Typhoon Yancy
... that the path of Typhoon Yancy wobbled in a trochoidal pattern as it approached Taiwan?
... that the path of <b id="mwCLw"><a href="./Typhoon_Yancy_(1990)" id="mwCL0" rel="mw:WikiLink" title="Typhoon Yancy (1990)">Typhoon Yancy</a></b> wobbled in a <a href="./Trochoid" id="mwCL4" rel="mw:WikiLink" title="Trochoid">trochoidal</a> pattern as it approached Taiwan?