A storm will rapidly intensify off the Middle Atlantic seaboard today, bringing blizzard conditions to the Middle Atlantic region and southern New England, including the major cities from Baltimore to New York City.

So you know what to expect with blizzard conditions, it is defined as having a wind of 35 mph or greater and snow reducing visibility to less than 1/4 of a mile for more than three hours. The combination of strong winds and heavy snowfall today will cause some roads to become impassable as the snow quickly accumulates and drifts. Snow drifts could reach 4 feet in many areas by tonight.

Motorists who are brave enough to travel will encounter whiteout conditions and very slick, snow-covered roads throughout the day and into the evening. One major roadway that will be slowed to a crawl will be Interstate 95 from Baltimore to New York. In addition to blowing and drifting the snow, the winds could down snow-laden trees and power lines.

Combined with bitterly cold air, the wind will send AccuWeather RealFeel temperatures plummeting into the lower teens today.

Story by AccuWeather.com Meteorologist Adam Douty.