Aug 10, 2017

Record Pacific Northwest Heat Wave Finally Ends This Weekend

Seattle, WA
USA
by
Jon Erdman
,
The Weather Channel
This map shows a pronounced area of much stronger-than-normal high pressure aloft (orange, red contours) near the Pacific Northwest from July 22 to Aug. 7, 2017, responsible for the excessive heat and dry weather. Image: NOAA/ESRL Physical Sciences Division
This map shows a pronounced area of much stronger-than-normal high pressure aloft (orange, red contours) near the Pacific Northwest from July 22 to Aug. 7, 2017, responsible for the excessive heat and dry weather. Image: NOAA/ESRL Physical Sciences Division

At a Glance

Much of the Pacific Northwest has sweltered in a prolonged heat wave since late July.

This has set some all-time heat wave longevity records in a few locations.

A major pattern change is ahead the weekend of August 12-13.

This will bring much cooler temperatures, even the chance of rain in some areas.