Wednesday, June 17: Latest insights on Post Tropical Cyclone Arthur from the National Hurricane Center

Article first published: Wednesday, June 17, 2026, 5 a.m. ET

Article last updated: Wednesday, June 17, 2026, 11 p.m. ET

System type: Post-tropical cyclone

System name: Arthur

The post-tropical cyclone system was last addressed in a final advisory by the National Hurricane Center at 11 p.m. Wednesday. The system changed into a tropical storm and was named Tropical Storm Arthur before it devolved to a post-tropical cyclone with sustained winds of 35 mph. The 11 a.m. report was the first to confirm the system's new name. Post Tropical Cyclone Arthur is 35 miles north-northeast of Galveston, Texas and 85 miles west-southwest of Lake Charles, Louisiana. It is moving to the northeast at 9 mph, with maximum sustained winds of 35 mph.

"... the remnants of Arthur should move farther inland over southeastern Texas and western Louisiana tonight, then cross the southeastern United States Thursday through Friday," according to analysts. They also said "While additional weakening is expected as the system moves inland, the remnants of Arthur will continue to produce widespread heavy rains across the southeastern United States during the next few days."

Forecasters issued a tropical storm warning for portions of the Louisiana coast.

Changes with this advisory

All coastal watches and warnings are discontinued.

Hazards affecting land

Rainfall Arthur is expected to produce rainfall totals of 5 to 10 inches, with isolated higher totals near 20 inches, through early Friday from the Mid and Upper Texas coast east-northeast into southern and central portions of Louisiana, Mississippi, and Alabama, along with western portions of Georgia and the Florida Panhandle. This could generate dangerous to life-threatening flash flooding.

For a complete forecast of rainfall associated with the remnants of Arthur, please see the National Weather Service Storm Total Rainfall Graphic available at hurricanes.gov/graphics_at1.shtml?rainqpf and the Flash Flood Risk graphic at hurricanes.gov/graphics_at1.shtml?ero.

For a list of rainfall observations (and wind reports) associated with Arthur, see the companion storm summary at WBCSCCNS1 with the WMO header ACUS44 KWBC or at the following link:

Www.wpc.ncep.noaa.gov/discussions/nfdscc1.html.

Wind. Winds gusts to tropical-storm force are possible along the Louisiana coast tonight.

Storm surge. Water levels remain elevated along the Upper Texas coast but will continue to subside overnight.

Surf. Swells generated by Arthur are likely to cause life-threatening surf and rip current conditions along the northwestern Gulf Coast for the next day or two.

A depiction of rip current risk for the United States can be found at: hurricanes.gov/graphics_at1.shtml?ripCurrents

Tornado A few tornadoes are possible tonight across southeast Louisiana and southern Mississippi, and tomorrow into parts of Alabama, Georgia, and the Florida Panhandle.

Source: National Hurricane Center

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This story was originally published June 17, 2026 at 10:59 PM.