Why are there many snowstorms in winter in western Europe?

1. Because the direct point of the sun moves south in winter and the westerly belt in the northern hemisphere moves south, the area affected by the westerly belt in western Europe is expanded;

2. The westerly belt comes from the ocean and is rich in water vapor;

3. The winter temperature is low, and the west wind rich in water vapor is more likely to form snow;

4. In addition, western Europe is flat, so it is difficult to prevent the west wind from going deep and play a boosting role.