What's left of tropical storm Andrea is soaking the Maritime provinces, leaving thousands of power customers without electricity.

The Canadian Hurricane Centre said the storm is responsible for dumping at least 60 millimetres of rain on many areas.

Meteorologist Doug Mercer said more than 90 millimetres fell on New Brunswick's Grand Manan Island.

Mercer saidAndrea is expected to move across Newfoundland on Sunday, soaking southern parts of the island with about 50 millimetres of rain.

At one point, more than 4,000 customers were without power in western Nova Scotia and parts of New Brunswick, mostly in the Fredericton and Rothesay areas.

Kathleen Duguay, a spokeswoman for NB Power, says the storm has damaged some power lines, but crews are working to get customers back online as soon as possible.

Heavy downpours created slick roads and poor visibility for drivers.

Nova Scotia RCMP spokesman Scott Warnica said police had a busy day with crashes, particularly on the 100 series highways.

"Drivers are obviously driving too quickly for the conditions. They are hydroplaning and either running into other vehicles or running off the road," he said.

Warnica said there have so far been no serious injuries.

The Confederation Bridge was restricting high-sided vehicles from crossing until the high winds died down. It has since reopened.

The U.S. National Hurricane Center said in a statement released Friday evening that Andrea had become a post-tropical storm. It has hammered Florida with rain, heavy winds and tornadoes as it moved toward the coast of Georgia and the Carolinas.

Officials in South Carolina said there were no reports of injuries or significant damage.