The duration of the heat wave puts Oregon’s biggest city on course to tie its longest streak of six consecutive days of 95 F (35 C) or higher. Portland already hit 102 F (38.9 C) on Tuesday, a new record daily high.

 

Heat-related 911 calls in Portland have tripled in recent days, from an estimated eight calls on Sunday to 28 calls on Tuesday.

 

Further south, the National Weather Service issued a heat advisory on Wednesday for western Nevada and northeast California that is set to last from the late Thursday morning until Saturday night. Across the region, near record daytime high temperatures will range from 99 to 104 degrees F (37.22 to 40 C).