On-going stratospheric warming
The likely warmup next week should only be a temporary event as an on-going stratospheric warming event in the polar region of the northern hemisphere enhances the chance for additional cold air outbreaks during late January and February across the central and eastern US. The polar vortex has split into two vortex centers during just the past couple of days and this is the second time this “split” has occurred during the last couple of weeks. The impact of stratospheric warming in the northern hemisphere’s polar region can take up to several weeks before it impacts temperature patterns across the central and eastern US; hence, likely cold air outbreaks coming during the month of February.
Meteorologist Paul Dorian
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