This morning's sounding from Yakutat reported a 500mb height of 5820m - higher than has ever been observed in October through March (data back to 1946). Even in April there's only been one occasion with a stronger ridge, and none in May. Here's a graphic from my simple monitoring page:
And it's a bona fide thaw for much of the North Slope: temperatures are well above freezing across large areas to the north of the Brooks Range. The CRN site at Toolik reported 44°F today, and Ivotuk made it up to an incredible 47°F. The Ivotuk CRN has only been operating since 2014, but this is the warmest observed there between October 5 and May 9.
This is not normal: recent mild and windy weather in the Bering Strait/St. Lawrence Island region has pretty much melted away the earlier snow cover at Savoonga (left) and Wales (right). Thursday early afternoon images courtesy FAA. #akwx @knomradio @Climatologist49 pic.twitter.com/RrGpUBFCvo— Rick Thoman (@AlaskaWx) November 17, 2022