Assertion: extratropical cyclone | /r/CapableOf | encounter other kind of cyclonic vortex
Facets:
value: in the atmosphere
type: LOCATION
value: almost
type: DEGREE
Source sentences:
text: Where an extratropical cyclone encounters another extratropical cyclone (or almost any other kind of cyclonic vortex in the atmosphere), the two may combine to become a binary cyclone, where the vortices of the two cyclones rotate around each other (known as the "Fujiwhara effect").