大雪

1. Origins, structure, and basic meaning

• Structure: 大雪 is read as おおゆき and means “heavy snow” and “snowstorm”.
• Basic usage: It describes a school closure caused by heavy snow and a forecast of a snowstorm beginning at night.

2. Common pitfalls and similar expressions

• 大雪で / 大雪になる
  • Use 大雪で to mark the cause and 大雪になる for the forecasted change in conditions.