The most frequently used methods to map and measure snow extent, snow depth and snow water equivalent employ multiple inputs on the visible–infrared spectrum to deduce the presence and …

21 hours ago · Bitter cold and snow are sweeping nearly half the country Friday, with 18 million people under cold weather alerts ahead of the holiday weekend. As many as 10 million more are under …

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...

2 days 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.

Feb 26, 2025 · Specific (deterministic) snow accumulations for locations in the United States can be obtained from the National Weather Service's National Digital Forecast Database. NCEP monitoring …

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

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.

Dec 25, 2025 · The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will …

Partly cloudy skies during the evening will give way to cloudy skies overnight. Low 42F. Winds SE at 5 to 10 mph. Overcast with showers at times. Low 33F. Winds NNE at 5 to 10 mph. Chance of rain...

Nov 28, 2025 · Snowfall patterns are shifting as the climate warms, with many regions already seeing declines. These shifts impact water supply, ecosystems, winter recreation and hydropower …