Gulf Coast could be in for flooding
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When classifying these storms, the major factor taken into account is the wind. Tropical depressions have winds of less than 38 mph; tropical storms have winds of 39 - 73 mph.
The National Institute of Standards and Technology (NIST) has released a video update and press release on its study of Hurricane Maria's impacts on Puerto Rico.
Here are some key concepts to help you better grasp this year's hurricane season. What is the difference between a tropical storm and a hurricane? All hurricanes are tropical storms.
Chantal has weakened into a post-tropical cyclone and the flash flood threat from the storm has wanted, according to the National Hurricane Center.
Tropical Storm Chantal, the first of the year to impact the coast, is expected to hit Georgetown County early Sunday and linger for 12 hours, then move on.