Alert archive / Texas / Flash Flood Warnings in 2023

Flash Flood Warning 22, NWS Shreveport, LA

May 11, 2023Panola County, Rusk County, Shelby County, Texas

NWS Shreveport, LA issued this flash flood warning at May 11, 2023, 5:49 AM CDT for Panola County, Rusk County, Shelby County, Texas. It was in force for 6 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 11, 2023, 5:49 AM CDT (10:49 UTC)
Expired: May 11, 2023, 12:00 PM CDT
In force: 6 hr
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Flood severity: None

Counties Panola County, TX, Rusk County, TX, Shelby County, TX

The radar

The Shreveport radar (KSHV), 71 km from the middle of the area, began a volume at 10:53 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, 10.8 hours before the alert went out and 80 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

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

Open this sounding in Storm Lab

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 11, 4:10 AM CDT, 1 hour 39 minutes earlier.

Area forecast discussion, May 11, 4:10 AM CDT, 1 hour 39 minutes before

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Hazardous weather outlook, May 11, 5:00 AM CDT, 49 minutes before

Hazardous Weather Outlook
National Weather Service Shreveport LA
500 AM CDT Thu May 11 2023

ARZ050-051-059-OKZ077-TXZ096-108>111-124-125-136-149-121000-
Sevier-Howard-Little River-McCurtain-Red River-Franklin-Titus-Camp-
Morris-Wood-Upshur-Smith-Cherokee-
500 AM CDT Thu May 11 2023

This Hazardous Weather Outlook is for southwest Arkansas, southeast
Oklahoma and northeast Texas.

.DAY ONE...Today and tonight.

Scattered thunderstorms will be possible across the area today. 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...Friday through Wednesday.

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 possibly large hail, will be the primary threats with any
severe storms. Also, with a prolonged period of thunderstorms
expected, a flooding threat will remain across the region.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

LAZ013-014-019>022-121000-
Jackson-Ouachita-Winn-Grant-Caldwell-La Salle-
500 AM CDT Thu May 11 2023

This Hazardous Weather Outlook is for north central Louisiana.

.DAY ONE...Today and tonight.

Scattered thunderstorms will be possible across the area today. 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...Friday through Wednesday.

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 possibly large hail, will be the primary threats with any
severe storms. Also, with a prolonged period of thunderstorms
expected, a flooding threat will remain 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>167-121000-
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-
500 AM CDT Thu May 11 2023

This Hazardous Weather Outlook is for south central Arkansas,
southwest Arkansas, north central Louisiana, northwest Louisiana,
east Texas and northeast Texas.

...FLOOD WATCH IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON...

.DAY ONE...Today and tonight.

Scattered thunderstorms will be possible across the area today. A
Flood Watch remains in effect, as moderate to heavy rainfall could
result in flooding across the region. Also, an isolated strong to
severe storm will be possible, with damaging winds being the primary
threat.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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 possibly large hail, will be the primary threats with any
severe storms. Also, with a prolonged period of thunderstorms
expected, a flooding threat will remain across the region.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

In the hours before

Special weather statement, May 11, 2:50 AM CDT, 2 hours 59 minutes before

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Local storm report, May 11, 3:20 AM CDT, 2 hours 29 minutes before

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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, 3:15 AM CDT	Severe Thunderstorm Warning	SHV	Nacogdoches, San Augustine, Shelby	60 min
May 11, 5:10 AM CDT	Severe Thunderstorm Warning	SHV	Nacogdoches, Panola, Rusk, Shelby	50 min
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 Considerable damage threat	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 Considerable damage threat	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 Considerable damage threat	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 Considerable damage threat	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

Flash Flood Warnings in Texas, 2023 Every flash flood 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.