Etymology
The etymology of sense 1 (“noisy celebration or party”) is unknown. Sense 2 (“strong wind”) is possibly from one of the following:
* Borrowed from Orkney Scots hool(an) (“strong wind”) + English -ie (diminutive suffix). Hoolan is derived from Norn (unattested), from Old Norse ýlun (“howling, wailing”), from ýla (“to howl”) (ultimately onomatopoeic) + -un (suffix forming nouns).
* From sense 1.