Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 498, NWS Jackson, MS

October 25, 1997Carroll County, Leflore County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Oct 25, 1997, 11:24 PM CDT for Carroll County, Leflore County, Mississippi. It was in force for 66 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, 11:24 PM CDT (04:24 UTC)
Expired
Oct 26, 1997, 12:30 AM CDT
In force
66 min
Issued by
NWS Jackson, MS
Area
Whole counties

Counties Carroll County, MS, Leflore County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 4.4 hours before the alert went out and 131 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 260426 RRA
SVRJAN
MSC015-083-260530-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1124 PM CDT (1024 PM CST) SAT OCT 25 1997
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1230 AM CDT (1130 PM CST)
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL MISSISSIPPI
 
   ...CARROLL COUNTY
 
IN NORTH CENTRAL MISSISSIPPI
 
   ...EASTERN LEFLORE COUNTY
 
AT 1124 PM WEATHER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS OVER
EASTERN LEFLORE COUNTY IN THE VICINITY OF GREENWOOD...MOVING EAST AT
30 MPH.  DOWNED TREES WERE REPORTED IN THE MORGAN CITY AREA.  DAMAGING
WINDS REMAIN LIKELY WITH THESE STORMS.
 
 
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, 11:32 PM CDTSevere Thunderstorm WarningJANLawrence28 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.