Alert archive / Texas / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 133, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at Apr 18, 2019, 4:23 AM CDT for 4 counties in Texas; 4 parishes in Louisiana. It was in force for 67 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 18, 2019, 4:23 AM CDT (09:23 UTC)
- Expired
- Apr 18, 2019, 5:30 AM CDT
- In force
- 67 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 70.0 mph
Counties Bossier Parish, LA, Caddo Parish, LA, De Soto Parish, LA, Red River Parish, LA, Harrison County, TX, Nacogdoches County, TX, Panola County, TX, Shelby County, TX
The radar
The Shreveport radar (KSHV), 33 km from the middle of the area, began a volume at 09:26 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 18, 1:09 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 9.4 hours before the alert went out and 243 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
- 553 J/kg
- Mixed-layer CIN
- -209 J/kg
- Mixed-layer LCL
- 597 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 195 m²/s²
- 0-3 km storm-relative helicity
- 210 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.2
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.
NWS Shreveport, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 18, 3:25 AM CDT, 58 minutes earlier.
Area forecast discussion, Apr 18, 3:25 AM CDT, 58 minutes before
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</html>Hazardous weather outlook, Apr 17, 11:56 AM CDT, 16 hours 27 minutes before
Hazardous Weather Outlook National Weather Service Shreveport LA 1156 AM CDT Wed Apr 17 2019 ARZ050-051-059-060-070-OKZ077-TXZ096-097-108>112-124-125-136-149- 165>167-181700- Sevier-Howard-Little River-Hempstead-Miller-McCurtain-Red River- Bowie-Franklin-Titus-Camp-Morris-Cass-Wood-Upshur-Smith-Cherokee- Angelina-San Augustine-Sabine- 1156 AM CDT Wed Apr 17 2019 This Hazardous Weather Outlook is for portions of southwest Arkansas, southeast Oklahoma, east Texas, and northeast Texas. .DAY ONE...This Afternoon and Tonight... Strong to severe thunderstorms remain possible during tonight and into Thursday morning. Large hail, damaging winds, and even a tornado or two remain possible. Locally heavy rainfall may lead to isolated flash flooding. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday... Strong to severe thunderstorms will continue into Thursday. Large hail, damaging winds, and a tornado or two will be possible. In addition, locally heavy rainfall may lead to isolated flash flooding. The severe weather threat should end from west to east by Thursday afternoon. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed tonight and into Thursday. ARZ061-071>073-LAZ001>006-010>014-TXZ126-137-138-150>153-181700- Nevada-Lafayette-Columbia-Union-Caddo-Bossier-Webster-Claiborne- Lincoln-De Soto-Red River-Bienville-Jackson-Ouachita-Marion-Gregg- Harrison-Rusk-Panola-Nacogdoches-Shelby- 1156 AM CDT Wed Apr 17 2019 This Hazardous Weather Outlook is for portions of south central Arkansas, southwest Arkansas, north central Louisiana, northwest Louisiana, east Texas, and northeast Texas. .DAY ONE...This Afternoon and Tonight... A Flash Flood Watch is in effect 7 PM CDT this Wednesday evening until 7 PM CDT Thursday evening. Strong to severe thunderstorms are possible tonight and into Thursday. Large hail, damaging winds, and a tornado or two remain possible. Locally heavy rainfall may lead to flash flooding, especially where soils remain very wet from recent heavy rains in southern Arkansas and northern Louisiana. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday... A Flash Flood Watch is in effect 7 PM CDT this Wednesday evening until 7 PM CDT Thursday evening. Strong to severe thunderstorms will continue into Thursday. Large hail, damaging winds, and a tornado or two remain possible. In addition, locally heavy rainfall may lead to flash flooding, especially where soils remain very wet from recent heavy rains in southern Arkansas and northern Louisiana. The severe weather threat should end from west to east during Thursday afternoon. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed tonight and into Thursday. LAZ017>022-181700- Sabine-Natchitoches-Winn-Grant-Caldwell-La Salle- 1156 AM CDT Wed Apr 17 2019 This Hazardous Weather Outlook is for portions of north central Louisiana and northwest Louisiana. .DAY ONE...This Afternoon and Tonight... Strong to severe thunderstorms are possible late tonight and more likely during the daytime hours of Thursday. Large hail, damaging winds, and a tornado or two will be possible. Locally heavy rainfall may lead to isolated flash flooding. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday... Strong to severe thunderstorms are possible during the daytime hours of Thursday. Large hail, damaging winds, and a tornado or two remain possible. In addition, locally heavy rainfall may lead to isolated flash flooding. The severe weather threat should end from west to east by late Thursday afternoon or early Thursday evening. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed by Thursday morning.
