Tropical Storm Melissa is expected to strengthen and could be a Category 4 hurricane by next week.

Forecasts continue to be challenging when it comes to Melissa's path and intensity.

Here's what Florida residents should know and should be doing.

could become one of the in the Atlantic.

That's never good news but what's worse is that forecasters are finding it to figure out what Melissa will do.

The system is now expected to undergo rapid intensification and grow into a powerful Category 4 hurricane by early next week, according to the Predictions on how strong Melissa will get keep changing.

A major hurricane is one that is at least a Category 3 storm, with maximum sustained winds of at least 111 mph.

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