Rescuers have called off the search for a Florida man who failed to return from a kayaking trip in Banff National Park.

Parks Canada spokeswoman Tania Peters said all was clear and sunny when Matthew Andre Brown, 30, took his rented kayak for a trip along Bow Lake, near Lake Louise, Alta., on Saturday evening.

However, a storm blew through the region, knocking out power in some areas and causing other problems.

Brown's friends became concerned when he didn't return, Peters said.

Despite a massive search that involved helicopters, dogs and powerboats, crews did not find him.

Only his overturned kayak was found in the water, his belongings still inside.

"We just exhausted all sorts of our search proximity of the lakeshore area and had not found any evidence to indicate that the gentleman had come to shore," Peters told CBC News.

It has now been deemed a missing person's case with the RCMP, Peters said.