Global Affairs Canada says thousands of Canadians are in the path of extreme weather expected to hit the U.S. and Southeast Asia.

The department says 440 Canadians have registered in areas expected to be impacted by , while 3,446 Canadians have registered in areas expected to be impacted by

It says 149 Canadians have registered in areas that tropical storm Isaac could affect.

Global Affairs noted that registration is voluntary, so the numbers are only estimates.

The department says it is ready to provide consular assistance to Canadians if required, and travel to the U.S. east coast should be avoided, especially from Edisto Beach in South Carolina to Duck, N.C.

Forecasters still aren't sure where exactly hurricane Florence will make landfall, but they expect it will cover the North Carolina and South Carolina line.