Alert archive / Texas / Flash Flood Warnings in 2019
Flash Flood Warning 20, NWS Shreveport, LA
NWS Shreveport, LA issued this flash flood warning at May 8, 2019, 11:59 PM CDT for 9 counties in Texas; Bossier Parish, Caddo Parish, Louisiana. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 8, 2019, 11:59 PM CDT (04:59 UTC)
- Expired
- May 9, 2019, 5:00 AM CDT
- In force
- 5 hr
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bossier Parish, LA, Caddo Parish, LA, Cass County, TX, Cherokee County, TX, Gregg County, TX, Harrison County, TX, Marion County, TX, Nacogdoches County, TX, Panola County, TX, Rusk County, TX, Shelby County, TX
The radar
The Shreveport radar (KSHV), 54 km from the middle of the area, began a volume at 05:03 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 nearest sounding before it
Shreveport, LA (KBAD), launched 00:00Z, 5.0 hours before the alert went out and 63 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1331 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 407 m²/s²
- 0-3 km storm-relative helicity
- 530 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at May 8, 9:48 PM CDT, 2 hours 11 minutes earlier.
Area forecast discussion, May 8, 9:48 PM CDT, 2 hours 11 minutes before
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</html>Hazardous weather outlook, May 8, 7:33 PM CDT, 4 hours 26 minutes before
Hazardous Weather Outlook National Weather Service Shreveport LA 733 PM CDT Wed May 8 2019 ARZ050-051-059>061-070>073-LAZ001>006-010>014-OKZ077-TXZ096-097- 108>112-124>126-136>138-149>153-091100- Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette- Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto- Red River-Bienville-Jackson-Ouachita-McCurtain-Bowie-Franklin- Titus-Camp-Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison- Cherokee-Rusk-Panola-Nacogdoches-Shelby- 733 PM CDT Wed May 8 2019 This Hazardous Weather Outlook is for portions of south central Arkansas, southwest Arkansas, north central Louisiana, northwest Louisiana, southeast Oklahoma, east Texas and northeast Texas. .DAY ONE...Tonight... A Flash Flood Watch is in effect until 7 AM CDT Thursday morning. Strong to severe thunderstorms will remain possible through the overnight hours. These storms may produce damaging winds, large hail, isolated tornadoes, and flash flooding. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday... Thunderstorms will continue through Thursday as a cold front moves across the area, and a few storms could be severe. A brief reprieve from heavy rainfall will come late Thursday, but heavy rainfall will return Friday through Sunday. Flash flooding will be possible during this timeframe, and additional Flash Flood Watches will likely be needed. .SPOTTER INFORMATION STATEMENT... Activation of emergency management personnel, amateur radio operators and storm spotters may be needed tonight through midday Thursday. LAZ017>022-TXZ165>167-091100- Sabine-Natchitoches-Winn-Grant-Caldwell-La Salle-Angelina- San Augustine- 733 PM CDT Wed May 8 2019 This Hazardous Weather Outlook is for portions of north central Louisiana, northwest Louisiana and east Texas. .DAY ONE...Tonight... Strong to severe thunderstorms will remain possible through the overnight hours. These storms may produce damaging winds, large hail, isolated tornadoes, and isolated flash flooding. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday... Thunderstorms will continue through Thursday as a cold front moves across the area, and a few storms could be severe. A brief reprieve from heavy rainfall will come late Thursday, but heavy rainfall will return Friday through Sunday. Flash flooding will be possible during this timeframe, and additional Flash Flood Watches will likely be needed. .SPOTTER INFORMATION STATEMENT... Activation of emergency management personnel, amateur radio operators and storm spotters may be needed tonight through midday Thursday. 09
In the hours before
Local storm report, May 8, 9:00 PM CDT, 2 hours 59 minutes before
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</html>Local storm report, May 8, 9:32 PM CDT, 2 hours 27 minutes before
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</html>Local storm report, May 8, 9:35 PM CDT, 2 hours 24 minutes before
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</html>Local storm report, May 8, 9:39 PM CDT, 2 hours 20 minutes before
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</html>Local storm report, May 8, 9:41 PM CDT, 2 hours 18 minutes before
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</html>Local storm report, May 8, 9:51 PM CDT, 2 hours 8 minutes before
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</html>The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 11:49 PM CDT | Areal Flood Advisory | SHV | Gregg, Harrison, Marion, Panola, Rusk, Shelby | 3 hr |
| May 9, 12:03 AM CDT | Flash Flood Warning | SHV | Bowie, Cass | 5 hr |
| May 9, 1:22 AM CDT | Special Weather Statement | SHV | Sabine, San Augustine | 53 min |
| May 9, 3:28 AM CDT | Areal Flood Advisory | SHV | Sabine, San Augustine, Shelby | 2 hr |
| May 9, 3:39 AM CDT | Severe Thunderstorm Warning | SHV | Sabine | 66 min |
| May 9, 4:18 AM CDT | Areal Flood Advisory | SHV | Sabine | 117 min |
| May 9, 4:28 AM CDT | Flash Flood Watch | SHV | Angelina, Cherokee, Gregg, Harrison, Marion, Nacogdoches and 8 more | 63 hr |
| May 9, 4:34 AM CDT | Flash Flood Warning | SHV | Sabine | 4 hr |
| May 9, 4:52 AM CDT | Special Weather Statement | SHV | Sabine | 38 min |
| May 9, 6:14 AM CDT | River Flood Warning | SHV | Nacogdoches, Rusk | 50 hr |
| May 9, 5:34 PM CDT | Severe Thunderstorm Warning | SHV | Angelina, Sabine, San Augustine | 56 min |
| May 8, 7:02 PM CDT | Flash Flood Warning | SHV | Grant, LaSalle | 3 hr |
| May 9, 12:29 AM CDT | Special Weather Statement | SHV | Bossier, Caddo | 61 min |
| May 9, 1:13 AM CDT | Areal Flood Advisory | SHV | Jackson, Ouachita | 2 hr |
| May 9, 3:08 AM CDT | Special Weather Statement | SHV | Sabine | 52 min |
| May 9, 4:42 AM CDT | Severe Thunderstorm Warning | SHV | Jackson, Natchitoches, Red River, Winn | 63 min |
| May 9, 5:19 AM CDT | Tornado Warning | SHV | Sabine | 26 min |
| May 9, 5:45 AM CDT | Tornado Warning | SHV | Natchitoches, Sabine | 45 min |
| May 9, 5:48 AM CDT | Special Weather Statement | SHV | Caldwell | 42 min |
| May 9, 6:26 AM CDT | Tornado Warning | SHV | Natchitoches | 29 min |
| May 9, 7:00 AM CDT | Special Weather Statement | SHV | Grant, LaSalle | 60 min |
| May 9, 10:09 AM CDT | River Flood Warning | SHV | Bienville, Bossier, Red River, Webster | 13 days |
| May 9, 10:50 AM CDT | River Flood Warning | SHV | Claiborne, Lincoln, Union | 47 hr |
| May 9, 11:55 AM CDT | River Flood Warning | SHV | Caddo | 4 days |
Nearby
Flash Flood Warnings in Texas, 2019Flash Flood Warnings in Louisiana, 2019Every flash flood 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.