Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 86, NWS Jackson, MS

February 21, 1997Winston County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Feb 21, 1997, 4:30 AM CST for Winston County, Mississippi. It was in force for 45 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Feb 21, 1997, 4:30 AM CST (10:30 UTC)
Expired: Feb 21, 1997, 5:15 AM CST
In force: 45 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Winston County, MS

What was reported inside it

Time	Report	Where	Remark
Feb 21, 4:40 AM CST	Thunderstorm Wind	Louisville, MS

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 10.5 hours before the alert went out and 130 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1491 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 156 m²/s²
0-3 km storm-relative helicity: 316 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 211031 RRA
SVRJAN
MSC159-211115-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
430 AM CST FRI FEB 21 1997
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  515 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL MISSISSIPPI
 
   ...WINSTON COUNTY
 
AT 430 AM RADAR INDICATED A SEVERE THUNDERSTORM JUST ENTERING SOUTHWEST
WINSTON COUNTY 10 MILES WEST OF NOXAPATER MOVING NORTHEAST AT 50 MPH.
THIS STORM WILL MOVE THROUGH LOUISVILLE AND NOXAPATER BY 5 AM.
 
 
A TORNADO WATCH IS ALSO IN EFFECT.  REMEMBER SEVERE THUNDERSTORMS
CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.  REMAINZ
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
Feb 21, 1:34 AM CST	Severe Thunderstorm Warning	JAN	Adams	41 min
Feb 21, 1:55 AM CST	Severe Thunderstorm Warning	JAN	Franklin, Jefferson	65 min
Feb 21, 2:01 AM CST	Severe Thunderstorm Warning	JAN	Claiborne	59 min
Feb 21, 2:05 AM CST	Severe Thunderstorm Warning	JAN	Sunflower	40 min
Feb 21, 2:13 AM CST	Severe Thunderstorm Warning	JAN	Warren	47 min
Feb 21, 2:29 AM CST	Severe Thunderstorm Warning	JAN	Copiah, Hinds	61 min
Feb 21, 2:34 AM CST	Severe Thunderstorm Warning	JAN	Lincoln	56 min
Feb 21, 2:48 AM CST	Severe Thunderstorm Warning	JAN	Madison, Yazoo	57 min
Feb 21, 3:03 AM CST	Severe Thunderstorm Warning	JAN	Rankin, Simpson	42 min
Feb 21, 3:08 AM CST	Severe Thunderstorm Warning	JAN	Holmes	52 min
Feb 21, 3:21 AM CST	Severe Thunderstorm Warning	JAN	Carroll	54 min
Feb 21, 3:34 AM CST	Severe Thunderstorm Warning	JAN	Scott	56 min
Feb 21, 3:46 AM CST	Tornado Warning	JAN	Scott	44 min
Feb 21, 3:55 AM CST	Severe Thunderstorm Warning	JAN	Attala, Leake, Montgomery	65 min
Feb 21, 4:05 AM CST	Tornado Warning	JAN	Leake	40 min
Feb 21, 4:14 AM CST	Severe Thunderstorm Warning	JAN	Choctaw, Webster	46 min
Feb 21, 4:17 AM CST	Severe Thunderstorm Warning	JAN	Smith	43 min
Feb 21, 4:20 AM CST	Tornado Warning	JAN	Neshoba	40 min
Feb 21, 4:34 AM CST	Severe Thunderstorm Warning	JAN	Newton	41 min
Feb 21, 4:52 AM CST	Severe Thunderstorm Warning	JAN	Oktibbeha	38 min
Feb 21, 4:57 AM CST	Severe Thunderstorm Warning	JAN	Kemper, Noxubee	48 min
Feb 21, 5:29 AM CST	Severe Thunderstorm Warning	JAN	Jefferson Davis	31 min
Feb 21, 5:38 AM CST	Severe Thunderstorm Warning	JAN	Marion	52 min
Feb 21, 5:43 AM CST	Severe Thunderstorm Warning	JAN	Covington, Smith	47 min
Feb 21, 6:12 AM CST	Severe Thunderstorm Warning	JAN	Jasper	48 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.