noun, feminine/ˈrat͡ʃa/plural: rachas
gust of wind, squall; streak (of luck, good or bad); TikTok streak
“Estoy en racha.” — I'm on a roll.
Synonyms: ráfaga
Maybe borrowed from Arabic رَجّة (rajja, “agitation”), from رَجَّ (rajja, “to shake”). Cognate to Catalan ratxa.