Portland, Seattle and Canada crush all-time heat records for second straight day - The Washington Post

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The most severe heat wave in the history of the Pacific Northwest has climaxed, obliterating scores of long-standing records. The National Weather Service had predicted it would be “historic, dangerous, prolonged and unprecedented,” and it lived up to its billing.

Major cities, such as Portland and Seattle, broke all-time records by enormous margins as temperatures ballooned 30 to 40 degrees above normal.

On Monday, Portland reached 116 degrees, the highest temperature in more than 80 years of record-keeping. It was the third day in a row the city set a new all-time high. Before this weekend, the all-time high was 107, but on Saturday it hit 108 and on Sunday 112.

Seattle soared to a sizzling 108 degrees Monday evening, surpassing the all-time record of 104 degrees set the day before (which topped the previous mark of 103 from 2009). The high of 108 was 34 degrees above the normal high of 74 and higher than the all-time heat record in Washington, D.C., among many other cities much farther to its south.

Medford, Ore., tied its all-time record Monday of 115 degrees.

The extraordinary heat swelled north of the international border as Canada saw its highest temperature recorded for a second straight afternoon on Monday. The temperature in Lytton in British Columbia reached 118.2 degrees just one day after it had surged to a record of 116 degrees. For perspective, this temperature is more extreme than the all-time high in Las Vegas: 117.

Some places on Monday shattered all-time records, which are exceptionally rare and difficult to break, by 5 or even 10-plus degrees. For example, Quillayute, Wash., which hit 110, obliterated its previous all-time high by 11 degrees.

While the siege of excessive heat will finally end in Portland and Seattle Tuesday, additional all-time highs could be set in the interior Pacific Northwest where sweltering temperatures may linger for days, including around Spokane.

“Tuesday will likely be the hottest day in recorded history for many sites across the Inland Northwest,” wrote the National Weather Service in Spokane.

Here are the predicted highs in several major population centers Tuesday along with what the current all-time high temperatures are at those locations:

				Tuesday forecast	All-time high (year)
					116 (2021, set Monday)
					115 (2021, set Monday and in 1946)
					108 (2021, set Monday)
					108 (1928 and 1961)

“The past is no longer a reliable guide for the future. These events are becoming more frequent and intense, a trend projected to continue,” tweeted the Oregon Climate Office.

Meteorologists have described the situation as “insane,” “bonkers” and “incredible.” The Weather Service in Seattle wrote that attempting to forecast heat this extreme is “disconcerting,” because no analogous situation has occurred in the past.

Because of the heat wave’s longevity, new record-long streaks for surpassing different temperature thresholds are also occurring. For example, Seattle experienced triple-digit heat on three straight days for the first time on record.

Officials fear that the intensity and duration of the heat wave will lead to dramatic increases in heat-related illness and possibly fatalities in a region where many lack air-conditioning (more than half the homes in Seattle lack air-conditioning). Heat is the leading cause of weather-related deaths in the United States in a typical year.

Here is a running list of some of the most significant records established:

All-time record highs

All-time highs are the most rare and refer to the highest temperature on record for any month at a given location.

