Fujiwhara effect

This is from NWS Gray Maine forecast discussion this morning. Don’t recall seeing “Fujiwara” on a discussion before.

Previously…Still dealing with Fujiwara flow of 500 MB closed lows to our E as they rotate around one another.

It hadn’t occurred to me that the term “Fujiwara effect” would apply to non-tropical cyclones before but of course it does, it’s clear from the Wikipedia article:Fujiwhara effect - Wikipedia

The Fujiwhara effect , sometimes referred to as the Fujiwara effect , Fujiw(h)ara interaction or binary interaction , is a phenomenon that occurs when two nearby cyclonic vortices move around each other and close the distance between the circulations of their corresponding low-pressure areas.

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