SEATTLE (AP) - Each day, more deaths are being linked to the heat wave that struck the Pacific Northwest last week, with medical staff who treated people overwhelmed by temperatures well above 100 degrees Fahrenheit saying the toll from the extreme weather will keep creeping up.

Hundreds of deaths were being investigated as heat related in Oregon, Washington state and British Columbia. The dangerous heat began June 25 and only began to subside in some areas on June 29.

The death toll in Oregon alone has reached at least 95, the state medical examiner said on July 2, with most occurring in M...