A front which is moving at a speed of less than about 5 knots is a ______ front

A front which is moving at a speed of less than about 5 knots is a ______ front

• A. Cold front
• B. Warm front
• C. Stationary front
• D. Occluded front

Answer: (C)

Front movement speed determines how we classify a boundary between air masses. If a front is moving very slowly, about 5 knots or less, it’s effectively not moving across the surface and is called a stationary front. This means the weather along that boundary tends to stay in roughly the same place for a while, with persistent cloudiness or precipitation and winds that don’t shift much from one spot to the next. The other fronts imply more noticeable motion: a cold front typically advances faster and brings a quicker change in weather, a warm front also moves but not as abruptly as a cold front, and an occluded front forms when a cold front catches up to a warm front and the boundary shifts with the cyclone’s evolution.

Front movement speed determines how we classify a boundary between air masses. If a front is moving very slowly, about 5 knots or less, it’s effectively not moving across the surface and is called a stationary front. This means the weather along that boundary tends to stay in roughly the same place for a while, with persistent cloudiness or precipitation and winds that don’t shift much from one spot to the next.

The other fronts imply more noticeable motion: a cold front typically advances faster and brings a quicker change in weather, a warm front also moves but not as abruptly as a cold front, and an occluded front forms when a cold front catches up to a warm front and the boundary shifts with the cyclone’s evolution.