A vigorous upper level shortwave trough shifting northeast across Oklahoma into the Ozarks during the evening through the early morning hours of November 24th-25th, drove a surface frontal system through the Southern Plains. Large scale forcing ahead of the trough and cold front produced a line of strong thunderstorms that moved east through the Four State Region during the evening and overnight…
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 vigorous upper level shortwave trough shifting northeast across Oklahoma into the Ozarks during the evening through the early morning hours of November 24th-25th, drove a surface frontal system through the Southern Plains. Large scale forcing ahead of the trough and cold front produced a line of strong thunderstorms that moved east through the Four State Region during the evening and overnight hours. Strong instability and forcing resulted in these storms exploding vigorously to the west over North Texas early in the evening, producing some severe wind gusts even as the storms moved into portions of East-central Texas. These storms gradually weakened as they pushed through the remainder of East Texas, but strengthened as they moved into Northwest Louisiana (including Shreveport) after 2 am, where 60 mph winds were measured and downed trees and power lines across portions of Caddo, Bossier, Webster, and Bienville Parishes. These storms weakened further just before daybreak on the 25th as they moved across Northcentral Louisiana.
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 Nov 24, 11:41 PM CST, 2 hours 20 minutes earlier.
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</html>Hazardous Weather Outlook National Weather Service Shreveport LA 807 PM CST Tue Nov 24 2020 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077- TXZ096-097-108>112-124>126-136>138-149>153-165>167-260215- Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette- Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto- Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn- Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp- Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk- Panola-Nacogdoches-Shelby-Angelina-San Augustine- 807 PM CST Tue Nov 24 2020 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 cold front will begin pushing through the region tonight, bringing a chance for showers and thunderstorms. A Marginal Risk is in place for most of the Four-States region, as some of these thunderstorms will be strong to severe. Damaging winds appear to be the primary threat, with an isolated tornado or two possible. .DAYS TWO THROUGH SEVEN...Wednesday through Monday... Thunderstorms will be possible in our eastern zones Wednesday morning as the front continues east. Behind the front, drier and cooler weather will move into the region for Wednesday and Thursday. However, shower and thunderstorm chances will increase by Friday, and remain through the weekend. Some of this rain will moderate to heavy at times. .SPOTTER INFORMATION STATEMENT... Activation of emergency management personnel...amateur radio operators...and storm spotters will be needed. Please relay any information about observed severe weather to the NWS while following all local, state, and CDC guidelines.
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</html>The Shreveport radar (KSHV), 2 km away, was scanning. The volume nearest the first event began at 07:58 UTC.
6 thunderstorm wind. Local standard time, as filed.
A 60 mph wind gust was measured at the Shreveport Regional Airport.
A tree was blown down on West 84th Street near David Street.
A 60 mph wind gust was estimated on Ferry Creek Drive in the Ellerbe Road Estates in Southeast Shreveport. Report from a retired NWS employee.
An estimated 60 mph wind gust was reported just east of Doyline.
A tree was blown down blocking Johnson Road at Camp Bistineau Road near the north side of Lake Bistineau.
Trees were blown down on Highway 153 and Thompson Road just north of the Ashland community.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2020Every state in 2020This day in weather historyWarnings in Louisiana, November 2020
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 2026-10-01. Each event’s entry at NCEI: 927912, 927922, 927913, 927920, 927916, 927921.