Snow showers before 3am, then a chance of snow, mainly between 3am and 5am. Low around 22. Calm wind becoming northwest 5 to 9 mph after midnight. Chance of precipitation is 90%. …

Otherwise, snow typically melts seasonally, causing runoff into streams and rivers and recharging groundwater. Major snow-prone areas include the polar regions, the northernmost half of the …

2 days ago · First big snow storm to hit US as polar vortex sends coldest air yet A long-awaited blast of cold air, courtesy of the polar vortex, will overtake much of the US, but the forecast …

1 day ago · Snow, the solid form of water that crystallizes in the atmosphere and, falling to the Earth, covers, permanently or temporarily, about 23 percent of the Earth’s surface.

1 day ago · Note: these data are unofficial and provisional. Zip codes (where available) of observations will be included in text files after October 7, 2008.

Explore national winter weather forecast maps and cities impacted by snow and ice. Our 24-hour snowfall forecast feature displays an interactive map prediction of snowfall accumulation over...

What is snow? Snow is precipitation that forms when water vapor freezes. It is not frozen rain, but a crystallization of ice that typically forms in clouds.

Snowfall reports, interactive snow map, winter alerts, top snowfall, and live road cameras.

23 hours ago · Unlike the early December storm, this one saw higher snow accumulations, in general, closer to the Maryland line than north of the turnpike.

1 day ago · A First Alert was in effect as a winter storm brought snow across the Philadelphia region Saturday night into Sunday morning.