The Thunder Bay Port Authority says the port more than doubled its grain output in June, compared to the same month last year.

A total of 965,000 metric tonnes of grain were loaded onto outbound lake boats and ocean-going vessels.

The authority said this is the strongest June the port has had in 17 years.

Year-to-date, grain shipments are up 35 per cent over 2013 and 18 per cent over a five-year average.

Overall monthly tonnage for the port surpassed 1 million tonnes for the second month in a row, the authority stated in a release. Potash and dry bulk commodities also saw increases over 2013 volumes.

The last time both May and June shipments were more than 1 million tonnes was in 2001, the authority said.

Shipments are expected to remain strong throughout the summer as western Canada's record grain harvest from 2013 continues to move to market.

thunder bay port authority cargo stats