Weather Talk: A primer on how polar vortexes affect weather

The polar vortex just isn’t a storm. It’s the everlasting circulation sample that surrounds the poles of the Earth. A number of occasions a yr, the northern polar vortex transitions between stronger and weaker phases. When the polar vortex is constructive, excessive strain is stronger over the polar area which retains the overall circulation comparatively flat in order that climate techniques transfer kind of in a west to east trend. This retains the coldest air locked up within the excessive latitudes. When the polar vortex goes damaging, the movement across the pole will get wobbly, which permits intrusions of Arctic air into the mid-latitudes which incorporates locations like Fargo-Moorhead. The polar vortex has gone destructive this week and, positive sufficient, our delicate climate is popping colder.

John Wheeler

John was born in Baton Rouge, LA, and grew up close to Birmingham, Alabama. As a youngster, his household moved to Madison, Wisconsin, and later to a small city in northeast Iowa. John traces his early curiosity in climate to the distinction in local weather between Alabama and Wisconsin. He’s a graduate of Iowa State College with a level in meteorology. Like several meteorologist, John is intrigued by extremes of climate, particularly arctic air outbreaks and winter storms.  John has been recognized to say he prefers his summers to be scorching however in winter, he prefers the chilly.  When away from work, John enjoys lengthy-distance operating and studying.  John has been a meteorologist at WDAY since Might of 1985.

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