Alert archive / Louisiana / Tornado Warnings in 1997

Tornado Warning 13, NWS Shreveport, LA

April 22, 1997Claiborne Parish, Lincoln Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at Apr 22, 1997, 8:01 AM CDT for Claiborne Parish, Lincoln Parish, Louisiana. It was in force for 44 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
Apr 22, 1997, 8:01 AM CDT (13:01 UTC)
Expired
Apr 22, 1997, 8:45 AM CDT
In force
44 min
Issued by
NWS Shreveport, LA
Area
Whole counties

Counties Claiborne Parish, LA, Lincoln Parish, LA

The radar

The Shreveport radar (KSHV), 99 km from the middle of the area, began a volume at 13:02 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

TimeReportWhereRemark
Apr 22, 8:07 AM CDTThunderstorm Wind 60Homer, LASeveral trees toppled across a major roadway blocking all traffic in town until the roads were cleared.

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.

IssuedProductOfficeLasted
Apr 22, 5:00 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 1.0 hours before the alert went out and 90 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-pSkew-T log-p diagram, Shreveport, LA at 12:00Z on 1997-04-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1457 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Shreveport, LA at 12:00Z on 1997-04-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1457 J/kg
Mixed-layer CIN
-79 J/kg
Mixed-layer LCL
519 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
331 m²/s²
Significant tornado parameter
2.0
Supercell composite
16.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSHV 221302 RRA
TORSHV
LAC027-061-221345-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
801 AM CDT TUE APR 22 1997
 
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  845 AM CDT
FOR THE FOLLOWING AREAS...
 
IN NORTHWEST LOUISIANA
 
   ...SOUTHERN CLAIBORNE PARISH...NORTHERN LINCOLN PARISH
 
AT 756 AM CDT...RADAR INDICATED A POSSIBLE TORNADO NEAR HURRICANE IN
SOUTHERN CLAIBORNE PARIzSH MOVING EAST AT 35 MPH. THIS POSSIBLE TORNADO
WILL MOVE INTO NORTHERN LINCOLN PARISH BY 815 AM.
 
IF YOU ARE IN THE PATH OF THIS TORNADO...GO TO AN INTERIOR HALLWAY
...CLOSET...OR BATHROOM ON THE LOWEST FLOOR. AVOID WINDOWS.
3

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 21, 11:40 PM CDTSevere Thunderstorm WarningSHVCaddo65 min
Apr 22, 2:12 AM CDTSevere Thunderstorm WarningSHVCaddo63 min
Apr 22, 2:56 AM CDTSevere Thunderstorm WarningSHVBossier49 min
Apr 22, 3:33 AM CDTSevere Thunderstorm WarningSHVCaddo, De Soto57 min
Apr 22, 4:07 AM CDTSevere Thunderstorm WarningSHVBossier68 min
Apr 22, 5:31 AM CDTSevere Thunderstorm WarningSHVWebster59 min
Apr 22, 5:41 AM CDTSevere Thunderstorm WarningSHVCaddo64 min
Apr 22, 5:58 AM CDTSevere Thunderstorm WarningSHVBossier62 min
Apr 22, 6:43 AM CDTFlash Flood WarningSHVBossier, Caddo3 hr
Apr 22, 6:49 AM CDTSevere Thunderstorm WarningSHVBossier, Caddo56 min
Apr 22, 7:13 AM CDTSevere Thunderstorm WarningSHVWebster62 min
Apr 22, 7:29 AM CDTSevere Thunderstorm WarningSHVClaiborne61 min
Apr 22, 7:35 AM CDTSevere Thunderstorm WarningSHVBossier, Caddo55 min
Apr 22, 8:12 AM CDTSevere Thunderstorm WarningSHVDe Soto33 min
Apr 22, 8:15 AM CDTSevere Thunderstorm WarningSHVBienville, Webster45 min
Apr 22, 8:15 AM CDTSevere Thunderstorm WarningSHVRed River45 min
Apr 22, 8:44 AM CDTTornado WarningSHVLincoln31 min
Apr 22, 8:47 AM CDTSevere Thunderstorm WarningSHVClaiborne43 min
Apr 22, 8:58 AM CDTSevere Thunderstorm WarningSHVBienville, Jackson, Lincoln62 min
Apr 22, 8:58 AM CDTSevere Thunderstorm WarningSHVUnion62 min
Apr 22, 9:00 AM CDTSevere Thunderstorm WarningSHVNatchitoches, Winn60 min
Apr 22, 9:17 AM CDTSevere Thunderstorm WarningSHVOuachita58 min
Apr 22, 9:30 AM CDTSevere Thunderstorm WarningSHVCaldwell60 min

Nearby

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