Tropical Storm Melissa is moving at a snail's pace but will intensify rapidly over the weekend as it feeds off near-record-warm water temperatures in the Caribbean Sea, forecasters say.

It's still uncertain which way Melissa will track, and how quickly, but the storm is likely to bring colossal rains and life-threatening flooding to multiple islands in the Caribbean.

Forecasters expect Hurricane Humberto to pull Tropical Storm Imelda away from landfall and into a Fujiwhara dance, but the East Coast is still set to experience heavy rains and life-threatening rip currents.

Millions across China are under evacuation or stay-at-home orders as the storm closes in on the country's southern coast.

Weather predictions show that Hurricane Kiko could hit Hawaii next week, but forecasters say the Category 4 storm will weaken to a tropical storm or low-category hurricane this weekend.

The current hurricane classification does not consider storm surge and rainfall risks, which cause almost 80% of hurricane-related deaths. A new scale could help people better prepare for storms.

NOAA forecasts suggest we could experience La Niña conditions in the fall and early winter. However, this potential La Niña spell is unlikely to break records.

NOAA's GOES-19 satellite captured images of Hurricane Erin as it developed in the Atlantic and then rapidly strengthened into a Category 5 storm.