Alert archive / Louisiana / Tornado Warnings in 1991

Tornado Warning 16, NWS Shreveport, LA

November 19, 1991Caddo Parish, Louisiana; Harrison County, Texas

NWS Shreveport, LA issued this tornado warning at Nov 19, 1991, 1:56 PM CST for Caddo Parish, Louisiana; Harrison County, Texas. It was in force for 94 min. 3 reports 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 19, 1991, 1:56 PM CST (19:56 UTC)
Expired
Nov 19, 1991, 3:30 PM CST
In force
94 min
Issued by
NWS Shreveport, LA
Area
Whole counties

Counties Caddo Parish, LA, Harrison County, TX

What was reported inside it

TimeReportWhereRemark
Nov 19, 2:20 PM CSTThunderstorm Wind 61Harrison, TX
Nov 19, 2:31 PM CSTThunderstorm Wind 0Caddo, LA
Nov 19, 2:47 PM CSTThunderstorm Wind 50Caddo, LA

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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Longview/Gregg, TX (KGGG), launched 12:00Z, 7.9 hours before the alert went out and 50 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, Longview/Gregg, TX at 12:00Z on 1991-11-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1241 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, Longview/Gregg, TX at 12:00Z on 1991-11-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 169 square meters per square second.1939587897Sfc1 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
1241 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
556 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
169 m²/s²
0-3 km storm-relative helicity
171 m²/s²
Significant tornado parameter
1.1
Supercell composite
5.9

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 19, 2:37 PM CSTTornado WarningSHVBossier53 min
Nov 19, 12:54 PM CSTTornado WarningSHVGregg, Harrison66 min
Nov 19, 1:30 PM CSTSevere Thunderstorm WarningSHVHarrison90 min
Nov 19, 2:57 PM CSTTornado WarningSHVPanola, Rusk93 min
Nov 19, 1:30 PM CSTSevere Thunderstorm WarningSHVHoward, Pike90 min
Nov 19, 3:03 PM CSTSevere Thunderstorm WarningSHVColumbia, Lafayette57 min
Nov 19, 3:54 PM CSTSevere Thunderstorm WarningSHVNevada66 min

Nearby

Tornado Warnings in Louisiana, 1991Tornado Warnings in Texas, 1991Every tornado warning in 1991Tornadoes in 1991

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.