Refinery problems in Edmonton are leading to empty pumps across Alberta. (Zulekha Nathoo/CBC)

Alberta motorists continued to be plagued by a fuel shortage across the province over the weekend.

A major storm last month forced shutdowns at both Petro-Canada's refinery in Edmonton and Imperial Oil's facility in Strathcona County.

More than 50 Petro-Canada service stations throughout Alberta were out of gas altogether over the weekend.

Petro-Canada spokesperson Sneh Seetal said it is taking longer than expected to recover from the shutdown, but said the company is working to get back up to speed.

"We are curtailing the volume of gasoline delivered so we can equitably allocate what gasoline is available to our customers across the entire province. We are also bringing in product from outside the region," she said.

Seetal said she didn't know how long the shortage would last, but she asked customers to be patient.

"We know this is peak driving season and, although we are doing everything we can to replenish inventory and distribute product to our customers, it will just take time because of the period of high demand that we find ourselves in," she said.