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Jim1348
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Message 58878 - Posted: 20 Oct 2018, 15:08:39 UTC

Although the blob is focused over the Northeast Pacific and the Gulf of Alaska, it has played a substantial role in the development of extreme weather patterns over the Lower 48 when it has formed in the past. Generally, it has been linked to abnormally warm and dry conditions in the West, and cold and stormy conditions in the East.

When the blob is in place, the jet stream, which both divides warm and cold air and acts as super highway for storms, tends to veer north over the top of the blob. This results in a big ridge of high pressure forming over western North America, which brings mild weather and blocks storms.

https://www.msn.com/en-us/weather/topstories/persistent-alaska-warmth-this-fall-has-brought-back-%e2%80%98the-blob%e2%80%99-if-it-lasts-it-could-mean-a-wild-winter-in-the-lower-48/ar-BBOzm4C

I wonder whether CPDN can say anything about this. It is longer than a typical weather pattern (and larger in scale), but shorter in duration than some types of events that CPDN studies.

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Message 58881 - Posted: 20 Oct 2018, 18:27:23 UTC - in response to Message 58878.
Last modified: 20 Oct 2018, 18:33:16 UTC

This link goes to a blog operated by Cliff Mass, a Prof. of Meteorology at U.Washington/Seattle. He often addresses El Nino, La Nina, & 'La Nada' and their association with 'The Blob':
https://cliffmass.blogspot.com/2018/10/the-son-of-blob-is-back.html (archived but no internal search engine).

If you spend much time in his blog, be prepared for careless spelling, etc., I suspect he doesn't tolerate from his students.
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Jim1348
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Message 58883 - Posted: 20 Oct 2018, 20:16:22 UTC - in response to Message 58881.

He certainly stresses the interaction of the atmosphere and ocean conditions, which should be a strength of CPDN. I will look forward to any studies they might do.

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