• Portland reached 116 degrees, topping 112 from Sunday and 108 from Saturday. (Before this stretch, the max was 107 from 1981.)
• Seattle reached 108 degrees, topping 104 degrees from Sunday. (Before this stretch, the max was 103 from 2009.)
• Dallesport, Wash., reached 118 degrees, which preliminarily ties the Washington state record.
• The Dalles, Ore., reached 118 degrees, topping Sunday’s 114. (Before this stretch, the max was 111 in 1998 and 1992.)
• Salem, Ore., reached at least 117 degrees, topping 113 from Sunday. (Before this stretch, the max was 108 from 1927, 1941, and 1981.)
• Vancouver, Wash., reached 115 degrees, topping 112 degrees Sunday and 108 on Saturday. (Saturday’s 108 tied a previous mark from 2009.)
• Medford, Ore., reached 115 degrees, tying the mark from 1946.
• Troutdale, Ore., reached 115 degrees, topping 112 Sunday and 109 on Saturday. (Before this stretch, the max was 108 in 1977.)
• McMinnville, Ore., reached 114 degrees, topping 111 Sunday. (Before this stretch, the max was 110 in 1926 and 1925.)
• Hillsboro, Ore., reached 114 degrees, topping 109 Sunday. (Before this stretch, the max was 108 in 2006.)
• Pendleton, Ore., reached 113 degrees, tying 113 in 1961.
• Moses Lake, Wash., reached 112 degrees, tying 112 in 1961.
• Redmond, Ore., reached 110 degrees, topping 108 Sunday. (Before this stretch, the max was 106 in 2008.)
• Quillayute, Wash., reached 110, topping 99 from 1981.
• Olympia, Wash., reached 110 degrees, topping 105 from Sunday, 2009 and 1981.
• Fort Lewis, Wash, reached 110 degrees, topping 104 Sunday. (Before this stretch, the max was 103 in 2009.)
• Renton, Wash., reached 109 degrees, topping 105 in 2019.
• Shelton, Wash., reached 109 degrees, topping 107 Sunday. (Before this stretch, the max was 104 from 2009.)
• Everett, Wash, reached 100 degrees, tying the mark set in 2020.
• Bellingham, Wash., reached 99 degrees, topping 96 in 2009.
• Stampede Pass, Wash., reached 95 degrees after 93 on Sunday tied the high mark from 2004.

• Roseburg, Ore., reached 113 degrees, topping 109 in 2020 and 1946.
• Eugene, Ore., reached 111 degrees, topping 108 from 1981.
• Hoquiam, Wash., reached 103 degrees, topping 95 from 2016.
• Astoria, Ore., reached 101, tying the mark from 1942.

• Several records that were set Saturday were broken again Sunday and/or Monday and are listed above.

Record warm lows

Record warm lows refer to the warmest nighttime or morning minimum temperatures on record. The ones we present here are all-time (any month) cases.

• Seattle’s low temperature Sunday morning of 73 degrees was the warmest on record for any date, topping 72 from 2009. Combined with the 104 high, the average temperature of 89 makes Sunday the hottest daily temperature on record for the city.

June record highs

These are the warmest temperatures observed during the month of June at the given locations. They are rare, but monthly records are easier to break than all-time records.

• Walla Walla, Wash., reached 113 degrees, tying the mark from 2015.
• Yakima, Wash., reached 109 degrees, tying the mark on Sunday and in 2006.
• Klamath Falls, Ore., reached 103 degrees, topping 101 on Sunday. (Before this stretch, the max was 100 from 1992.)
• Alturas, Calif., reached 105 degrees, topping 102 in 1961.
• La Grande, Ore., reached 105 degrees, topping 102 degrees Sunday. (Before this stretch, the max was 99 from 2003.)
• Coeur D’Alene, Idaho, reached 104 degrees, topping 102 in 2015.

• Pasco, Wash., reached 115 degrees, topping 111 in 2015. This also broke the Washington state record for June, but has since preliminarily been topped.

• Several records from Saturday were re-broken Sunday and/or Monday and are listed with that group.

Record streaks

• Seattle hit at least 100 degrees on three straight days for the first time on record Saturday (102), Sunday (104) and Monday (108).
• Portland hit at least 108 degrees on three straight days for the first time on record Saturday (108), Sunday (112) and Monday (116).

Notable Canadian heat records

• Lytton, British Columbia, reached 118.2 degrees Monday, the highest temperature recorded in Canada in any month (surpassing the record of 116 reached on Sunday).
• Kamloops, British Columbia, reached 109 degrees Sunday, the highest temperature recorded there.
• Victoria International Airport, British Columbia, reached 99 degrees Sunday, topping the all-time record of 97 in 2007 and 1941.
• Banff, Alberta, reached 97 degrees Monday, topping the all-time record of 95 in 2005.
• Prince George, British Columbia, reached 100 Monday, topping the all-time high of 97 in 1983.
• Tofino Airport, British Columbia, reached 95 degrees Monday, topping the all-time high of 91 in 1981.
• Watson Lake, Yukon Territory, reached 91.4 degrees Monday, tying the June mark from 2004.

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Portland, Seattle and Canada crush all-time heat records for second straight day - The Washington Post
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