Polar vortex may be on the horizon

Climate researchers are sounding the alarm on a polar vortex that’s predicted to sweep through the U.S.’ east coast later this month and inflict one of the harshest winters in years, The Washington Post reported.

Judah Cohen, a researcher from Atmospheric and Environmental Research, told the outlet his climate models indicate a vortex is likely to hit in late December or early January. A polar vortex disruption occurs when the stratosphere – where most weather occurs – suddenly warms, causing winds to decrease or change direction. The vortex will then be displaced and split apart, spilling cold air into the mid-latitudes.

“Confidence is growing in a significant PolarVortex disruption in the coming weeks. This could be the single most important determinant of the weather this winter across the Northern Hemisphere,” Cohen wrote on his blog and Twitter feed last week.

Last year a vortex that originated in Eurasia swept eastern North America, causing windstorms that lasted weeks.

“We were still feeling the impacts into the end of April,” Cohen said.

More

https://ift.tt/2R6z3x2

from Salisbury News https://ift.tt/2CpZOog