Hurricane Irma: What you need to know

CBC News is reporting a large amount of rain is expected to fall in the Caribbean this weekend as a tropical storm approaches.

CBC is quoting a storm surge advisory issued by the U.S. National Hurricane Center that states up to three feet of rain could fall in some areas on Sunday night.

The storm, which is expected by Thursday night to be a Category 4 hurricane, is expected “to cause widespread and substantial coastal flooding and coastal erosion,” the advisory says.

It warns coastal areas in the southeastern Bahamas and the northeastern Caribbean Sea could be at “hazardous” levels.

In addition, it’s “likely” that “large swaths of the Bahamas, eastern Bahamas, and southeastern Bahamas could be completely submerged or flooded in areas with high-risk flooding.”

The storm is forecast to weaken over the next few days and weaken again before it heads northward on Sunday.

As of Saturday, Irma had maximum sustained winds of 85 kilometres per hour (56 mph), according to the National Hurricane Centre.

It is expected along the west coast of Florida to strengthen over the weekend and move into the Bahamas by Sunday night or Monday morning.

It’s also forecast to move into a category 4 hurricane early Monday morning, according to NHC.