Alert archive / Arkansas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 62, NWS Jackson, MS

February 20, 1997Ashley County, Arkansas

NWS Jackson, MS issued this severe thunderstorm warning at Feb 20, 1997, 11:09 PM CST for Ashley County, Arkansas. It was in force for 51 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 20, 1997, 11:09 PM CST (05:09 UTC)
Expired: Feb 21, 1997, 12:00 AM CST
In force: 51 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Ashley County, AR

The radar

The Little Rock radar (KLZK), 189 km from the middle of the area, began a volume at 05:12 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.

What was reported inside it

Time	Report	Where	Remark
Feb 20, 11:30 PM CST	Thunderstorm Wind	Hamburg, AR

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 watch it was issued in

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

Issued	Product	Office	Lasted
Feb 20, 6:00 PM CST	Tornado Watch	SPC	6 hr
Feb 20, 11:00 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 5.2 hours before the alert went out and 185 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 210510 RRA
SVRJAN
ARC003-210600-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1109 PM CST THU FEB 20 1997
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL MIDNIGHT CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST ARKANSAS
 
   ...ASHLEY COUNTY
 
AT 1107 PM DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS
APPROACHING WESTERN ASHLEY COUNTY APPROXIMATELY 15 MILES WEST OF
HAMBURG. THE STORMS WERE MOVING NORTH NORTHEAST AT 50 MPH...AND WILL BE
MOVING THROUGH OLD MILO...FOUNTAIN HILL...AND CROSSETT BY 1130 PM.
 
THESE STORMS HAVE A HISTORY OF PRODUCING WIND DAMAGE...AND WIND GUSTS IN
EXCESS OF 65 MPH ARE POSSIBLE 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.
<
68p

Nearby

Severe Thunderstorm Warnings in Arkansas, 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; radar from the NEXRAD Level II archive.