Hurricane Tammy shifted into an extratropical cyclone on Thursday with a path that will keep its large windfield away from Bermuda, according to the National Hurricane Center.

An aerial view of an area affected by an extratropical cyclone in Muçum, in Rio Grande do Sul state, Brazil, on Tuesday. Authorities are warning there could be more flooding to come.

Torrential rain and winds caused by an extratropical cyclone have left at least 21 people dead in southern Brazil, officials said Tuesday, warning more flooding may be coming. The latest in a ...

At least 12 people have died, five are missing and nearly 3,000 have been left homeless after an “extratropical cyclone” hit Brazil’s Rio Grande Do Sul, local authorities say.

Kirk remains a hurricane over open Atlantic. It is still causing large swells and rip currents along East Coast.

What happens when an atmospheric river meets a bomb cyclone? An atmospheric river is exactly what it sounds like – it’s a long, narrow river of water vapor in the lower atmosphere.

(CNN) — At least 12 people have died, five are missing and nearly 3,000 have been left homeless after an “extratropical cyclone” hit Brazil’s Rio Grande Do Sul, local authorities say.

An extratropical cyclone has been battering southern Brazil, flooding homes, swelling rivers and claiming the lives of nearly two dozen people, state authorities said on Tuesday.