These dips in upper-level winds tend to move along at a relatively steady clip, swooping in with cold temperatures for a day or two before the pattern readjusts and conditions moderate again. There are also upper-level lows, which are essentially pieces ...
A polar vortex can quickly send mild winter weather into dangerous negative temperatures. Learn everything you need to know about the dreaded polar vortex.
What Is This Polar Vortex That Is Freezing the U.S.?Mark Fischetti
Resource Link: Polar vortex moving off the top of the globeAs the Polar Vortex weakens and undergoes the “final warming" of the season this must mean that Winter is all done, right? Not yet! Read the article below about what the Great Lakes region can expec...
"When warm air rushes the North Pole in a sudden stratospheric warming event, the temperature difference slackens and can even reverse and so the polar vortex weakens and moves south," he said. It's not especially unusual for the polar vortex to break down, according to Popular Science. ...
Where are the polar jet streams located? What is the average temperature in Antarctica in January? Do polar jet streams move south? How does the Tropical Easterly Jet stream form? How cold is the Southern Ocean? What layer of the atmosphere is the jet stream in?
The weakened polar vortexcan now nudge the jet stream(an extremely influential band of powerful winds that separates colder northern air from warmer southern air, somewhat like a barrier). When these sinking winds push the jet stream down south, it "opens the Arctic fridge," so to speak, all...
What is the polar vortex? Jake Hukee // Shutterstock What is the polar vortex? In January 2019, parts of the Midwest experienced a cold snap that plunged temperatures well below -20 degrees Fahrenheit. The “polar vortex,” a mass of frigid air that is usually over the Arctic, was to ...
This swirling mass of air above the Arctic can grow and bend, pushing blasts of frigid air south.
(possibly as large as hen eggs north of I-64 in Illinois) & a few tornadoes are also possible with a complex of storms expected to move thru from west to east. The bulk of the storms may remain along & north of the Ohio River (in the ENHANCED risk area) with lower chances south ...