Beneath the core of a super cold arctic high, the temperature plunged to a bone-chilling -55 degrees at Rabbit Kettle, NWT this morning while many surrounding locales stretching from eastern Alaska to southeast Yukon dropped below -40. That’s a January-like air mass even by this typically cold, snowy region at this time of year and this air mass will bodily shift south, southeast over the next 5 days. By Sunday into Monday the core of the cold will be centred over the Northeast where temperatures from Washington up to Boston will struggle to even reach freezing. By Saturday though, temperatures won’t get out of the 10s in the Twin Cities, low to mid-20s in Chicago Sunday. Impressive given that we’ve not yet hit Thanksgiving.
Check out these numbers from this morning up over frigid Northwest North America.
The thermometer dropped to -31 at Fairbanks, AK and barely warmed through the day today. Here’s a view from the arctic cam just after sunset this evening.
Further south and it wasn’t much warmer, in fact, Edmonton dropped to at least -32C or -26F this morning. The all-time record for November here is -35.6C or -32F.
As you can see it looked as cold as it felt in Edmonton today, brrr.
The arctic air is now being felt over the barbed wire fence in Montana. Check out the latest numbers as of early this evening.
Tonight’s lows according to TWC.
For you folks living in the Plains, Lower Midwest and entire Eastern Seaboard, make the most of the relative mild over the next few days, it’s coming!
As the big 1048+mb high drops south, a surface low will develop on the southern edge and so one can expect a spell of snow from New Mexico up towards the Great Lakes and eventually lake-effect will kick in once the air mass comes down. Heavier snow will break out over the Colorado Rockies where 2+ft is expected.
Here’s the GFS surface map for the next few days as the arctic air dives into the country.
On Friday, snows will break out further south as the blue norther sweeps into Texas. We could see it snow all the way down to the Mexican border with accumulations in Lubbock and Amarillo where daytime temperatures won’t get out of the 20s following 60s and 70s the previous day.
I wouldn’t be surprised if overnight lows drop into single digits all the way to Texas Friday night, especially with any snow cover.
As the 1048mb core drops into North Dakota and the arctic air free flows south and east across the country, here comes the lake effect as winds begin to blow out of the NNE.
The really cold stuff arrives from Minneapolis to Indy Saturday-Sunday where highs will struggle to get out of the 10s and low 20s.
Saturday highs. Probably conservative!
By Sunday, the core sits over the Ohio Valley and Northeast. After low to mid-20s overnight, the major cities stretching from DC up to Boston will have a tough time getting out of the 20s through the day, perhaps peaking right around 32 late afternoon.
Next week is of course Thanksgiving and MANY will be wondering what the weather has in store. While it’s too early to say whether it’s going to snow in your backyard, what I can see is, it’s going to be darn COLD!
Here’s the CPC 6-10 day temperatures. Another lobe of arctic air will come south.
Check out the GFS surface for next Wednesday. Notice more arctic air crosses the Great Lakes but also and perhaps more importantly, notice the coastal system that tries to wind up. The models continue to support a potential coastal low and snowstorm.
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