Tropical Depression Forms in Atlantic, Expected to Dissipate

First depression of season turns fully tropical, what it means

The system is expected to dissipate Thursday night or Friday.

The first subtropical depression of the 2017 Atlantic hurricane season formed on Wednesday and became fully tropical Thursday.

A depression has a cyclonic circular motion with surface winds under 39 miles per hour.

Technically, subtropical systems have their strongest winds further from the center and don't have a fully warm core. The National Hurricane Center however, has issued warnings about Subtropical Depression One for the Azores as it moves with maximum sustained winds of 55 km per hour and gusts of 75 km per hour.

The tropical depression was a subtropical depression until Thursday morning. The NHC said thunderstorms around the center become more symmetric.

The storm is projected to head north and will not be a threat to land, according to AccuWeather meteorologists.

Hurricane season runs from June 1 to November 30, but past year two storms formed before the official start of the season.

But Mayfield said the change is status it is a testament to how far technology has come that forecasters can make the observations so far out to sea. The first name on the list for tropical storms for this year is Arlene.

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