Where does “yarnstorm” come from?

yarnstorm (English) comes from English storm, from Middle English storm, from Old English storm, from Proto-West Germanic *sturm, from Proto-Germanic sturmaz, from Proto-Indo-European (s)twer- — to rotate, swirl, twirl, move around; to turn...

Ancestry of “yarnstorm”, step by step

yarnstorm traces back through two separate lines of ancestry.

via English storm

StepLanguageWordMeaning
1EnglishstormAny disturbed state of the atmosphere, especially...
2Middle EnglishstormA storm; an instance of intense wind and...
3Old Englishstormstorm
4Proto-West Germanic*sturmstorm
5Proto-Germanicsturmazstorm
6Proto-Indo-European(s)twer-to rotate, swirl, twirl, move around; to turn...

via English yarn

StepLanguageWordMeaning
1EnglishyarnA twisted strand of fiber used for knitting or...
2Middle Englishyernwilling, eager; to coagulate or curdle
3Old Englishġeorneager
4Proto-West Germanicgerneager, willing
5Proto-Germanicgernazeager, willing
6Proto-Indo-Europeanǵʰer-to yearn for; to enclose; bowels, intestines
Every word from Proto-Indo-European (s)twer-Every word from Proto-Germanic sturmazEvery word from Proto-West Germanic *sturm