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 …

4 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 says the low ...

3 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.

Snow forms when the atmospheric temperature is at or below freezing (0°C or 32°F). If the ground temperature is at or below freezing, the snow will reach the ground. However, the snow can still …

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 why it …

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

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 of melting snow …