Residents of Newfoundland are being warned they should expect flooding, power outages and high waves on Tuesday as Hurricane Igor approaches from the Caribbean.

Environment Canada issued a tropical storm warning for southeastern Newfoundland, and Environment Canada issued heavy rainfall warnings of up to 150 millimetres.

Igor moved past Bermuda as a Category 1 hurricane, delivering driving rain and powerful winds to Bermuda. But there were no reports of significant damage.

The hurricane itself is not expected to make landfall in Newfoundland. It is forecast to reduce in strength and become a tropical storm after hitting the Grand Banks off the province's coast.

Husky Energy is now evacuating most personnel from its oil rig working the White Rose offshore oilfield in the Grand Banks. All 88 workers aboard the GFS Grand Banks were removed from the rig by Sunday. And the 110 workers aboard the Henry Goodrich were being airlifted to St. John's, N.L. Monday.

The storm is expected to approach Newfoundland's shores on Tuesday and may carry winds of more than 100 km/h, prompting Environment Canada to post tropical storm warnings for St. John's, the Avalon Peninsula, Clarenville, the Bonavista Peninsula and the Burin Peninsula.

"The amount of rain forecast means residents and communities must be diligent in emergency preparations to ensure minimal impact," the provincial government said in a news release.

"Residents and municipal officials should assess their individual situations to determine the steps they can take to ensure their safety and security during this weather event and continue to closely monitor the forecast."

The rain is expected to begin Monday night and carry through Tuesday morning. High winds could moderate somewhat by Tuesday evening.

"While the centre of Igor is expected to pass well southeast of the Avalon Peninsula later on Tuesday, it is expected to spread heavy rain across central and eastern portions of the province Tuesday morning," said a statement Monday morning from The Canadian Hurricane Centre.

The centre says Igor's rain bands are expected to interact with a trough of low pressure over Newfoundland, causing huge waves up to three metres in height to the East Coast.

Large ocean swells have already reached Nova Scotia's Atlantic coastline and southern Newfoundland.

Over the weekend, Igor uprooted trees and flooded streets in Bermuda, knocking out power to many parts.

Though the eye of the hurricane passed about 65 kilometres west of the island, it still brought heavy rain and strong winds.

Igor had been a Category 2 hurricane before it hit Bermuda but lost strength and was downgraded around dawn Sunday.

With reports from The Canadian Press