From: LC
The Gulf Of Alaska Low. The Grand Banks Vortex. The Subtropical Jet Stream. Pray they never meet!
You cannot help but notice the vigorous southern branch wind field, which is riding over the big subtropical high in Florida. This feature has its origins in the equatorial Pacific Basin below Hawaii (it is not tied to the Madden-Julian Oscillation, the convective response of which is located much further west). We have seen in the past (you remember last February, right?) that when the STJ phases with polar and Arctic streams, the results can be cold, cruel, and damaging.
There is a -chance- for a triple phase over the eastern third of the USA around December 23 - 26, possibly giving rise to a huge mAk Grand Banks vortex (below Newfoundland). And perhaps again December 31 - January 3 just a bit further south and east. I am following the usually mild, progressive GGEM series for the next 16 days, which has the blocking signatures in the Gulf of Alaska and Greenland. And brings cold air the farthest south into the lower 48 states, at times touching the Tennessee Valley and the Carolinas.
Now if you live in the south central states or Dixie (sorry, Texas...) you will be bypassed by the winter weather. The Midwest and Northeast stand to see the best chance for snow and ice (not a sure thing, but at least better odds than the southern and central tier. The Intermountain Region should see plenty of frozen precipitation, largely west of the Continental Divide. Alberta and Saskatchewan may have to endure routine bitter cold, with snow and wind events, until the January Thaw shows up around 1-10-2022.
The good news is January Thaw starts on 10th! Lol
Sent from my iPhone using Tapatalk
The Gulf Of Alaska Low. The Grand Banks Vortex. The Subtropical Jet Stream. Pray they never meet!
You cannot help but notice the vigorous southern branch wind field, which is riding over the big subtropical high in Florida. This feature has its origins in the equatorial Pacific Basin below Hawaii (it is not tied to the Madden-Julian Oscillation, the convective response of which is located much further west). We have seen in the past (you remember last February, right?) that when the STJ phases with polar and Arctic streams, the results can be cold, cruel, and damaging.
There is a -chance- for a triple phase over the eastern third of the USA around December 23 - 26, possibly giving rise to a huge mAk Grand Banks vortex (below Newfoundland). And perhaps again December 31 - January 3 just a bit further south and east. I am following the usually mild, progressive GGEM series for the next 16 days, which has the blocking signatures in the Gulf of Alaska and Greenland. And brings cold air the farthest south into the lower 48 states, at times touching the Tennessee Valley and the Carolinas.
Now if you live in the south central states or Dixie (sorry, Texas...) you will be bypassed by the winter weather. The Midwest and Northeast stand to see the best chance for snow and ice (not a sure thing, but at least better odds than the southern and central tier. The Intermountain Region should see plenty of frozen precipitation, largely west of the Continental Divide. Alberta and Saskatchewan may have to endure routine bitter cold, with snow and wind events, until the January Thaw shows up around 1-10-2022.
The good news is January Thaw starts on 10th! Lol
Sent from my iPhone using Tapatalk
