The tropical storm that has lashed parts of the eastern United States should be diminished in strength by the time it reaches eastern Canada.

Isaias weakened from a hurricane to a tropical storm late Saturday afternoon, but was still expected to bring heavy rain and flooding as it barrels toward Florida.

"We'll start seeing impacts tonight," Florida Gov. Ron DeSantis warned during a news conference. "Don't be fooled by the downgrade."

On Thursday while still a tropical storm, Isaias knocked out power, toppled trees and caused widespread flooding and small landslides in the Dominican Republic and Puerto Rico.