Snowstorm

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Old English snāw, of Germanic origin; related to Dutch sneeuw and German Schnee, from an Indo-European root shared by Latin nix, niv- and Greek nipha .

wiktionary

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From snow +‎ storm. Compare Saterland Frisian Sneestoarm, West Frisian sniestoarm, German Schneesturm, Dutch sneeuwstorm, Swedish snöstorm, Icelandic snjóstormur.

etymonline

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snowstorm (n.)

1771, from snow (n.) + storm (n.).