Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 503, NWS Jackson, MS

October 26, 1997Leake County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Oct 26, 1997, 12:21 AM CDT for Leake County, Mississippi. It was in force for 54 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 26, 1997, 12:21 AM CDT (05:21 UTC)
Expired: Oct 26, 1997, 1:15 AM CDT
In force: 54 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Leake County, MS

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Oct 25, 9:00 PM CDT	Tornado Watch	SPC	6 hr
Oct 26, 12:00 AM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 5.4 hours before the alert went out and 71 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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 260523 RRA
SVRJAN
MSC079-260615-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1221 AM CDT SUN OCT 26 1997
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  115 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN CENTRAL MISSISSIPPI
 
   ...NORTHERN LEAKE COUNTY
 
AT 1221 AM WEATHER SERVICE RADAR INDICATED A POSSIBLE SEVERE
THUNDERSTORM ENTERING NORTHWESTERN LEAKE COUNTY. THE STORM
WILL MOVE EAST NORTHEAST AT 30 MPH...AND WILL MOVE THROUGH THE
THOMASTOWN AREA THROUGH 1240 AM.
 
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.

Issued	Product	Office	Counties	Lasted
Oct 25, 10:02 PM CDT	Severe Thunderstorm Warning	JAN	Washington	58 min
Oct 25, 11:08 PM CDT	Severe Thunderstorm Warning	JAN	Adams	52 min
Oct 25, 11:24 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Leflore	66 min
Oct 25, 11:32 PM CDT	Severe Thunderstorm Warning	JAN	Lawrence	28 min
Oct 25, 11:55 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis	50 min
Oct 25, 11:58 PM CDT	Severe Thunderstorm Warning	JAN	Copiah	47 min
Oct 26, 12:17 AM CDT	Severe Thunderstorm Warning	JAN	Hinds	43 min
Oct 26, 12:39 AM CDT	Severe Thunderstorm Warning	JAN	Rankin	66 min
Oct 26, 1:18 AM CDT	Severe Thunderstorm Warning	JAN	Jasper	42 min
Oct 26, 1:22 AM CDT	Severe Thunderstorm Warning	JAN	Scott, Smith	68 min
Oct 26, 1:54 AM CDT	Severe Thunderstorm Warning	JAN	Newton	51 min
Oct 26, 2:29 AM CST	Severe Thunderstorm Warning	JAN	Jasper, Smith	46 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1997 Every 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.