![]() That was the longest period of temperatures over 100 degrees recorded in the city. Spokane, Washington, recorded high temperatures at or above 100 degrees for six consecutive days back in July 1928. Not only will PDX likely set the warmest temperature for June 26th & June for that matter, but the all time record temperature of 107☏ remains in serious jeopardy. The Portland NWS office says the Portland airport will probably record the highest temperature ever for the month of June and could break the all-time high of 107 degrees Fahrenheit.Ī high temperature of 103 degrees is forecast for Sunday and Monday at the Seattle-Tacoma airport, where a temperature above 100 has only been recorded twice – in July of 20.Ī number of Portland Airport high temperature records are in jeopardy this weekend. Residents of large metropolitan areas like Portland and Seattle will be working up a sweat. The circulations within the heat dome allow temperatures to increase quickly and within a fairly confined region.įactoring in the longest days of the year and drought conditions, high temperatures are expected to break records beginning Saturday and lasting through at least the middle of next week, the WPC said. “Imagine a swimming pool when the heater is turned on - temperatures rise quickly in the areas surrounding the heater jets, while the rest of the pool takes longer to warm up,” the National Oceanic and Atmospheric Administration (NOAA) says. High pressure dome centered over the Pacific Northwest this weekend. Hot air rises, but the high pressure acts as an atmospheric lid – forcing the hot air back to the surface where it is heated even further. “Nighttime temperatures are only expected to briefly cool into the 70s throughout the lower elevations, which can significantly increase the threat for heat related illnesses,” the WPC said.Īs a large ridge of high pressure moves northward over the Northwest this weekend, a heat dome has formed, essentially acting as an oven to bake the region for an extended period of time. Heat of this magnitude can be extremely dangerous if proper precautions aren’t taken,” warns the Weather Prediction Center (WPC).Įxcessive heat warnings are issued when extreme temperatures persist for an extended period with little nighttime relief. “Excessive heat warnings have been issued for nearly all of Washington and Oregon, as well as much of Idaho and northern California. ![]() (AP Photo/Elaine Thompson, File) Elaine Thompson/APĮxtreme heat will be more frequent in the Pacific Northwest. 1, 2017, file photo, store greeter Danny Olivar, right, lends a hand to a customer to heft an air conditioning unit from a rapidly declining stock at a Home Depot store ahead of an expected heat wave in Seattle.
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