Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 128, NWS Jackson, MS

March 29, 1997Lamar County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Mar 29, 1997, 5:05 PM CST for Lamar County, Mississippi. It was in force for 25 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
Mar 29, 1997, 5:05 PM CST (23:05 UTC)
Expired
Mar 29, 1997, 5:30 PM CST
In force
25 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Lamar County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 11.1 hours before the alert went out and 108 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, Slidell Radar S, LA at 12:00Z on 1997-03-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2387 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, Slidell Radar S, LA at 12:00Z on 1997-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 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
2387 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
526 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
112 m²/s²
Significant tornado parameter
0.9
Supercell composite
4.8

Open this sounding in Storm Lab

The text

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

618 
WUUS1 KJAN 292306 RRA
SVRJAN
MSC073-292330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
505 PM CST SAT MAR 29 1997
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  530 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST MISSISSIPPI
 
   ...SOUTHEASTERN LAMAR COUNTY
 
AT 505 PM WEATHER SERVICE RADAR DETECTED A SEVERE THUNDERSTORM 5 MILES
SOUTHWEST OF PURVIS MOVING SOUTHEAST AT 20 MPH. THIS STORM WILL MOVE
OVER INTERSTATE 59 OVER FAR SOUTHEAST LAMAR COUNTY BY 515 PM.  THIS
STORM PRODUCED GOLFBALL SIZE HAIL JUST SOUTHWEST OF PURVIS AT 5 PM.
GOLFBALL HAIL REMAINS LIKELY WITH THIS STORM.
 
 
PEOPLE NEAR THE STORM SHOULD MOVE INSIDE A STRONG BUILDING AWAY
FROM WINDOWS.  DONT USE TELEPHONES OR ELECTRICAL APPLIANCES UNTIL
THE STORM HAS PASSED.  MOTORISTS DONT DRIVE INTO WATER CROSSINGS.
<
 
 
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 29, 3:52 PM CSTSevere Thunderstorm WarningJANMarion53 min
Mar 29, 5:30 PM CSTSevere Thunderstorm WarningJANMarion45 min
Mar 29, 5:50 PM CSTSevere Thunderstorm WarningJANForrest40 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; the sounding from the Mesonet's radiosonde archive.