A weak upper level trough extended from the Middle Red River Valley into the Lower Mississippi Valley during the morning hours of May 28th. Given that a very moist and unstable air mass was in place across North Louisiana, large scale forcing aloft from this weak trough contributed to the development of scattered showers and thunderstorms across much of Northeast Louisiana from the mid-morning…
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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 weak upper level trough extended from the Middle Red River Valley into the Lower Mississippi Valley during the morning hours of May 28th. Given that a very moist and unstable air mass was in place across North Louisiana, large scale forcing aloft from this weak trough contributed to the development of scattered showers and thunderstorms across much of Northeast Louisiana from the mid-morning to the late afternoon hours. These storms were efficient rainfall producers, contributing to locally heavy rainfall that fell across the city of Monroe in Ouachita Parish. Rainfall amounts of 2-3+ inches fell in a short period of time across the city, which contributed to multiple streets being flooded throughout the University of Louisiana-Monroe campus.
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 May 28, 11:17 AM CST, 43 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Shreveport LA 1217 PM CDT Thu May 28 2026 ...New DISCUSSION, AVIATION, SPOTTER INFORMATION STATEMENT... .KEY MESSAGES... Issued at 1143 AM CDT Thu May 28 2026 - Scattered to numerous showers and thunderstorms are continuing across our far east, northeast and northern zones today as a weak upper level trough continues to advance northward from the Ouachitas in Southeast Oklahoma to the Lower Miss Valley. - Weak upper ridging builds into the region from the west for the upcoming weekend and that should allow for temperatures to soar. - The strength of the upper ridge is uncertain as we move into the upcoming work week and that will keep at least small storm chances in the forecast. && .DISCUSSION... Issued at 1143 AM CDT Thu May 28 2026 A well defined shortwave trough or shear axis was observed this afternoon across the Middle Red River Valley into the Lower Miss Valley. Rainfall developed in the vicinity of this axis late last night into the predawn hours this morning and given this also coincides where our highest PWATs reside, when you add just a little heating, you get scattered to numerous showers and thunderstorms continuing across our far eastern, northeastern and northern zones. This activity has shown a tendency to finally begin lifting northward but will continue to be at least a minor flood threat through the evening hours. This upper level trough is fcst to move very slowly north and east through the day Friday which should result in higher rain chances once again across our far eastern and northeast zones, much like today but hopefully not as widespread. Also cannot rule out at least isolated strong to severe thunderstorms with this pattern as well, mainly across our northern half. Much of this will be tied to daytime heating and instability as deep layer shear is not what we would like to see for more widespread severe convection. Meanwhile in the wake of the upper trough, upstream ridging will move our way out of the Texas Hill Country and this feature will begin impeding into our region Friday Night and into the upcoming weekend. This should result in high temperatures climbing into the lower and middle 90s across most locations both Sat and Sun but that doesn't necessarily mean we are done with potentially impactful severe weather. This ridge is what we refer to as a dirty ridge as there will be pockets of ascent embedded in the ridge, moving our way from the Tx Hill Country. That combined with daytime heating and a potentially very unstable atmosphere would be the key ingredients necessary for at least isolated to widely scattered strong to severe storms during the afternoon and evening hours. Can't rule out nocturnal convection as well, especially across our northern and eastern most zones both Sat and Sun Nights under this pattern. As stated above in the Key Messages headline, the strength and position of the upper level ridge as we begin the upcoming work week is far from certain. While this feature does appear to be stronger to start the week vs mid to late week next week, this could obviously change. For now, the NBM is advertising at least small rain chances each day next week and this is warranted given the above mentioned uncertainties. A stronger early week ridge continuing through the middle and end of next week would of course result in lower rain chances and much higher temperatures than what we are currently advertising. 13 && .AVIATION... (18Z TAFS) Issued at 1143 AM CDT Thu May 28 2026 For the 28/18Z TAF period, a wide range of cig heights and weather conditions span our airspace from west to east. VFR conditions are in place across our East TX terminals with little more than fair wx cumulus and some passing cirrus. Meanwhile, very active convection continues at KELD and KMLU early this afternoon with MVFR/IFR cigs to go along with the ongoing showers and isolated thunderstorms in our eastern airspace. In between, some altocu cigs around 10Kft are noted at KSHV and KTXK along with dense cirrus above that. VCSH/VCTS will be possible across our western sites through this afternoon and early evening, but convection will largely remained confined to KELD and KMLU during the afternoon/evening timeframe before diminishing altogether closer to midnight as a trough begins to lift northward. Some patchy low stratus will return by early Friday morning so MVFR and IFR cigs will be possible along with patchy fog as winds become light and variable through the remainder of the period. /19/ && .SPOTTER INFORMATION STATEMENT... Issued at 1143 AM CDT Thu May 28 2026 While widespread severe thunderstorms do not appear warranted through tonight across the Four State Region, isolated strong to severe thunderstorms which also may pose a flood threat cannot be ruled out through tonight. 13 && .PRELIMINARY POINT TEMPS/POPS... SHV 68 89 72 92 / 20 20 20 20 MLU 69 87 71 91 / 40 30 20 20 DEQ 65 86 68 90 / 30 20 20 20 TXK 67 89 70 93 / 30 20 20 20 ELD 66 85 68 90 / 40 30 20 20 TYR 69 91 73 92 / 20 20 20 10 GGG 69 90 72 92 / 20 20 20 20 LFK 69 92 72 93 / 20 20 20 20 && .SHV WATCHES/WARNINGS/ADVISORIES... AR...None. LA...None. OK...None. TX...None. && DISCUSSION...13 AVIATION...19
The Shreveport radar (KSHV), 165 km away, was scanning. The volume nearest the first event began at 18:01 UTC.
1 flash flood. Local standard time, as filed.
Several intersections were flooded with ankle deep or higher water throughout the University of Louisiana-Monroe campus.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2026Every state in 2026This day in weather historyWarnings in Louisiana, May 2026
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: 1340435.