Alert archive / Texas / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 182, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at May 4, 1991, 9:02 PM CDT for De Soto Parish, Louisiana; Panola County, Shelby County, Texas. It was in force for 58 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
- May 4, 1991, 9:02 PM CDT (02:02 UTC)
- Expired
- May 4, 1991, 10:00 PM CDT
- In force
- 58 min
- Issued by
- NWS Shreveport, LA
- Area
- Whole counties
Counties De Soto Parish, LA, Panola County, TX, Shelby County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 4, 9:55 PM CDT | Hail 1 | De Soto, 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
Lake Charles Mun, LA (KLCH), launched 00:00Z, 2.0 hours before the alert went out and 225 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.
- Mixed-layer CAPE
- 2846 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 641 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 3.9
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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 8:44 PM CDT | Severe Thunderstorm Warning | SHV | Bossier, Caddo | 106 min |
| May 4, 9:41 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Natchitoches, Red River, Sabine | 64 min |
| May 4, 9:41 PM CDT | Severe Thunderstorm Warning | SHV | Claiborne, Webster | 64 min |
| May 4, 10:03 PM CDT | Severe Thunderstorm Warning | SHV | De Soto | 27 min |
| May 4, 10:50 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Lincoln | 55 min |
| May 4, 10:50 PM CDT | Severe Thunderstorm Warning | SHV | Natchitoches, Red River, Sabine | 55 min |
| May 4, 11:47 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Jackson, Lincoln | 58 min |
| May 5, 1:13 AM CDT | Severe Thunderstorm Warning | SHV | East Carroll, Madison, Richland, West Carroll | 62 min |
| May 5, 11:01 AM CDT | Severe Thunderstorm Warning | SHV | Madison | 59 min |
| May 4, 8:04 PM CDT | Severe Thunderstorm Warning | SHV | Panola | 56 min |
| May 4, 8:44 PM CDT | Severe Thunderstorm Warning | SHV | Bowie, Cass | 106 min |
| May 4, 8:44 PM CDT | Severe Thunderstorm Warning | SHV | Harrison, Marion | 106 min |
| May 4, 10:29 PM CDT | Flash Flood Warning | SHV | Bowie, Cass | 3 hr |
| May 4, 8:04 PM CDT | Severe Thunderstorm Warning | SHV | Little River, Sevier | 56 min |
| May 4, 8:04 PM CDT | Severe Thunderstorm Warning | SHV | Miller | 56 min |
| May 4, 8:44 PM CDT | Severe Thunderstorm Warning | SHV | Hempstead, Howard, Pike | 106 min |
| May 4, 10:16 PM CDT | Severe Thunderstorm Warning | SHV | Nevada | 29 min |
| May 4, 10:29 PM CDT | Flash Flood Warning | SHV | Columbia, Lafayette, Nevada | 3 hr |
| May 4, 10:29 PM CDT | Flash Flood Warning | SHV | Hempstead, Howard, Pike | 3 hr |
| May 4, 10:29 PM CDT | Flash Flood Warning | SHV | Little River, Sevier | 3 hr |
Nearby
Severe Thunderstorm Warnings in Texas, 1991Severe Thunderstorm Warnings in Louisiana, 1991Every severe thunderstorm warning 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.