In the hours before
Special weather statement, Apr 18, 2:04 AM CDT, 2 hours 19 minutes before
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</html>Local storm report, Apr 18, 4:01 AM CDT, 22 minutes before
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</html>Local storm report, Apr 18, 4:17 AM CDT, 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
417 AM CDT THU APR 18 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0341 AM TSTM WND DMG HENDERSON 32.15N 94.80W
04/18/2019 RUSK TX LAW ENFORCEMENT
TREES AND POWER LINES DOWN IN THE CITY OF
HENDERSON.
&&
ABDThe office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 17, 10:49 PM CDT | Special Weather Statement | SHV | Red River | 41 min |
| Apr 17, 11:19 PM CDT | Severe Thunderstorm Warning | SHV | Bowie, Red River | 41 min |
| Apr 18, 1:58 AM CDT | Lake Wind Advisory | SHV | Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more | 17 hr |
| Apr 18, 2:37 AM CDT | Severe Thunderstorm Warning | SHV | Cherokee, Nacogdoches, Rusk, Smith | 53 min |
| Apr 18, 2:41 AM CDT | Special Weather Statement | SHV | Smith | 64 min |
| Apr 18, 3:25 AM CDT | Severe Thunderstorm Warning | SHV | Angelina, Nacogdoches | 65 min |
| Apr 18, 3:30 AM CDT | Severe Thunderstorm Warning | SHV | Cherokee, Harrison, Nacogdoches, Panola, Rusk, Shelby | 60 min |
| Apr 18, 3:35 AM CDT | Special Weather Statement | SHV | Gregg, Harrison, Upshur | 40 min |
| Apr 18, 4:35 AM CDT | Special Weather Statement | SHV | Angelina, San Augustine, Shelby | 40 min |
| Apr 18, 6:08 AM CDT | Special Weather Statement | SHV | Sabine | 52 min |
| Apr 18, 10:00 AM CDT | River Flood Warning | SHV | Angelina, Houston, Polk, Trinity, Tyler | 49 days |
| Apr 18, 10:03 AM CDT | River Flood Warning | SHV | Franklin, Morris, Red River, Titus | 70 hr |
| Apr 18, 10:04 AM CDT | River Flood Warning | SHV | Gregg, Smith, Upshur, Wood | 55 days |
| Apr 18, 10:06 AM CDT | River Flood Warning | SHV | Wood | 70 hr |
| Apr 18, 5:27 AM CDT | Special Weather Statement | SHV | Webster | 48 min |
| Apr 18, 6:47 AM CDT | Severe Thunderstorm Warning | SHV | De Soto, Natchitoches, Red River, Sabine | 43 min |
| Apr 18, 7:28 AM CDT | Severe Thunderstorm Warning | SHV | Bienville, Jackson, Natchitoches, Red River, Winn | 29 min |
| Apr 18, 8:17 AM CDT | Tornado Warning | SHV | Grant, Natchitoches | 29 min |
| Apr 18, 8:46 AM CDT | Severe Thunderstorm Warning | SHV | Grant, Natchitoches, Winn | 44 min |
| Apr 18, 9:28 AM CDT | Severe Thunderstorm Warning | SHV | Grant, Natchitoches, Winn | 62 min |
| Apr 18, 10:19 AM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Jackson, Ouachita, Winn | 37 min |
| Apr 18, 4:46 PM CDT | Special Weather Statement | SHV | Bossier | 44 min |
| Apr 17, 10:54 PM CDT | Special Weather Statement | SHV | Sevier | 51 min |
| Apr 17, 11:03 PM CDT | Severe Thunderstorm Warning | SHV | Howard, Sevier | 42 min |
| Apr 18, 12:00 AM CDT | Special Weather Statement | SHV | Sevier | 45 min |
| Apr 18, 12:48 AM CDT | Special Weather Statement | SHV | Nevada | 42 min |
| Apr 18, 1:06 AM CDT | Severe Thunderstorm Warning | SHV | Nevada | 24 min |
| Apr 18, 1:12 AM CDT | Special Weather Statement | SHV | Nevada | 33 min |
| Apr 18, 2:04 AM CDT | Special Weather Statement | SHV | Nevada | 41 min |
| Apr 18, 3:46 AM CDT | Special Weather Statement | SHV | Lafayette, Miller | 44 min |
| Apr 18, 4:28 AM CDT | Special Weather Statement | SHV | Columbia, Lafayette, Nevada | 32 min |
| Apr 18, 4:46 AM CDT | Flash Flood Warning | SHV | Hempstead, Nevada | 3 hr |
| Apr 18, 5:19 AM CDT | Special Weather Statement | SHV | Union | 41 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2019Severe Thunderstorm Warnings in Louisiana, 2019Every severe thunderstorm warning in 2019
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; radar from the NEXRAD Level II archive.