Definition

1. Noun:
   • A warm, dry wind that descends the leeward side of a mountain range: A foehn is a specific type of wind characterized by its warmth and dryness, which occurs as air descends after crossing a mountain barrier. This process causes the air to warm adiabatically (by compression), often leading to a rapid temperature rise and a drop in humidity on the downwind side.

Examples of Usage

• Noun:
  • The sudden warm foehn melted the snow on the valley floor.
  • Meteorologists issued a warning for strong foehn winds in the alpine regions.
  • The characteristic dryness of the foehn can increase the risk of wildfires.

Advanced Usage

• "Foehn effect" or "Foehn phenomenon": The meteorological process that creates a foehn wind.
  • The rapid snowmelt was caused by the Foehn effect.
• "Foehn wall": A bank of clouds that can form on the windward side of the mountains, often associated with the arrival of a foehn.
  • We could see the imposing foehn wall building over the peaks.

Variants and Related Words

• Föhn: An alternative spelling, commonly used in German and scientific contexts.
  • The Föhn is a well-known feature of Alpine weather.
• Chinook: A similar type of warm, dry wind that occurs on the leeward side of the Rocky Mountains in North America. While similar, "chinook" is a regional name for the same phenomenon.
  • The chinook wind is North America's version of the foehn.

Synonyms

• Katabatic wind: A more general term for any wind that flows downhill. However, not all katabatic winds are warm and dry like a foehn; some, like glacier winds, are cold.
• Downslope wind: A descriptive term for winds moving down a slope.

Related Phrases (Phrasal Verbs)

(This word is a specific meteorological noun and does not commonly form phrasal verbs.)

Related Idioms

(This is a technical term and is not typically used in idiomatic expressions.)

Noun

1. a warm dry wind that blows down the northern slopes of the Alps