sudden gust of wind
A sudden, strong gust of wind, often appearing out of nowhere. The term carries a folkloric nuance, likening the gust to the work of a tengu (a mythical creature).
I encountered a sudden gust on the mountain path and my hat was blown off.
A sudden gust blew and nearly sent the laundry flying.
一陣の風 means a gust or blast of wind, but is a more general phrase without the mythical connotation of 天狗風.
Compound of 天狗 (tengu, a mythical creature) and 風 (wind). The term likely originated from the folk belief that tengu could cause sudden, violent gusts of wind.