Alert archive / Louisiana / Tornado Warnings in 1997

Tornado Warning 5, NWS Shreveport, LA

February 26, 1997Grant Parish, Winn Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at Feb 26, 1997, 6:48 PM CST for Grant Parish, Winn Parish, Louisiana. It was in force for 42 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: Feb 26, 1997, 6:48 PM CST (00:48 UTC)
Expired: Feb 26, 1997, 7:30 PM CST
In force: 42 min
Issued by: NWS Shreveport, LA
Area: Whole counties

Counties Grant Parish, LA, Winn Parish, LA

The radar

The Ft Polk radar (KPOE), 77 km from the middle of the area, began a volume at 00:49 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 watch it was issued in

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

Issued	Product	Office	Lasted
Feb 26, 2:45 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 0.8 hours before the alert went out and 134 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: 516 m above ground
0-6 km bulk shear: 72 kt
0-1 km storm-relative helicity: -261 m²/s²
0-3 km storm-relative helicity: -140 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSHV 270047 RRA
TORSHV
LAC043-127-270130-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
648 PM CST WED FEB 26 1997
 
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  730 PM CST
FOR THE FOLLOWING AREAS...
 
IN NORTH LOUISIANA
 
   ...NORTHERN GRANT PARISH
 
IN NORTHWEST LOUISIANA
 
   ...SOUTHERN WINN PARISH
 
AT 647 PM CST DOPPLER RADAR IN SHREVEPORT INDICATED A TORNADO
DEVELOPING OVER NORTHERN GRANT PARISH NORTH OF DRY PRONG ALONG
HIGHWAY 167. THIS TORNADO WILL MOVE INTO SOUTHERN WINN
PARISH SOUTHEAST OF WINNFIELD.
 
MOVEMENT WAS TO THE NORTHEAST AT 45 MPH.
 
 
IF YOU ARE CAUGHT OUTSIDE...HURRY TO A NEARBY REINFORCED BUILDING.
AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW SPOT.
 
IF YOU ARE IN A MOBILE HOME...GO TO A STORM SHELTER IF AVAILABLE.
IF A STORM SHELTER IS NOT AVAILABLE...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
Feb 26, 6:03 PM CST	Severe Thunderstorm Warning	SHV	Natchitoches	42 min
Feb 26, 6:41 PM CST	Severe Thunderstorm Warning	SHV	Grant, Winn	49 min
Feb 26, 7:10 PM CST	Severe Thunderstorm Warning	SHV	Caldwell	35 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.