A strong upper level disturbance, surface low, and cold front produced a line of severe thunderstorms that pushed across Southeast Louisiana and Southern Mississippi in the morning and early afternoon hours of Wednesday, April 10, 2024. The line of severe thunderstorms produced strong straight line winds, extensive flash flooding in the New Orleans metro area and several tornadoes.
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 LIX wrote it up.
A strong upper level disturbance, surface low, and cold front produced a line of severe thunderstorms that pushed across Southeast Louisiana and Southern Mississippi in the morning and early afternoon hours of Wednesday, April 10, 2024. The line of severe thunderstorms produced strong straight line winds, extensive flash flooding in the New Orleans metro area and several tornadoes. The strongest tornado was an EF-2 tornado that impacted the city of Slidell in St. Tammany Parish, LA on the morning of the 10th. 7 tornadoes have been confirmed from this event. 4 of those 7 touched down and tracked across just the city of Slidell. At one point, as many as 3 of those 7 were on the ground at the same time. These tornadoes have been determined to range in strength from EFU to EF2 after NWS storm surveys and high resolution satellite analysis were conducted.
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 New Orleans, LA wrote its last area forecast discussion before the first event at Apr 9, 5:42 PM CST, 13 hours 10 minutes earlier.
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</html>The Hammond radar (KHDC), 127 km away, was scanning. The volume nearest the first event began at 12:50 UTC.
22 flash flood, 17 thunderstorm wind, 7 tornado, 2 hail. Local standard time, as filed.
Thunderstorm winds downed a tree onto the Innis Senior Center along LA-418.
An EF-1 (110 mph) tornado tracked across portions of Pointe Coupee and West Feliciana Parishes carving out an approximate 24-mile-long path. A combination of on ground and high resolution satellite data was used for this survey. Based on NDVI differencing on satellite analysis, this tornado formed south of Morganza, LA within a powerful line of thunderstorms. The rate in which the tornado grew in size to 250 yards wide. It quickly moved northeast over mainly rural lands before causing more substantial tree and powerline damage as it crossed Morganza Highway when it became wider. The tree damage became increasingly more widespread and intense as the tornado crossed Levee Road and the Mississippi River from Pointe Coupee Parish and entered into West Feliciana Parish.
A strong and long-lived tornado entered West Feliciana Parish from Pointe Coupee Parish near the Cat Island Refuge. A combination of in person and NDVI differencing on satellite data was used to survey this tornado. The tree and powerline damage became increasingly more widespread and intense as the tornado crossed Levee Road and the Mississippi River. High resolution satellite imagery identified a focused swath of tree damage (snaps and uproots) roughly 200 yards in width that continued northeast through the Cat Island National Wildlife Refuge up through US Highway 61. Tree damage was observed on Highway 61 with another large swath of tree damage further northeast on Bains Road. Due to the heavily wooded and rural areas, ground surveys were impeded in identifying parts of this track as it continued northeast. Only patches of tree damage was observed in high resolution and identified in a follow up storm survey across Pepper Drive. At this time, a complex handoff to a new stronger tornado (Bains-Spillman) was underway to this tornado's east. The only apparent indication that this tornado damage path continued was difference in damage orientation on the western flank of the broader damage path as it crossed Spillman Road and a separate NDVI damage path was noted west of the new tornado damage path to the east. The exact end point of this tornado was particularly difficult to determine as it interacted and potentially merged with the tornado to its east. The peak winds during its track were approximately 110 mph, EF-1.
Numerous trees and powerlines were downed by thunderstorm winds. Widespread power outages were reported. A 62 MPH or 54 knot wind gust was measured at the New Roads Airport.
A wide swath of wind damage, nearly 2 miles wide, occurred along Highway 1 just west of Old River. Dozens of trees were downed between Purpera Road and Tarwood Lane. The Senior Center in Ennis also had a tree downed onto it. Winds were estimated between 80 and 90 mph based on the number of trees downed.
Picture of estimated quarter size hail. Relayed via social media.
