Fetching details from the dictionary...
(weather) front
front line; the front; battlefront; forward area
梅雨前線が停滞している。
The rainy season front is stagnant.
寒冷前線が通過して、急に寒くなりました。
A cold front passed through, and it suddenly became cold.
寒冷前線が通過する予定だ。
A cold front is expected to pass through.