In meteorology, when a cold one has a close encounter with a warm one & takes it over, it's called an occluded one
They should also be listening to forecasts 
for adjacent marine areas, as the weather may carry over from one... [DOC] [TLE] Chapter 1: Marine Meteorology Primer [PAR] Aug 26, 2016 ... Occluded Front: A front (warm or cold) that has