温 暖 前 線(おんだんぜんせん)

おんだんぜんせん

noun

warm front

1. warm front

A boundary at which a mass of warm air moves in and rises over a mass of cooler air. A standard term in weather forecasts and meteorology.

温暖前線(おんだんぜんせん)が近(ちか)づいている。

A warm front is approaching.

温暖前線(おんだんぜんせん)の通過(つうか)に伴(ともな)い気温(きおん)が上(あ)がる。

The temperature rises as the warm front passes through.

明日(あした)は温暖前線(おんだんぜんせん)の影響(えいきょう)で、広(ひろ)い範囲(はんい)で雨(あめ)が降(ふ)るでしょう。

Tomorrow, due to the influence of a warm front, rain is expected over a wide area.

Composed of 温暖(おんだん) (warm, mild) and 前線(ぜんせん) (front line; in meteorology, the boundary between two air masses). A technical term used primarily in weather forecasts. In Japanese TV weather reports, 温暖前線(おんだんぜんせん) is shown on weather maps as a red line with semicircles pointing in the direction of movement. Warm fronts typically bring gentle, extended rainfall, in contrast to the heavier, shorter downpours associated with cold fronts.

Common collocations

温暖前線(おんだんぜんせん)が通過(つうか)する: a warm front passes through
温暖前線(おんだんぜんせん)が近(ちか)づく: a warm front approaches
温暖前線(おんだんぜんせん)の影響(えいきょう): the influence of a warm front
温暖前線(おんだんぜんせん)に伴(ともな)う雨(あめ): rain accompanying a warm front

Related words

寒冷前線(かんれいぜんせん): cold front
停滞前線(ていたいぜんせん): stationary front (often associated with the rainy season)
閉塞前線(へいそくぜんせん): occluded front
前線(ぜんせん): front (meteorological)
気圧(きあつ): atmospheric pressure
低気圧(ていきあつ): low pressure system

Related Words

Antonym: 寒冷(かんれい)前線(ぜんせん) (cold front)

Related: 気圧(きあつ) (atmospheric pressure)

Related: 低気圧(ていきあつ) (low pressure system)

general

Added 2026.4.11 21:54 · Revised 2026.9.2 13:02

23000/23240_ondanzensen