Alert archive / Texas / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 201, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at May 11, 2023, 3:15 AM CDT for Nacogdoches County, San Augustine County, Shelby County, Texas. It was in force for 60 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
- May 11, 2023, 3:15 AM CDT (08:15 UTC)
- Expired
- May 11, 2023, 4:15 AM CDT
- In force
- 60 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Nacogdoches County, TX, San Augustine County, TX, Shelby County, TX
The radar
The Shreveport radar (KSHV), 104 km from the middle of the area, began a volume at 08:20 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 (KSHV), launched 00:00Z, 8.3 hours before the alert went out and 111 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
- 50 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 856 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 122 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 May 11, 1:06 AM CDT, 2 hours 9 minutes earlier.
Area forecast discussion, May 11, 1:06 AM CDT, 2 hours 9 minutes before
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</html>Hazardous weather outlook, May 10, 1:42 PM CDT, 13 hours 33 minutes before
Hazardous Weather Outlook National Weather Service Shreveport LA 142 PM CDT Wed May 10 2023 ARZ050-051-059-LAZ014-019>022-OKZ077-TXZ096-108>111-124-125-136-149- 111845- Sevier-Howard-Little River-Ouachita-Winn-Grant-Caldwell-La Salle- McCurtain-Red River-Franklin-Titus-Camp-Morris-Wood-Upshur-Smith- Cherokee- 142 PM CDT Wed May 10 2023 This Hazardous Weather Outlook is for southwest Arkansas, north central Louisiana, southeast Oklahoma and northeast Texas. .DAY ONE...This afternoon and tonight. Scattered thunderstorms will be possible across the area this afternoon and through the evening hours. An isolated strong to severe storm cannot be ruled out, with damaging winds being the primary threats. Localized flooding from isolated heavy downpours remains possible. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Periods of scattered thunderstorms will continue through the remainder of the work week and into next weekend. The overall threat of severe weather is uncertain, but the potential for an isolated severe thunderstorm during this period cannot be ruled out. Damaging winds and large hail will be the primary threats with any severe storms. Also, with a prolonged period of thunderstorms expected, flooding could become a threat across the region. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. LAZ013-111845- Jackson- 142 PM CDT Wed May 10 2023 ...FLOOD WATCH IN EFFECT THROUGH THURSDAY AFTERNOON... This Hazardous Weather Outlook is for north central Louisiana. .DAY ONE...This afternoon and tonight. Scattered thunderstorms will be possible across the area this afternoon and through the evening hours. An isolated strong to severe storm cannot be ruled out, with damaging winds being the primary threats. Localized flooding from isolated heavy downpours remains possible. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. A Flood Watch will remain in effect through Thursday afternoon. Periods of scattered thunderstorms will continue through the remainder of the work week and into next weekend. The overall threat of severe weather is uncertain, but the potential for an isolated severe thunderstorm during this period cannot be ruled out. Damaging winds and large hail will be the primary threats with any severe storms. Also, with a prolonged period of thunderstorms expected, flooding could become a threat across the region. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. ARZ060-061-070>073-LAZ001>006-010>012-017-018-TXZ097-112-126-137-138- 150>153-165>167-111845- Hempstead-Nevada-Miller-Lafayette-Columbia-Union-Caddo-Bossier- Webster-Claiborne-Lincoln-De Soto-Red River-Bienville-Sabine- Natchitoches-Bowie-Cass-Marion-Gregg-Harrison-Rusk-Panola- Nacogdoches-Shelby-Angelina-San Augustine- 142 PM CDT Wed May 10 2023 ...FLOOD WATCH IN EFFECT THROUGH THURSDAY AFTERNOON... This Hazardous Weather Outlook is for south central Arkansas, southwest Arkansas, north central Louisiana, northwest Louisiana, east Texas and northeast Texas. .DAY ONE...This afternoon and tonight. Scattered thunderstorms will be possible across the area this afternoon and through the evening hours. A Flood Watch is in effect, as moderate to heavy rainfall today could result in flooding across the region. Also, an isolated strong to severe storm will be possible, with damaging winds being the primary threat. However, an isolated tornado cannot be ruled out. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. A Flood Watch will remain in effect through Thursday afternoon. Periods of scattered thunderstorms will continue through the remainder of the work week and into next weekend. The overall threat of severe weather is uncertain, but the potential for an isolated severe thunderstorm during this period cannot be ruled out. Damaging winds and large hail will be the primary threats with any severe storms. Also, with a prolonged period of thunderstorms expected, a flooding threat continues to increase across the region. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. 16
In the hours before
Special weather statement, May 10, 9:19 PM CDT, 5 hours 56 minutes before
Special Weather Statement
National Weather Service Shreveport LA
919 PM CDT Wed May 10 2023
LAZ010-017-110245-
De Soto LA-Sabine LA-
919 PM CDT Wed May 10 2023
...A strong thunderstorm will impact portions of southwestern De Soto
and northwestern Sabine Parishes through 945 PM CDT...
