDT for Catahoula Parish, Louisiana. It was in force for 44 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
Jun 12, 1997, 5:46 PM CDT (22:46 UTC)
Expired
Jun 12, 1997, 6:30 PM CDT
In force
44 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Catahoula Parish, LA

The radar

The Ft Polk radar (KPOE), 121 km from the middle of the area, began a volume at 22:49 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 10.8 hours before the alert went out and 182 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 1997-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 954 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 1997-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 square meters per square second.193958Sfc1 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
954 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
491 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
107 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 122248 RRA
SVRJAN
LAC025-122330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
546 PM CDT THU JUN 12 1997
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  630 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST LOUISIANA
 
   ...CATAHOULA PARISH
 
AT 545 PM DOPPLER RADAR IN JACKSON INDICATED A SEVERE THUNDERSTORM ABOUT
5 MILES WEST OF AIMWELL. THE STORM WAS MOVING TO THE SOUTHEAST AT 15
MPH.
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH...PREPARE FOR
WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...AND DEADLY LIGHTNING.
PEOPLE OUTSIDE SHOULD SEEK SHELTER INSIDE A STRONG BUILDING.
<
 
72

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; radar from the NEXRAD Level II archive.