Some readers will already be aware, but for those who aren't: Rick Thoman has started a Substack newsletter/blog focused on Alaska and Arctic climate:
There's a lot to talk about these days in Arctic weather and climate, and Rick (who started the Deep Cold blog) is a preeminent expert, so be sure to sign up for the subscription feature.
Thermometers have registered a sharp drop in the past few days for much of Alaska, with the first -40° showing up on Monday evening at Arctic Village. The temperature subsequently dropped to -45°F, but the cold snap didn't last long.
Chicken also saw -40° this week, which is right on schedule for the time of year. In the Fairbanks area, UAF's Smith Lake site reached -30°F.
On the other side of the pendulum, the North Slope has been extremely warm again, with Utqiavik reaching +29°F yesterday - very close to record warmth for the time of year.
The briefly sharp cold spell for interior areas has finally brought freeze-up to Dawson over in the Yukon Territory, judging from the webcam. Here's a video showing today's scene, courtesy of http://dawson.meteomac.com/
The Tanana River at Nenana appears to still have open water, but not much: