Snow, snowfall, or snow flurries is a natural phenomenon, similar to rain but consisting of tiny ice crystals.
Snow typically appears in temperate regions during winter.
Winter brings a wave of cold across various regions. This chill is caused by cold, dry air masses descending from the north with great intensity. When the leading edge of this cold air encounters warm, moist air from the south, the heavier cold air forces the warm, moist air upward. This causes the water vapor in the warm air to quickly condense and form ice, gradually leading to snowfall.
Before the arrival of the cold air, the warm and moist air from the south is generally still strong, resulting in relatively mild weather. As water vapor condenses into snow, it releases a certain amount of heat, preventing the weather from becoming too cold before and during the snowfall.
Once the core of the cold air passes, the clouds dissipate, and the snowfall stops, the weather immediately brightens as the sky clears. The ground then radiates a significant amount of heat, causing the temperature to drop sharply. Experimental data shows that 1 gram of ice at 0°C absorbs 334.4 joules (equivalent to 80 calories) when it melts into water at 0°C. Therefore, when a large amount of snow melts, the absorbed heat is substantial, making the weather feel colder.
