Record Late-Week Heat For Seattle, Portland, Medford
By By Brian Edwards, Meteorologist
August 18, 2012, 3:53:52 AM EDT
A brief bout of record-smashing heat is set to ascend on the Pacific Northwest Thursday and Friday before a slight cooldown this weekend.
Seattle did not reach the 90-degree mark once during the summer of 2011, and they've already had two 90-degree-plus days this August.
Another bout of 90-degree weather is set to affect Seattle while Portland, Ore., rises over the century mark for the second time this summer.
The cause of the heat wave is a large ridge of high pressure which is currently centered over the Desert Southwest. As a strong front brings a fall-like air mass into the Great Lakes and Upper Midwest, the aforementioned ridge will pump into the Pacific Northwest sending temperatures soaring Thursday and Friday.
On Thursday, temperatures will soar into the middle to upper 90s from Wenatchee and Seattle, Wash., to Pendleton and The Dalles, Ore.
Over 100-degree heat will be felt throughout a good chunk of western Oregon away from the coast from Portland to Eugene and Medford. The record highs for the date are expected to be approached or broken in many of these cities.
Below is a table of forecast high temperatures and the records for the date:
|City||High Thurs. (Record/Year)||High Fri. (Record/Year)|
|Medford, Ore.||108 (107/1977)||109 (105/1992)|
|Seattle, Wash.||95 (98/1967)||94 (96/1977)|
|Portland, Ore.||101 (102/1977)||101 (105/1977)|
Luckily for residents and visitors to the Pacific Northwest, the heat won't last all that long. By Saturday, a storm off the West coast will slide into the Northwest and British Columbia, knocking down the extreme heat.
Further cooling is expected Sunday into early next week.
However, do keep in mind that you only need a day or two of extreme heat and low humidity to lead to a high threat of wildfire development.
One firefighter was killed over the weekend in Idaho while trying to battle one of the western blazes.
Fire season is peaking over the West with several big blazes over California, Nevada, Utah, Idaho and Montana.
Washington and Oregon have been spared thus far, but if any fires ignite Thursday or Friday, conditions will be ripe for quickly spreading flames. This is especially true in some of the higher elevations and valleys to the east of the Cascades where the relative humidity values will be lowest in the afternoon.
Stay tuned to AccuWeather.com over the next few days as we continue to monitor the extreme heat coming to the Northwest.
Comments that don't add to the conversation may be automatically or manually removed by Facebook or AccuWeather. Profanity, personal attacks, and spam will not be tolerated.
More Weather News
Weather News - July 16, 2019, 10:08:47 AM EDT
Heavy rainfall has triggered deadly flooding and mudslides across parts of Nepal and northern India in recent days and more rain is on the way.
Weather News - July 16, 2019, 9:58:35 AM EDT
In the wake of Barry's rain and flooding, a broad area of heat and high humidity will take hold over much of the southern and central United States for the balance of this week.
Weather News - July 16, 2019, 9:21:07 AM EDT
Fifty years after Apollo 11 astronauts were first to walk on the moon, the United States and the world are celebrating the historic achievement, while many also lament that moon missions ended decades ago
Tropical Storm Danas to bring flood risk to Philippines, Taiwan; China, South Korea and Japan remain on alert
Weather News - July 16, 2019, 8:02:55 AM EDT
Residents from the northern Philippines to Taiwan are being warned that a new tropical system will threaten the region the next several days.
Weather News - July 16, 2019, 9:18:34 AM EDT
The answer to that question lies with the jet stream and what's circled in red in this water vapor satellite image, AccuWeather Chief Meteorologist Bernie Rayno explains.
Weather News - July 16, 2019, 7:53:03 AM EDT
The world's oldest golf championship returns to Northern Ireland for the first time in 68 years and the weather may be a factor in the outcome.
Weather News - July 16, 2019, 8:26:26 AM EDT
As Barry pushed north across the interior U.S., it weakened into a tropical rainstorm and continued unleashing precipitation. One place racked up more than 23 inches of rain.
Weather News - July 16, 2019, 2:03:32 AM EDT
Aside from downpours and thunderstorms associated with Barry, the only area at risk for periodic severe thunderstorms will be across the northern tier of the central United States through midweek.