Environment Canada is warning Atlantic Canadians to clear drains and batten down outside items as high winds, heavy rains — and even some snow — get set to batter the region.

The weather agency has issued warnings for all of mainland Nova Scotia, P.E.I. and southern New Brunswick as a low-pressure system moves into the region today.

Between 25 to 40 millimetres of rain is expected across the Maritimes between this afternoon and early Monday morning with a snowy mix possible in some areas, especially at higher elevations.

High winds are also expected, with gusts up to 100 km/h possible in western Cape Breton.

Northumberland Ferries is warning passengers that the ferry service between P.E.I. and Nova Scotia may be cancelled because of wind Monday morning.

Marine Atlantic has also cancelled several crossings for Sunday and Monday between Nova Scotia and Newfoundland.

The Confederation Bridge issued a wind advisory, indicating traffic restrictions between 3 a.m. and 5 p.m. on Monday.

On Sunday afternoon, the Angus L. Macdonald Bridge in Halifax temporarily closed as a precaution after high winds blew unassembled scaffolding pieces onto the road.

There were no injuries, according to Steven Proctor, communications manager of Halifax Harbour Bridges. He said the bridge would reopen once crews clear the debris and inspect the area for safety.

High winds and rain also knocked out electricity for more than 6,000 Nova Scotia Power customers in western Nova Scotia Sunday afternoon.

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