Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 479, NWS Jackson, MS

October 24, 1997Lamar County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Oct 24, 1997, 4:31 PM CDT for Lamar County, Mississippi. It was in force for 29 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
Oct 24, 1997, 4:31 PM CDT (21:31 UTC)
Expired
Oct 24, 1997, 5:00 PM CDT
In force
29 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, 9.5 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 1997-10-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 610 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 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 1997-10-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 square meters per square second.193958Sfc1 km3 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
610 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
587 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
110 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.5

Open this sounding in Storm Lab

The text

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

378 
WUUS1 KJAN 242133 RRA
SVRJAN
MSC073-242200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
431 PM CDT FRI OCT 24 1997
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  500 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST MISSISSIPPI
 
   ...LAMAR COUNTY
 
AT 431 PM WEATHER SERVICE RADAR SHOWED A SEVERE THUNDERSTORM CENTERED
ABOUT 3 MILES NORTHEAST OF BAXTERVILLE...MOVING EAST AT 25 MPH. THE
STORM WILL AFFECT THE PURVIS AREA 445 PM.  HAIL UP TO AN INCH IN
DIAMETER AND STRONG WINDS ARE 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.
<
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The office that day

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

IssuedProductOfficeCountiesLasted
Oct 23, 11:27 PM CDTSevere Thunderstorm WarningJANAdams33 min
Oct 23, 11:53 PM CDTTornado WarningJANAdams, Jefferson37 min
Oct 24, 12:21 AM CDTSevere Thunderstorm WarningJANYazoo39 min
Oct 24, 12:23 AM CDTTornado WarningJANClaiborne, Jefferson37 min
Oct 24, 12:37 AM CDTTornado WarningJANCopiah53 min
Oct 24, 12:59 AM CDTSevere Thunderstorm WarningJANClaiborne, Warren31 min
Oct 24, 1:05 AM CDTTornado WarningJANHinds, Madison25 min
Oct 24, 1:14 AM CDTSevere Thunderstorm WarningJANAttala31 min
Oct 24, 1:29 AM CDTTornado WarningJANMadison31 min
Oct 24, 1:32 AM CDTSevere Thunderstorm WarningJANClaiborne, Hinds28 min
Oct 24, 1:46 AM CDTSevere Thunderstorm WarningJANJefferson29 min
Oct 24, 1:57 AM CDTTornado WarningJANRankin33 min
Oct 24, 2:03 AM CDTSevere Thunderstorm WarningJANMadison27 min
Oct 24, 2:08 AM CDTSevere Thunderstorm WarningJANKemper52 min
Oct 24, 4:34 PM CDTSevere Thunderstorm WarningJANForrest26 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.