Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 367, NWS Jackson, MS

June 20, 1997Oktibbeha County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jun 20, 1997, 9:52 PM CDT for Oktibbeha County, Mississippi. It was in force for 53 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: Jun 20, 1997, 9:52 PM CDT (02:52 UTC)
Expired: Jun 20, 1997, 10:45 PM CDT
In force: 53 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Oktibbeha County, MS

The radar

The Columbus AFB radar (KGWX), 73 km from the middle of the area, began a volume at 02:53 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 2.9 hours before the alert went out and 166 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: 2015 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 1512 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 34 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.

390 
WUUS1 KJAN 210254 RRA
SVRJAN
MSC105-210345-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
952 PM CDT FRI JUN 20 1997
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1045 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL MISSISSIPPI
 
   ...WESTERN OKTIBBEHA COUNTY
 
AT 950 PM CDT DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM JUST NORTH
OF STURGIS MOVING SOUTHEAST NEAR 15 MPH. THIS STORM WILL MOVE ACROSS
HIGHWAY 25 IN WESTERN OKTIBBEHA COUNTY BY 1015 PM.
 
SEVERE THUNDERSTORMS PRODUCE WIND IN EXCESS OF 55 MPH...LARGE
HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.  MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.
<
 
 
71

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 7:03 PM CDT	Severe Thunderstorm Warning	JAN	Lauderdale	57 min
Jun 20, 7:15 PM CDT	Tornado Warning	JAN	Clarke	45 min
Jun 20, 8:01 PM CDT	Severe Thunderstorm Warning	JAN	Noxubee	44 min
Jun 20, 8:09 PM CDT	Severe Thunderstorm Warning	JAN	Kemper	51 min
Jun 20, 8:23 PM CDT	Severe Thunderstorm Warning	JAN	Lauderdale	52 min
Jun 20, 9:07 PM CDT	Flash Flood Warning	JAN	Kemper, Lauderdale	3 hr
Jun 20, 10:17 PM CDT	Severe Thunderstorm Warning	JAN	Choctaw	28 min
Jun 20, 10:42 PM CDT	Severe Thunderstorm Warning	JAN	Choctaw, Oktibbeha	48 min
Jun 20, 11:37 PM CDT	Flash Flood Warning	JAN	Choctaw, Oktibbeha, Winston	2 hr
Jun 21, 1:45 AM CDT	Flash Flood Warning	JAN	Choctaw	3 hr
Jun 21, 6:16 PM CDT	Severe Thunderstorm Warning	JAN	Kemper	44 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; radar from the NEXRAD Level II archive.