Alert archive / Louisiana / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 77, NWS Shreveport, LA

April 19, 1992Jackson Parish, Winn Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 19, 1992, 11:16 PM CDT for Jackson Parish, Winn Parish, Louisiana. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
Apr 19, 1992, 11:16 PM CDT (04:16 UTC)
Expired
Apr 20, 1992, 12:15 AM CDT
In force
59 min
Issued by
NWS Shreveport, LA
Area
Whole counties

Counties Jackson Parish, LA, Winn Parish, LA

The nearest sounding before it

Longview/Gregg, TX (KGGG), launched 00:00Z, 4.3 hours before the alert went out and 190 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 00:00Z on 1992-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 711 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 00:00Z on 1992-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 111 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
711 J/kg
Mixed-layer CIN
-81 J/kg
Mixed-layer LCL
1038 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
111 m²/s²
0-3 km storm-relative helicity
204 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.9

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
Apr 19, 7:10 PM CDTSevere Thunderstorm WarningSHVNatchitoches, Sabine65 min
Apr 19, 8:07 PM CDTSevere Thunderstorm WarningSHVWinn68 min
Apr 19, 9:14 PM CDTSevere Thunderstorm WarningSHVCaldwell, Jackson, Winn61 min
Apr 19, 9:56 PM CDTTornado WarningSHVJackson, Ouachita49 min
Apr 19, 10:43 PM CDTTornado WarningSHVMorehouse, Ouachita47 min
Apr 19, 11:16 PM CDTSevere Thunderstorm WarningSHVCaldwell, Ouachita, Richland59 min
Apr 20, 12:19 AM CDTSevere Thunderstorm WarningSHVFranklin, Madison, Tensas56 min
Apr 20, 12:40 AM CDTSevere Thunderstorm WarningSHVEast Carroll, West Carroll50 min
Apr 20, 2:09 AM CDTSevere Thunderstorm WarningSHVNatchitoches, Winn66 min
Apr 20, 4:08 AM CDTSevere Thunderstorm WarningSHVMadison37 min
Apr 19, 8:17 PM CDTSevere Thunderstorm WarningSHVShelby58 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1992Every severe thunderstorm warning in 1992

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.