Tropical Storm Arthur Slams Louisiana With Tornadoes and Flash Flooding in Season's First Named Storm

The Gulf Coast's first named storm of 2026

Tropical Storm Arthur made landfall Wednesday along the Texas Gulf Coast near Matagorda before churning northeast and unleashing its worst impacts across southeast Louisiana overnight — confirming forecasters' warnings that the storm would be dangerous regardless of its relatively modest tropical-storm-force winds.npr Arthur became the first named storm of the 2026 Atlantic hurricane season and struck a region still sharpening its disaster-readiness posture after years of costly hurricanes.npr

Three confirmed tornadoes, tens of thousands without power

The National Weather Service confirmed three EF1 tornadoes touched down across southeast Louisiana.fox8live The first struck Houma around 10:30 p.m. Wednesday with estimated peak winds of 95 mph; a second hit the west bank of Jefferson Parish just after midnight with winds near 90 mph; a third cut across the east bank of Jefferson and Orleans parishes at approximately 95 mph.fox8live In Avondale, strong winds tossed a mobile home into an adjoining structure, destroying the former and injuring two residents, both of whom were in stable condition.nola Kenner police reported 50 to 70 vehicles stalled after six to 10 inches of rain fell in less than two hours.fox8live

At its peak, more than 22,000 customers lost power in New Orleans and Jefferson Parish alone.nola The New Orleans Sewerage and Water Board also temporarily lost power to drainage pumps for 30 to 60 minutes during the storm, before crews restored full service by 7:30 a.m.nola Governor Jeff Landry declared a state of emergency for six parishes, including St. Tammany, Terrebonne, and Lafourche.lailluminator

Lingering flood threat extends into Friday

Although Arthur weakened to a post-tropical cyclone after landfall, forecasters warned its remnants could produce four to eight inches of rain across the Gulf states — with isolated totals near 20 inches — through early Friday.fox8live A flash flood emergency was declared near the Nicholson and Picayune areas of coastal Mississippi, where Interstate 59 and Highway 11 were submerged.fox8live The National Weather Service extended a flood watch through Friday morning across most of southeast Louisiana and southwest Mississippi.nbcnews

One road crew worker was killed in Franklin County, Mississippi, during cleanup efforts; no storm-related deaths had been reported in Louisiana as of Thursday morning.lailluminator New Orleans Mayor Helena Moreno said the city "fared pretty well" relative to surrounding parishes, though scattered tree damage and brief pump-station failures were confirmed.nola Officials warned residents to document property damage before cleanup and urged drivers to stay off flooded roads as rivers continued rising across the region.nbcnews