LAFAYETTE, La. — Tropical Storm Arthur formed Wednesday morning near the middle Texas coast, and it has southwestern Louisiana in its crosshairs. The first named storm of the 2026 Atlantic hurricane season, Arthur, is expected to move inland through the Texas-Louisiana border on Wednesday night and push heavy rain, flash flooding, coastal storm surge, and gusty winds through Acadiana into Thursday morning.
The National Hurricane Center reported maximum sustained winds of 45 mph as of its early afternoon Wednesday advisory, with the center 170 miles west-southwest of Lake Charles and tracking northeast. Little additional strengthening is expected before landfall.
NHC Director Michael Brennan made the stakes plain in a public briefing on Wednesday, saying “The main threat from Arthur is going to be a prolonged multi-day heavy rainfall event that could produce dangerous to life-threatening flash flooding. And that heavy rainfall threat is going to persist even after the center of Arthur moves farther inland and dissipates.”
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What the Tropical Storm Warning Means for Coastal Acadiana
A Tropical Storm Warning is in effect from Sargent, Texas, to Morgan City, Louisiana — covering coastal Cameron, Vermilion, Iberia, and St. Mary parishes — per the National Hurricane Center and KLFY. That designation means tropical storm conditions — winds gusting above 40 mph — are expected within 12 hours. A Coastal Flood Warning covers Cameron, Vermilion, Iberia, and St. Mary parishes. The National Weather Service in Lake Charles said roads will close, and that low-lying homes, businesses, and infrastructure will be inundated.
Storm surge of 2 to 4 feet is expected along the immediate Louisiana coast, according to the NWS Lake Charles. Residents in low-lying coastal areas in those four parishes need to move valuables and vehicles to higher ground now.
The Rain Threat: Who Gets How Much, and When
The National Hurricane Center projects Arthur will produce 5 to 10 inches of rain across the northern Gulf Coast through early Friday, with isolated amounts near 20 inches. For Lafayette specifically, the National Weather Service is forecasting 6 to 8 inches, according to NOLA.com…