At 918 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles northwest of Converse, or 15 miles southwest of Mansfield,
moving northeast at 25 mph.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Mansfield, South Mansfield, Grand Cane and Stanley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 3175 9384 3177 9382 3180 9384 3181 9387
3184 9388 3186 9389 3187 9388 3188 9390
3190 9390 3189 9392 3189 9393 3191 9392
3191 9394 3215 9385 3203 9357 3173 9379
TIME...MOT...LOC 0218Z 204DEG 22KT 3185 9385
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
24Special weather statement, May 10, 9:21 PM CDT, 5 hours 54 minutes before
Special Weather Statement
National Weather Service Shreveport LA
921 PM CDT Wed May 10 2023
ARZ073-110300-
Union AR-
921 PM CDT Wed May 10 2023
...A strong thunderstorm will impact portions of central Union County
through 1000 PM CDT...
At 920 PM CDT, Doppler radar was tracking a strong thunderstorm near
Lawson, or 9 miles southeast of El Dorado, moving north at 25 mph.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
El Dorado, Calion, Urbana, Lawson, Hillsboro and Pigeon Hill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3305 9250 3309 9265 3337 9264 3336 9260
3337 9259 3337 9255 3333 9252 3332 9252
3333 9250 3332 9249 3333 9248 3332 9246
3331 9247 3330 9246 3329 9247 3327 9244
3328 9238 3330 9236 3329 9236
TIME...MOT...LOC 0220Z 192DEG 20KT 3312 9256
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
24Special weather statement, May 10, 10:53 PM CDT, 4 hours 22 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 10, 8:35 PM CDT | Special Weather Statement | SHV | Shelby | 25 min |
| May 10, 10:53 PM CDT | Special Weather Statement | SHV | Angelina | 37 min |
| May 11, 1:37 AM CDT | Flash Flood Warning | SHV | Cherokee, Nacogdoches, Rusk, San Augustine, Shelby | 5 hr |
| May 11, 2:50 AM CDT | Special Weather Statement | SHV | Nacogdoches | 40 min |
| May 11, 5:10 AM CDT | Severe Thunderstorm Warning | SHV | Nacogdoches, Panola, Rusk, Shelby | 50 min |
| May 11, 5:49 AM CDT | Flash Flood Warning | SHV | Panola, Rusk, Shelby | 6 hr |
| May 11, 6:47 AM CDT | Special Weather Statement | SHV | Panola | 28 min |
| May 11, 6:49 AM CDT | Special Weather Statement | SHV | Panola | 41 min |
| May 11, 7:44 AM CDT | Flash Flood Warning | SHV | Panola, Shelby | 6 hr |
| May 11, 8:17 AM CDT | Areal Flood Warning | SHV | Nacogdoches, Rusk, Shelby | 11 hr |
| May 11, 8:25 AM CDT | Severe Thunderstorm Warning | SHV | Shelby | 65 min |
| May 11, 8:32 AM CDT | River Flood Warning | SHV | Nacogdoches, Rusk, San Augustine, Shelby | 8 days |
| May 11, 8:32 AM CDT | River Flood Warning | SHV | Sabine, San Augustine | 12 hr |
| May 11, 8:33 AM CDT | River Flood Warning | SHV | Nacogdoches, Rusk | 51 hr |
| May 11, 8:46 AM CDT | Flash Flood Warning | SHV | Nacogdoches | 3 hr |
| May 11, 11:46 AM CDT | Areal Flood Warning | SHV | Panola, Rusk, Shelby | 6 hr |
| May 11, 1:39 PM CDT | Areal Flood Warning | SHV | Panola, Shelby | 4 hr |
| May 10, 7:53 PM CDT | Tornado Warning | SHV | Union | 20 min |
| May 10, 9:19 PM CDT | Special Weather Statement | SHV | De Soto | 26 min |
| May 11, 6:01 AM CDT | Areal Flood Advisory | SHV | Bossier, Caddo, De Soto | 17 min |
| May 11, 6:18 AM CDT | Flash Flood Warning | SHV | Bossier, Caddo, De Soto | 6 hr |
| May 11, 6:34 AM CDT | Special Weather Statement | SHV | Caddo | 26 min |
