Alert archive / Louisiana / Tornado Warnings in 1997

Tornado Warning 36, NWS Shreveport, LA

November 28, 1997Red River Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at Nov 28, 1997, 5:09 PM CST for Red River Parish, Louisiana. It was in force for 36 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: Nov 28, 1997, 5:09 PM CST (23:09 UTC)
Expired: Nov 28, 1997, 5:45 PM CST
In force: 36 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County Red River Parish, LA

The radar

The Shreveport radar (KSHV), 62 km from the middle of the area, began a volume at 23:10 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
Nov 28, 5:15 PM CST	Tornado F0	Coushatta, LA	Damage path consisted of snapped tree limbs, trees pushed over, and trees topped. No structures were in the damage path.

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

Shreveport, LA (KSHV), launched 12:00Z, 11.2 hours before the alert went out and 58 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: 524 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 318 m²/s²
0-3 km storm-relative helicity: 367 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 KSHV 282310 RRA
TORSHV
LAC081-282345-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
509 PM CST FRI NOV 28 1997
 
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  545 PM CST
FOR THE FOLLOWING AREA...
 
IN NORTHWEST LOUISIANA
 
   ...NORTHERN RED RIVER PARISH
 
AT 510 PM CST RADAR INDICATED A DEVELOPING TORNADO NEAR CROSSROADS
MOVING NORTHEAST AT 40 MPH.
 
IF YOU ARE CAUGHT IN YOU2R CAR IN THE PATH OF A TORNADO...LEAVE THE
CAR AND GO TO A STRONG BUILDING. IF NO STRUCTURE IS NEARBY...SEEK
SHELTER IN A DITCH OR LOW SPOT.

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 28, 5:25 PM CST	Tornado Warning	SHV	Bienville	50 min

Nearby

Tornado Warnings in Louisiana, 1997 Every tornado warning in 1997 Tornadoes 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.