After talking about it for days, former Typhoon Nuri is ‘bombing out’ over the Bering Sea this morning, said to have a CP of 924mb which breaks the old record of 925mb set in Dutch Harbour back in Oct ’77. This is forcing a staggering height rise over the arctic, splitting the polar vortex and by doing so, a branch of the main vortex is set to pile drive the coldest air in the hemisphere south into the United States.

This could be a top 5 early/mid November cold outbreak for the US!

Yesterday

[s2If current_user_can(access_s2member_level1)]

Check out these off the scale height rises over the arctic region with a chunk of the PV present over the Lower 48!

Ahead of the major cold outbreak, we’re talking about a MAJOR early season snowstorm across the Northern Tier!

Latest GFS snow chart through 120 hours.

ECMWF

Weather Channel’s snow forecast!

AccuWeather

Then here comes the arctic air!

Both ECMWF drive surface pressure to around 1050mb with this high!

ECMWF

This will deliver the coldest air yet and probably one of the coldest early/mid November cold blasts in many years!

How Cold?

Expect 15-30 below normal WIDESPREAD down the Rockies and Plains this week.

-20s expected over Montana and Wyoming.

2-metre temp

Tue AM

Wed AM

Thu AM

Below 0 Friday AM in the Twin Cities?

See video for discussion!

[/s2If][s2If current_user_cannot(access_s2member_level1)][magicactionbox id=”18716″][/s2If]