The DC region is mostly near the rain-snow line. Here's why.
What's New in Forecast
- Models continue to struggle with strength A storm develops in the mid-Atlantic and slides south of New England. The US GFS model has a slightly farther offshore and weaker low. The European model, meanwhile, depicts a close track of a strong low-pressure system, but close passages typically mean warmer air being pulled inland from the ocean and more rain than snow near I-95. However, a stronger storm system in that scenario could lead to more precipitation, which could help cool the lower atmosphere and increase snow in some areas.
- Both major weather models now agree on a sharp transition zone between rain and snow near Interstate 95 south of New York City from Washington. Along and east of I-95, more rain than snow is possible. Thirty to 60 miles to the northwest, the chance for significant snowfall increases.
- Models are converging on the idea of an early period of snow in parts of the Mid-Atlantic, mainly west of I-95, as the storm begins Saturday. It will only last for a few hours, but there may be enough snow to disrupt travel for a while. After that, precipitation may change to rain at lower elevations.
Time and possible totals
Washington will end up on the wetter side of the rain-snow line