Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 499, NWS Jackson, MS

October 25, 1997Lawrence County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Oct 25, 1997, 11:32 PM CDT for Lawrence County, Mississippi. It was in force for 28 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 25, 1997, 11:32 PM CDT (04:32 UTC)
Expired
Oct 26, 1997, 12:00 AM CDT
In force
28 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Lawrence County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 4.5 hours before the alert went out and 86 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 1997-10-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3555 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 00:00Z on 1997-10-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 255 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
3555 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
525 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
255 m²/s²
0-3 km storm-relative helicity
300 m²/s²
Significant tornado parameter
5.1
Supercell composite
24.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 260433 RRA
SVRJAN
MSC077-260500-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1132 PM CDT (1032 PM CST) SAT OCT 25 1997
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL MIDNIGHT CDT (1100 PM CST)
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL MISSISSIPPI
 
   ...SOUTHERN LAWRENCE COUNTY
 
AT 1132 PM RADAR INDICATED A POSSIBLE SEVERE THUNDERSTORM ENTERING FAR
SOUTHERN LAWRENCE COUNTY...MOVING NORTHEAST AT 30 MPH. OAK VALE IS IN
THE PATH OF 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
Oct 25, 10:02 PM CDTSevere Thunderstorm WarningJANWashington58 min
Oct 25, 11:08 PM CDTSevere Thunderstorm WarningJANAdams52 min
Oct 25, 11:24 PM CDTSevere Thunderstorm WarningJANCarroll, Leflore66 min
Oct 25, 11:55 PM CDTSevere Thunderstorm WarningJANJefferson Davis50 min
Oct 25, 11:58 PM CDTSevere Thunderstorm WarningJANCopiah47 min
Oct 26, 12:17 AM CDTSevere Thunderstorm WarningJANHinds43 min
Oct 26, 12:21 AM CDTSevere Thunderstorm WarningJANLeake54 min
Oct 26, 12:39 AM CDTSevere Thunderstorm WarningJANRankin66 min
Oct 26, 1:18 AM CDTSevere Thunderstorm WarningJANJasper42 min
Oct 26, 1:22 AM CDTSevere Thunderstorm WarningJANScott, Smith68 min
Oct 26, 1:54 AM CDTSevere Thunderstorm WarningJANNewton51 min
Oct 26, 2:29 AM CSTSevere Thunderstorm WarningJANJasper, Smith46 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.