* WCS for June delivery in Hardisty, Alberta, traded $12.40
to $12.80 a barrel under the benchmark, according to brokerage
CalRock. On Friday, the Canadian heavy benchmark had ended
$12.80 a barrel below WTI.
* Benchmark Canadian heavy crude prices have tightened to
multi-month highs on concerns about wildfires in Alberta that
forced some producers to shutter production.
* "Definitely production is still impacted and it could get
worse," an industry source said.
* Limited refinery turnarounds are expected, keeping crude
supplies tight, the source added.
* Prime Minister Justin Trudeau visited Alberta as raging
wildfires prompted mass evacuations in Canada's main
oil-producing province, where meteorologists expect virtually no
rain for about 10 days.
* Global oil prices rose a dollar a barrel on the prospect
of tightening supplies in Canada and elsewhere, although
recession fears kept the market pressured. (Reporting by Rod Nickel in Winnipeg
Editing by Vinay Dwivedi)