An EF-2 tornado developed near Bains Road and Oak Grove Road from the culmination of numerous subtornadic vortices which could be evidently seen in linear swaths of tree damage extending southwestward toward US Hwy 61. The tornado continued to organize near Virginia Lane and Belmont Drive causing minor damage to a home and tree damage. Aerial drone footage in conjunction with high resolution satellite imagery and a follow up ground survey uncovered a swath of tree damage with numerous snaps and uproots west of Stirling Rd. As the tornado raced north-northeast, it quickly grew in size and strength and the most significant damage began after the tornado crossed Polk Brannon Road. Aerial drone footage denoted a large section of significant tree damage resulting in 70-80% of tree fall in a strongly convergent pattern. This is where the tornado was estimated to be at its strongest and widest. Ground survey was able to access along Spillman and Jones Vaughn Creek Road where numerous trees were snapped, large hardwood trees were uprooted, and several wooden electrical transmission poles were snapped. The damage path was measured to be around a half mile wide in this vicinity with widespread tornadic damage evident in combination with the Labarre-Bains tornado that was estimated to have crossed just to the west. Ground surveys were impeded in Spillman due to widespread tree damage from this tornado, but the prolific damage path remained between 150 and 350 yards wide as it tracked northeast along Highway 421. The complex interaction between this tornado and the Labarre-Bains tornado at the latter stage of its life likely contributed to the fluctuation in the damage path width. High resolution satellite analysis was used to provide the end point for this tornado in which the tornado finally lifted after crossing into rural parts of Wilkinson County in Mississippi.
The AWOS station KHZR in New Roads measured a thunderstorm wind gust of 54 knots or 62 mph.
Street flooding caused by heavy rain reported in Hammond between I-55 and Highway 51.
The East Feliciana Parish emergency manager reported widespread tree damage and minor structural damage across the entire parish. This is due to straight line wind damage associated with a bow echo and a line of severe storms that moved west to east across the parish. Wind speeds were estimated to be 70-80 miles per hour.
Thunderstorm winds downed a tree at the intersection of North 19th and Main Street.
Thunderstorm winds downed a tree onto a parked truck in Greenwell Springs. Picutre came from social media.
Thunderstorm winds downed trees and powerlines on Old Perkins Road near Santa Maria Subdivision.
Street flooding caused by heavy rain reported in downtown Baton Rouge. Streets were closed.
Thunderstorm winds downed a tree in Central along Greenwell Springs Road between Hooper and Denham Road.
Thunderstorm winds downed multiple power poles along LA 449 just south of LA 63.
Thunderstorm winds downed numerous trees along Highway 441 between Highway 442 and Highway 1036 to the north of Holden. Radar estimated time.
Trees reported down on Interstate 55 by NWS Employee. Radar estimated time.
The Carrollton Underpass was closed due to high water.
The Gentilly underpass closed due to high water.
NOFD Engine 36 Weatherstem site measured a thunderstorm wind gust of 71 mph or 62 knots.
Esplanade and Claiborne were impassible due to high water from heavy rainfall.
The Franklin underpass was closed due to high water.
Elysian Fields and Abundance were impassable due to high water.
Several inches of standing water was on Canal near the Saenger Theater.
A video showed several inches of standing water on neighborhood streets in Laplace.
Thunderstorm winds downed a tree on Hwy 434 just south of I-12.
Thunderstorm winds downed a tree on the west side of Franklinton.
A combination of high resolution satellite imagery, ground survey, and radar imagery has aided in the confirmation of a tornado that tracked across Alton and northwest parts of Slidell on the morning of April 10, 2024. This tornado touched down just south of Interstate 12 near Ben Thomas Road and tracked northeast. The tornado crossed Interstate 12 just west of US Highway 11 where the tornado was observed via video confirmation and ground survey of a couple of snapped trees. Additional roof damage to structures near Brownsvillage Rd and J.F. Smith Ave were identified via ground survey and high resolution satellite imagery with debris tossed northward into the nearby fields. Sporadic tree damage continued northeast with more widespread tree damage being identified around Alton Elementary School. The tornado then crossed US Highway 11 where more tree damage was identified along Highway 1091. Damage became more sporadic and the end point of this tornado is harder to discern due to the beginning of a stronger and larger tornado that crossed nearby this area thereafter. The tornado was rated as an EF-1 with peak winds of 95 mph, a maximum width of 200 yards, and path length of almost 5 miles.
A mesonet station on the north side of Slidell measured a thunderstorm wind gust of 60 mph or 52 knots.
