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Sea-Tac Airport notes record November dry spell –
Puget Sound abnormally dry with moderate drought conditions!

Latest drought monitor.
Credit: KING 5 TV News, NBC Seattle.

Seattle sees longest November dry stretch in 22 years

The past two weeks have tied November 2000 for the longest November dry stretch at Sea-Tac.

From KING 5 TV News:

November in the Pacific Northwest in any given year is typically one of the wettest months of the year. At Sea-Tac, it is the wettest month of the year.

The month of November averages 6.31 inches of rainfall but this November, Sea-Tac has only received 1.67 inches so far, making it one of the driest Novembers recorded, and Sunday ties for the longest November dry stretch ever recorded at the airport.

Why it’s so dry this November

This dry weather is quite unusual for this time of the year. The pattern features an unusually strong area of blocking high pressure keeping skies clear and delivering dry conditions. These strong areas of high pressure create sinking air and also help steer storm systems away from the Pacific Northwest.

After a wet first half of the year, the second half of the year has been quite dry. Much of western Washington remains abnormally dry with moderate drought conditions for most of Puget Sound into the western foothills of the Cascades.


If Sea-Tac misses out on the rain Monday, it would mark 14 consecutive days of no measurable rain, placing 2022 as the longest November dry stretch since records have been taken at the airport.

Posted by Steve on November 21, 2022 at 12:26 pm | Permalink

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