rhizoverbBeta
DictionaryocclusionOvertaking weather fronts
noun

occlusion

The overtaking of a warm front by a cold front.

Occlusion occurs when a cold front catches up to a warm front.

Etymology
occlusionLatinto close

The source verb means to close or shut off. In weather, the advancing cold front closes the warm sector away from the surface as it overtakes the warm front.

More examples

  • The forecast calls for rain as occlusion develops.
  • Meteorologists track the occlusion as the storm moves inland.
  • Not all occlusions produce the same amount of rain.

Forms

occlusion · occlusions

occlude verb — To overtake a warm front.