A polar vortex is set to bring winter conditions to the eastern United States by next week, with meteorologists predicting freezing temperatures and storms affecting nearly half the country. The Arctic air mass is descending from Greenland and northern Canada and is expected to arrive by Monday (November 10).

Forecasters predict that temperatures will fall more than 20 degrees below normal across the East, with freezing conditions reaching into the Deep South and highs only in the 30s and 40s across northern and central Florida. The average November temperatures in the eastern U.S. vary widely, with highs typically ranging from the low 50s in the Northeast to the 60s in the Southeast. Overnight lows usually drop from the 30s in the north to the 40s or 50s in the South.

This early-sea

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