'Life threatening' floods possible with Potential Tropical Cyclone One

An ambitious knot of showers and thunderstorms is working to earn the name Arthur, the first tropical cyclone of 2026, but it is expected to be short-lived and sloppy if it gains the title.

The system, which was dubbed Invest 90L on Monday June 15 and upgraded to Potential Tropical Cyclone One on Tuesday, is over southern Texas and is forecast to emerge over the northwestern Gulf today.

The Gulf is sufficiently warm to support cyclone spin up, and other conditions, including wind shear, are "marginally" welcoming for the formation of a tropical storm, according to the National Hurricane Center in a an advisory early Tuesday June 16.

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