Hurricane Iona has strengthened into a Category 3 storm far southeast of the Hawaiian Islands. The NHC is also tracking more in the Pacific.

The National Hurricane Center is monitoring Invest 93L off Florida. Chances for development stand at 40% over the last 48 hours.

The National Hurricane Center continued Monday to assess a tropical wave moving across the Atlantic with a chance to develop into the season’s next tropical depression or storm.

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The National Hurricane Center gives the latest update on Hurricane Iona and says it is "rapidly weakening" to the south of Hawaii.

While the National Hurricane Center's map is lit up with a tropical disturbance, Saturday's forecast is much more about the heat index.

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While the National Hurricane Center's map is lit up with a tropical disturbance, Saturday's forecast is much more about the heat index.

A so-far unremarkable Atlantic hurricane season is heading for a 'pivot point,' forecasters warn. Here's what to expect.

The National Hurricane Center on Thursday lowered its forecast chances that a system that had moved over Florida the day previous could develop into the season's next tropical depression or storm.

The chances for a scattered area of showers and thunderstorms to develop into something more increased overnight, but remain low, forecasters said.

The National Hurricane Center is now tracking four tropical waves with the development of a new one in the Caribbean.