Record highs set in the U.S West in June 2015. These locations tied or broke their all-time June record highs. Graphic: The Weather Channel

30 June 2015 (The Weather Channel) – A torrid heat wave is easing a bit, but will kick into high gear yet again later this week into the July 4th holiday weekend, and possibly beyond.

June record highs have been broken in at least 31 cities in the Northwest, five of which appear to have tied or broken their all-time record highs. The extreme heat is likely to last into next week and may end up breaking records for longevity as well.

An unofficial weather station located in Hell's Canyon along the Oregon/Idaho border (Pittsburg Landing) recorded an incredible 116 degrees for a high Sunday. 

The culprit in this hot setup is a dome of high pressure aloft, surging northwestward to encompass a large area of the western states. The center of this high will shift around through the week ahead, but overall it will remain a dominant feature.

This will allow the sizzling late-June and early-July sun to send temperatures soaring not simply in the typically hot Desert Southwest, but also locations well to the north including the Pacific Northwest, interior Northwest, and northern Rockies. 

Highs well into the 90s and triple digits are expected in many lower-elevation locations west of the Continental Divide and inland from the Pacific Coast.

This includes much of Nevada, California's Central Valley, the Salt Lake Valley, Idaho's Snake River Plain, much of Oregon's lower elevations east of the immediate coast, and areas to the east of the Cascades in Washington State.

In particular, parts of the Columbia Basin and lower Snake River Valley will see particularly extreme and persistent heat. This includes cities such as Yakima, Kennewick and Walla Walla in Washington as well as Lewiston, Idaho, as noted in the records below. Temperatures will get knocked down a bit into the 90s or low 100s to start the new workweek, but will then surge towards the middle or upper 100s again late in the week.

The extreme heat has even surged north into Canada. Cranbrook, in far southeast British Columbia at an elevation of about 3,000 feet, set a new all-time record high of 98 degrees (36.8 degrees Celsius) Sunday, according to The Weather Network

Even Revelstoke, British Columbia – 130 miles north of the U.S. border, about 1,500 feet above sea level and better known for skiing – reached an amazing 103 degrees (39.5 degrees Celsius) Sunday. [more]

Western Heat Wave Shatters At Least 31 June Record Highs (FORECAST)



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