A 9.3 mile long, 120 MPH, EF2 tornado touched down 1 mile north of Eden Isle and tracked east-northeast causing mainly tree damage through the first half mile or so. It then approached Pontchartrain Drive and caused damage to a few businesses. This damage included a business with all windows blown out, minor roof damage to metal buildings, and snapped power poles. It then continued on through a neighborhood causing mainly tree damage and minor roof damage to homes. It crossed onto Old Spanish Trail where the worst of the damage occurred. A metal business building had failure of roof purlins and metal beams bent. Across the street from this metal business building, two apartment buildings suffered moderate roof damage. The tornado then continued on causing mostly tree damage and minor roof damage to apartments in the Fremaux area. It crossed I-10 and continued to cause additional tree damage before it moved through a few neighborhoods just north and south of US-190, causing damage to a few homes roofs. The damage to these roofs was caused by the failure connection between the walls and the roof. Finally it tracked through the Pearl River Wildlife Management Area before snapping a billboard off of Interstate 10 near the Louisiana-Mississippi border. We received reports of multiple injuries but the total number is unknown.
Thunderstorm winds snapped a tree pine tree and several large branches approximately 50 feet from the NWS Office.
High resolution satellite analysis, ground survey, and radar imagery aided in confirming the existence of another tornado that tracked just south of the Interstate 12/10 interchange before crossing the Interstate near Military Road and impacting the neighborhoods along Crawford Landing Road. A localized area of tree damage that aligned along eastbound Exit 83 where branches and trunks were broken or bent east distinctly separates this damage from the damage path to the north and east. This tornado damage is being used as the starting point for the tornado as it aligns with the remainder of the damage path further east. As the tornado tracked east, scattered tree damage was reported across Country Club Blvd with numerous uproots, a few snaps, and many hardwood branches broken. Damage was relatively more sporadic as the tornado crossed near the Interstate interchange until damage became more apparent along Lake Village Blvd and into Crawford Landing Road. Thereafter, the tornado damage path across the Pearl River Wildlife Management Area became increasingly more apparent as the tornado appeared to intensify on high resolution satellite imagery. The tornado damage path was its widest and most intense just west of Perch Lake where the peak width was measured to be near 175 yards before exiting St. Tammany Parish and entering Hancock County along its 10 mile path. It had a peak intensity of EF-1 or 105 mph.
The beginning of a long-lived EF-2 tornado developed near Pearl River, LA near the intersection of US Highway 11 and LA Highway 41 where numerous tree branches were snapped and tossed east. A combination of high resolution satellite and radar imagery analysis indicated that this tornado quickly grew in size and intensity after it crossed Interstate 59. Widespread tree damage could be seen on true color satellite imagery growing to a damage path as wide as 300 yards over the Pearl River Basin. Extensive wind damage could be seen extending outward half a mile south of the tornado path as the tornado approached the Louisiana-Mississippi border. Damage to a metal outbuilding was observed after the tornado crossed into Stennis Space Center. This began a very complex interaction of tornado dissipation and genesis around southern Stennis where the damage path of this tornado abruptly ends.
A car flooded in an apartment parking lot with several inches of standing water. Water entered at least one apartment unit.
Deep water covered Robert Road in Slidell.
Several inches of standing water was reported in Ozone Woods subdivision.
A parking lot near the I-10/12 interchange was flooded with several inches of standing water.
Multiple streets across Chalmette were flooded.
Multiple streets were flooded with several inches of standing water.
Several inches of standing water was reported on multiple streets through the Greenleaves subdivision. Some streets were impassible.
One inch hail reported by the public via social media.
Several inches of standing water was reported in Lakeview with some roads impassible. Via social media.
Several inches of standing water was reported in St. Roch area of New Orleans via social media.
Roads were impassable throughout Elmwood area. Pictures via social media.
Multiple streets along Galvez were impassible due to high water.
Several inches of standing water was reported at the intersection of Berry Todd and Shady Pine Rd.
Multiple streets near Almedia were impassible due to high water.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2024Every state in 2024This day in weather historyThe tornado archive for Louisiana, 2024Warnings in Louisiana, April 2024
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: 1172629, 1172665, 1172683, 1172669, 1177930, 1177926, 1172705, 1177991, 1177900, 1177986, 1177957, 1177960, 1177961, 1177901, 1177963, 1177988, 1177989, 1177994, 1177902, 1177903, 1177990, 1177904, 1177905, 1177906, 1177907, 1177908, 1177992, 1177995, 1172735, 1178000, 1178254, 1177993, 1178275, 1172749, 1177909, 1177910, 1177911, 1177912, 1177913, 1177914, and more.