Crazy LATE November heat (81F Denver, 86F Lamar) to carry into December but cold turn expected!

It’s turned crazy warm over the Western interior and Plains thanks combination of dry ground, lack of snow and a digging trough bringing snow to the Sierra Nevada and strong downsloping SSW over the Front Range.

Credit: Tropical Tidbits

Denver climbed to a new November benchmark of 81 degrees this afternoon besting the previous record of 80 degrees set back on 8th Nov 2006 and 10 years later on the 16th just last year. What’s amazing is that this new record was achieved so late in November. Most record highs outwith summer occur typically early month.

Even more impressive was the heat out on the Colorado plains where Lamar hit 86 degrees!

Denver is among countless other cities which set new highs today!

Coolwx.com

December is poised to open exceptionally warm across much of the Lower 48 with many more record high mins and maxs likely to fall but most models show a dramatic flip by mid month in response to the strong -AO/NAO and consequential build-up of high latitude blocking.

The CFSv2 7-day mean 500mb height anomaly shows the flip.

Credit: Tropical Tidbits

Credit: Tropical Tidbits

Credit: Tropical Tidbits

2M temp anomaly

Credit: Tropical Tidbits

Credit: Tropical Tidbits

Credit: Tropical Tidbits

I’m liking this for the week between Christmas and New Year!

Credit: Tropical Tidbits

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