A prolonged period of very heavy rainfall along with severe thunderstorms occurred on October 4th-5th across parts of Northeast Texas. Showers and thunderstorms with 1-3 inch per hour rainfall rates trained in the vicinity of a warm front, which was oriented across the Ark-La-Tex and in adjacent portions of Southeast Oklahoma and Northeast Louisiana.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS SHV wrote it up.
A prolonged period of very heavy rainfall along with severe thunderstorms occurred on October 4th-5th across parts of Northeast Texas. Showers and thunderstorms with 1-3 inch per hour rainfall rates trained in the vicinity of a warm front, which was oriented across the Ark-La-Tex and in adjacent portions of Southeast Oklahoma and Northeast Louisiana. Deep convergence of moisture along the boundary resulted as the core of the low-level jet and associated moisture transport was directed due north from the Upper Texas coast. Other factors contributing to the heavy rainfall and severe storms included a sharp instability gradient with mean-layer CAPE values from 500-1500 J/kg, maximized precipitable water values from 2.0-2.2 inches and effective bulk shear of 25-30 knots. As a result, this area of Northeast Texas quickly became more favorable for increasing convective organization as multi-cell thunderstorms continued to train over the same areas from late morning throughout much of the afternoon and evening. Over time, flash flooding developed in areas impacted by 4-8 inch rainfall totals, most notably in and around the Texarkana metro area. Severe impacts from damaging wind gusts occurred farther south closer to the Interstate 20 corridor.
The local office's own words before the first event, 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 the first event at Oct 4, 9:50 AM CST, 45 minutes earlier.
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</html>Hazardous Weather Outlook National Weather Service Shreveport LA 507 AM CDT Wed Oct 4 2023 ARZ050-051-059>061-070-071-OKZ077-TXZ096-097-108>112-124>126-051100- Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette- McCurtain-Red River-Bowie-Franklin-Titus-Camp-Morris-Cass-Wood- Upshur-Marion- 507 AM CDT Wed Oct 4 2023 ...FLOOD WATCH IN EFFECT FROM 7 AM CDT THIS MORNING THROUGH THURSDAY MORNING... This Hazardous Weather Outlook is for southwest Arkansas, southeast Oklahoma and northeast Texas. .DAY ONE...Today and tonight. Scattered to numerous showers and thunderstorms are expected to develop today across portions of Northeast Texas, Southeast Oklahoma, and Southwest Arkansas. Locally heavy rainfall will be possible, which may result in localized flooding of low lying, poor drainage areas. Additional showers and thunderstorms will track through the region late this evening and overnight, which will result in a renewed threat for locally heavy rainfall and localized flooding before diminishing late. Locally gusty winds will also be possible from these storms as well. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Showers and thunderstorms will shift to the southeast and diminish across the region Thursday morning. Much cooler and drier air will begin to filter south Friday, and especially for the upcoming weekend. A slow warming trend will commence Monday, but dry conditions will continue. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed today and tonight for the potential for rainfall and flooding reports, as well as gusty winds associated with the storms late this evening and overnight. ARZ072-073-LAZ001>006-010>014-017>022-TXZ136>138-149>153-165>167- 051100- Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto- Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-Grant- Caldwell-La Salle-Smith-Gregg-Harrison-Cherokee-Rusk-Panola- Nacogdoches-Shelby-Angelina-San Augustine- 507 AM CDT Wed Oct 4 2023 This Hazardous Weather Outlook is for south central Arkansas, southwest Arkansas, north central Louisiana, northwest Louisiana, east Texas and northeast Texas. .DAY ONE...Today and tonight. Isolated to widely scattered showers and a few thunderstorms will be possible today across Lower East Texas, North Louisiana, and Southcentral Arkansas. While this may diminish this evening, a line of showers and thunderstorms will spread into Southern Arkansas and East Texas late tonight as they begin to weaken. Locally gusty winds and brief heavy rainfall will be possible late tonight. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Showers and thunderstorms are expected to continue to diminish Thursday morning as they move into Deep East Texas and North Louisiana. While brief heavy rainfall may accompany some of the storms during the morning, no organized hazardous weather is expected. Cooler and drier air will spread south into the region Friday and Saturday, with gusty northerly winds expected over Northcentral Louisiana where humidities will be abnormally low, and any wetting rains the next couple of days will be light. This will result in an enhanced fire danger over this area Saturday, before winds diminish Saturday night and Sunday. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed late tonight over portions of East Texas, Southcentral Arkansas, and Northwest Louisiana. 15
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</html>The Shreveport radar (KSHV), 115 km away, was scanning. The volume nearest the first event began at 16:35 UTC.
7 flash flood, 5 thunderstorm wind. Local standard time, as filed.
Water reported up to a foot deep at the intersection of Summerhill Road and Moore's Lane in Texarkana.
Multiple roads closures and vehicles stalled in floodwaters in Texarkana, including on Kennedy Lane at Cowhorn Creek.
Roadway flooded at the intersection of Spur 284 and FM 114 in Omaha.
Trees downed across Highway 154.
Trees downed in the Pleasant Grove community.
Scattered trees downed across northern Upshur County.
County Road 1676 was flooded and closed, causing a vehicle to be stranded in high water.
West College Avenue and South Donahoe Street were flooded in Clarksville.
Numerous roads were flooded and closed across parts of northcentral Bowie County.
Smith County Sheriff's Office reported power lines downed on the west side of Tyler.
Several trees downed in Tyler.
High water reported near UT Tyler Health with several intersections flooded in the city of Tyler.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2023Every state in 2023This day in weather historyWarnings in Texas, October 2023
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1144210, 1144211, 1144212, 1145293, 1145294, 1145296, 1145289, 1145290, 1145291, 1145295, 1145297, 1145292.