A significant winter storm is set to impact the Northeast this weekend, with the Philadelphia and Pittsburgh regions bracing for heavy snowfall. Forecasts predict snowfall totals between 8-12 inches for Pittsburgh, while Philadelphia could see over a foot of snow. Alerts have been issued across Eastern Pennsylvania, with meteorologists increasing confidence in a major storm that may compare to past severe winters. Communities are preparing for harsh conditions, and local authorities are advising residents to stay home due to expected dangerous travel conditions. As temperatures plummet and arctic air moves in, outdoor activities could be severely disrupted, prompting a look back at historic snowfalls in the area.