Published: Thu, April 20, 2017
Research | By Jo Caldwell

First tropical depression of the year forms in the Atlantic

First tropical depression of the year forms in the Atlantic

Subtropical depression one has transitioned into a tropical depression and is expected to dissipate Thursday night or Friday, the U.S. National Hurricane Center said in its latest advisory on Thursday.

The system is running out of time to become Tropical Storm Arlene.

But in a twist, the system turned fully tropical today with a more symmetric grouping of thunderstorms and 35 mph winds - four miles below tropical storm status.

The system has migrated from part tropical and part subtropical to a fully tropical system.

A tropical storm has winds ranging from 39 to 73 miles per hour that rotate around a well-organized center that contains showers and thunderstorms.

The year's first subtropical depression strengthened Thursday into the year's first tropical depression.

Tropical depression One is no threat to land, but notable for its early formation.

The Atlantic Hurricane Season doesn't officially start until June 1.

Forecasters have said that a near-average season is expected. The 1992 cyclone was an unnamed subtropical system and the 2003 cyclone was Tropical Storm Ana.

Like this: