Alert archive / Louisiana / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 155, NWS Shreveport, LA

May 9, 1993Bienville Parish, Bossier Parish, Webster Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at May 9, 1993, 9:33 PM CDT for Bienville Parish, Bossier Parish, Webster Parish, Louisiana. It was in force for 87 min.

The area

The counties it named.

The facts

Issued
May 9, 1993, 9:33 PM CDT (02:33 UTC)
Expired
May 9, 1993, 11:00 PM CDT
In force
87 min
Issued by
NWS Shreveport, LA
Area
Whole counties

Counties Bienville Parish, LA, Bossier Parish, LA, Webster Parish, LA

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 2.6 hours before the alert went out and 274 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, Lake Charles Mun, LA at 00:00Z on 1993-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2027 joules per kilogram.LCLEL10008507005003002001001 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, Lake Charles Mun, LA at 00:00Z on 1993-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -22 square meters per square second.1939Sfc1 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
2027 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
818 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
-22 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.7

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
May 9, 7:58 PM CDTSevere Thunderstorm WarningSHVBossier, Caddo92 min
May 9, 8:51 PM CDTSevere Thunderstorm WarningSHVDe Soto, Red River69 min
May 9, 10:02 PM CDTSevere Thunderstorm WarningSHVClaiborne58 min
May 9, 10:50 PM CDTSevere Thunderstorm WarningSHVUnion55 min
May 9, 7:26 PM CDTSevere Thunderstorm WarningSHVLafayette79 min
May 9, 7:26 PM CDTSevere Thunderstorm WarningSHVPike79 min
May 9, 7:48 PM CDTSevere Thunderstorm WarningSHVColumbia, Nevada87 min
May 9, 7:10 PM CDTSevere Thunderstorm WarningSHVBowie, Cass95 min
May 9, 7:10 PM CDTSevere Thunderstorm WarningSHVHarrison, Marion95 min
May 9, 7:10 PM CDTSevere Thunderstorm WarningSHVPanola95 min
May 9, 7:10 PM CDTSevere Thunderstorm WarningSHVGregg95 min
May 9, 7:48 PM CDTSevere Thunderstorm WarningSHVShelby87 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1993Every severe thunderstorm warning in 1993

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.