| May 11, 7:30 AM CDT | Areal Flood Advisory | SHV | Claiborne, Webster | 3 hr |
| May 11, 7:34 AM CDT | Areal Flood Advisory | SHV | Bossier, Webster | 3 hr |
| May 11, 7:37 AM CDT | Special Weather Statement | SHV | De Soto | 53 min |
| May 11, 7:54 AM CDT | Tornado Warning | SHV | De Soto | 36 min |
| May 11, 8:03 AM CDT | Tornado Warning | SHV | Grant | 14 min |
| May 11, 8:21 AM CDT | Tornado Warning | SHV | Claiborne, Webster | 24 min |
| May 11, 8:23 AM CDT | Tornado Warning | SHV | Grant, LaSalle | 37 min |
| May 11, 8:51 AM CDT | Tornado Warning | SHV | Grant, LaSalle | 39 min |
| May 11, 8:59 AM CDT | Tornado Warning | SHV | Bienville, Red River | 31 min |
| May 11, 9:05 AM CDT | Special Weather Statement | SHV | Sabine | 40 min |
| May 11, 9:15 AM CDT | Tornado Warning | SHV | De Soto | 20 min |
| May 11, 9:21 AM CDT | Severe Thunderstorm Warning | SHV | Grant, LaSalle | 39 min |
| May 11, 9:22 AM CDT | Severe Thunderstorm Warning | SHV | Caldwell, LaSalle | 68 min |
| May 11, 9:35 AM CDT | Special Weather Statement | SHV | Bienville | 40 min |
| May 11, 9:36 AM CDT | Severe Thunderstorm Warning | SHV | De Soto, Natchitoches, Red River, Sabine | 39 min |
| May 11, 9:43 AM CDT | Special Weather Statement | SHV | Ouachita, Union | 62 min |
| May 11, 9:46 AM CDT | Special Weather Statement | SHV | Union | 59 min |
| May 11, 9:52 AM CDT | Severe Thunderstorm Warning | SHV | Bienville, Jackson, Natchitoches, Winn | 38 min |
| May 11, 10:06 AM CDT | Severe Thunderstorm Warning | SHV | Grant, Natchitoches, Red River, Winn | 54 min |
| May 11, 10:13 AM CDT | Tornado Warning | SHV | LaSalle | 32 min |
| May 11, 10:17 AM CDT | Flash Flood Warning | SHV | De Soto, Natchitoches, Red River, Winn | 3 hr |
| May 11, 10:32 AM CDT | Areal Flood Advisory | SHV | Claiborne, Union | 3 hr |
| May 11, 10:46 AM CDT | Flash Flood Warning | SHV | Claiborne | 6 hr |
| May 11, 10:51 AM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Grant, LaSalle, Winn | 54 min |
| May 11, 10:52 AM CDT | Special Weather Statement | SHV | Union | 38 min |
| May 11, 10:53 AM CDT | Special Weather Statement | SHV | Jackson, Ouachita | 52 min |
| May 11, 11:28 AM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Ouachita, Union | 32 min |
| May 11, 11:46 AM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Grant, LaSalle, Winn | 44 min |
| May 11, 12:00 PM CDT | Flash Flood Warning | SHV | Claiborne, Union | 5 hr |
| May 11, 12:15 PM CDT | Areal Flood Warning | SHV | Bossier, Caddo, De Soto | 3 hr |
| May 11, 12:29 PM CDT | Special Weather Statement | SHV | Jackson, Ouachita | 46 min |
| May 11, 1:05 PM CDT | Special Weather Statement | SHV | Union | 40 min |
| May 11, 1:17 PM CDT | Special Weather Statement | SHV | Ouachita | 43 min |
| May 11, 2:06 PM CDT | Special Weather Statement | SHV | Union | 54 min |
| May 11, 4:20 PM CDT | River Flood Advisory | SHV | Caddo, De Soto | 69 hr |
| May 11, 4:23 PM CDT | River Flood Advisory | SHV | Caddo | 53 hr |
| May 10, 8:50 PM CDT | Special Weather Statement | SHV | Union | 25 min |
| May 10, 9:21 PM CDT | Special Weather Statement | SHV | Union | 39 min |
| May 10, 9:28 PM CDT | Tornado Warning | SHV | Union | 32 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2023Every severe thunderstorm warning in 2023
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.