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Arctic Front Wednesday to Flip Rain to Snow, Unleash Lake-Effect and Dangerous Cold

Forecast impacts hinge on the rain-to-snow timing plus narrow lake-effect bands, with model disagreement in some corridors.

Overview

  • A strong front arrives Wednesday, sending temperatures tumbling and switching widespread rain to snow or a brief wintry mix from the Midwest to the Mid-Atlantic.
  • Great Lakes communities face snow squalls and lake-effect bands with localized heavy totals; parts of Berrien County, Michigan could exceed six inches and wind chills near zero will threaten travel.
  • In many areas including Washington, D.C. and south-central Pennsylvania, marginal temperatures and warm ground should limit accumulation to little or none despite late-day flakes.
  • Northeast Alabama is favored for a cold rain ending as flurries, though a less-likely GFS scenario shows roughly a half-inch of snow, prompting forecasters to stress monitoring updates.
  • Gusts near 30–35 mph will accompany the front, producing blustery conditions and dangerous wind chills, with elevated fire danger flagged in dry parts of South Texas.