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 …

Dec 14, 2025 · 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.

Snow is precipitation that forms when water vapor freezes. Snow falls as ice crystals from clouds when temperatures drop below freezing and there is enough humidity in the air.

Feb 10, 2025 · Snow is more than a winter spectacle; it’s a fascinating natural phenomenon with important roles in the environment. This article breaks down how snow forms, its types, and …

Your trusted source for the most accurate weather forecast, snow report, high-resolution weather maps, and ski conditions information.

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

Jul 1, 2025 · Snow and ice also cool Earth’s surface, helping stabilize the climate system by reflecting sunlight back to space. NASA’s observations help scientists learn about the effects …

Welcome to the National Water and Climate Center's Snow and Water Interactive Map, a groundbreaking tool designed to provide farmers, researchers, policymakers, and water …

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...

Dec 12, 2025 · 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 …