Alert archive / Louisiana / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 13, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at Feb 19, 1991, 2:30 AM CST for De Soto Parish, Louisiana. It was in force for 60 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
- Feb 19, 1991, 2:30 AM CST (08:30 UTC)
- Expired
- Feb 19, 1991, 3:30 AM CST
- In force
- 60 min
- Issued by
- NWS Shreveport, LA
- Area
- Whole counties
County De Soto Parish, LA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 19, 3:20 AM CST | Thunderstorm Wind 0 | 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
Longview/Gregg, TX (KGGG), launched 00:00Z, 8.5 hours before the alert went out and 88 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
- 766 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 566 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 252 m²/s²
- 0-3 km storm-relative helicity
- 268 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Feb 18, 10:52 PM CST, 3 hours 38 minutes before
OKZ040-021-034-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001- 002-003-004-005-006-190700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 1045 PM CST MON FEB 18 1991 ...TORNADO WATCH IN EFFECT FOR ALL OF NORTH LOUISIANA...MUCH OF EAST TEXAS AND PARTS OF SOUTH ARKANSAS...UNTIL 4 AM CST TUESDAY... ...SEVERE THUNDERSTORMS WARNINGS ARE NO LONGER IN EFFECT FOR CLAIBORNE AND BIENVILLE PARISHES IN NORTH LOUISIANA AND BOWIE COUNTY TEXAS... ...HOWEVER A LINE OF THUNDERSTORMS WAS DEVELOPING FROM SOUTHWEST ARKANSAS NEAR GLENWOOD TO NEAR TYLER TEXAS AND ON TO JUST EAST OF WACO AND TO NEAR COLLEGE STATION. SEVERE THUNDERSTORMS ARE LOCATED NEAR 30 MILES SOUTHWEST OF TYLER TEXAS. ADDITIONAL SEVERE STORMS WILL DEVELOP PRIOR TO MID- NIGHT AND SPREAD ACROSS NORTHEAST TEXAS AND NORTH LOUISIANA AND SOUTHWEST ARKANSAS DURING THE MIDNIGHT HOURS. RAIN AND SHOWERS WITH ISOLATED THUNDERSTORMS CONTINUE OVER SOUTHEAST ARKANSAS AND NORTH CENTRAL LOUISIANA BUT CONTINUE TO DECREASE IN COVERAGE AND IN STRENGTH. BESIDES THE THREAT OF SEVERE STORMS SPREADING FROM WEST TO EAST TONIGHT ...ADDITIONAL HEAVY RAINFALL IS LIKELY TONIGHT WITH A FLASH FLOOD WATCH IN EFFECT FOR MUCH OF THE ARKLATEX EXPECIALLY THE SOUTHEAST HALF. GENERAL RAINFALL OF ONE TO TWO INCHES HAS OCCURRED ALREADY WITH ISOLATED AMOUNTS OF NEAR THREE INCHES WHICH RESULTED IN SOME LOW AREA FLOODING. MANY SMALL STREAMS ARE RUNNING NEAR BANKFULL AS A RESULT OF THISs HEAVY RAINFALL. ADDITIONAL RAINFALL TONIGHT MAY CAUSE FLOODING IN LOW AREAS AND SMALL STREAMS THAT MAY EFFECT SOME ROADWAYS.
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 18, 9:08 PM CST | Severe Thunderstorm Warning | SHV | Bienville, Claiborne | 82 min |
| Feb 19, 1:33 AM CST | Severe Thunderstorm Warning | SHV | Bossier, Caddo | 87 min |
| Feb 19, 1:45 AM CST | Flash Flood Warning | SHV | Bienville, Lincoln, Union | 4 hr |
| Feb 19, 1:45 AM CST | Flash Flood Warning | SHV | De Soto, Red River | 4 hr |
| Feb 19, 3:06 AM CST | Severe Thunderstorm Warning | SHV | Sabine | 69 min |
| Feb 19, 3:32 AM CST | Severe Thunderstorm Warning | SHV | De Soto, Natchitoches, Red River | 88 min |
| Feb 19, 4:09 AM CST | Severe Thunderstorm Warning | SHV | Winn | 81 min |
| Feb 19, 5:25 AM CST | Severe Thunderstorm Warning | SHV | Caldwell, Franklin, Richland | 65 min |
| Feb 19, 5:25 AM CST | Severe Thunderstorm Warning | SHV | West Carroll | 65 min |
| Feb 19, 6:03 AM CST | Flash Flood Warning | SHV | Winn | 3 hr |
| Feb 19, 6:03 AM CST | Flash Flood Warning | SHV | Bienville, Lincoln, Union | 3 hr |
| Feb 19, 6:03 AM CST | Flash Flood Warning | SHV | Caldwell, Franklin | 3 hr |
| Feb 18, 8:41 PM CST | Severe Thunderstorm Warning | SHV | Bowie, Cass | 79 min |
| Feb 18, 11:48 PM CST | Severe Thunderstorm Warning | SHV | Gregg | 87 min |
| Feb 19, 12:14 AM CST | Severe Thunderstorm Warning | SHV | Cass | 61 min |
| Feb 19, 12:43 AM CST | Severe Thunderstorm Warning | SHV | Harrison, Marion | 77 min |
| Feb 19, 12:43 AM CST | Severe Thunderstorm Warning | SHV | Lafayette, Miller | 77 min |
| Feb 19, 12:55 AM CST | Tornado Warning | SHV | Lafayette | 65 min |
Nearby
Severe 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.