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North Atlantic warming hole impacts jet stream

— posted on Apr 16, 2019 09:06 AM

The North Atlantic warming hole (NAWH). "It's called a hole because there is a lack of warming," said Melissa Gervais, assistant professor of meteorology and atmospheric science, Penn State

A 2-week weather forecast may be as good as it gets

— posted on Feb 25, 2019 12:17 PM

Last month, as much of the United States shivered in arctic cold, weather models predicted a seemingly implausible surge of balmy, springlike warmth. A week later, that unlikely forecast came true.

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