Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 264, NWS Jackson, MS

May 9, 1997Choctaw County, Webster County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at May 9, 1997, 6:55 AM CDT for Choctaw County, Webster County, Mississippi. It was in force for 50 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: May 9, 1997, 6:55 AM CDT (11:55 UTC)
Expired: May 9, 1997, 7:45 AM CDT
In force: 50 min
Issued by: NWS Jackson, MS
Area: Whole counties

Counties Choctaw County, MS, Webster County, MS

What was reported inside it

Time	Report	Where	Remark
May 9, 7:30 AM CDT	Thunderstorm Wind	Ackerman, MS	Several trees were blown down on to power ines.

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, 11.9 hours before the alert went out and 150 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: 105 J/kg
Mixed-layer CIN: -205 J/kg
Mixed-layer LCL: 1566 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 80 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

897 
WUUS1 KJAN 091200
SVRJAN
MSC019-155-091245-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED
NATIONAL WEATHER SERVICE JACKSON MS
655 AM CDT FRI MAY 9 1997
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  745 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL MISSISSIPPI
 
   ...CHOCTAW COUNTY
 
IN NORTH CENTRAL MISSISSIPPI
 
   ...WEBSTER COUNTY
 
AT 655 AM DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS OVER
EASTERN MONTGOMERY COUNTY. THIS LINE OF STORMS WAS MOVING EAST AT 40 MPH
AND WILL MOVE ACROSS WEBSTER AND CHOCTAW COUNTIES THROUGH 745 AM. SOME
TOWNS IN THE PATH OF THE STORMS INCLUDE EUPORA...BELLEFONTAINE...AND
REFORM.
 
THESE STORMS HAVE A HISTORY OF PRODUCING DAMAGING WINDS. TREES WERE
REPORTED DOWN 4 MILES SOUTHEAST OF CARROLLTON AT 625 AM.
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH...PREPARE FOR
WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...AND DEADLY LIGHTNING.
PEOPLE OUTSIDE SHOULD SEEK SHELTER INSIDE A STRONG BUILDING.
<
69
 
&

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 4:18 AM CDT	Severe Thunderstorm Warning	JAN	Bolivar	57 min
May 9, 5:09 AM CDT	Severe Thunderstorm Warning	JAN	Sunflower	51 min
May 9, 5:43 AM CDT	Severe Thunderstorm Warning	JAN	Leflore	47 min
May 9, 5:59 AM CDT	Severe Thunderstorm Warning	JAN	Carroll	46 min
May 9, 6:26 AM CDT	Severe Thunderstorm Warning	JAN	Montgomery	49 min
May 9, 7:26 AM CDT	Severe Thunderstorm Warning	JAN	Oktibbeha	49 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.