Proto-Indo-European *(s)twer-

→ English stoor (derived)

→ Danish storm (derived)

→ Faroese stormur (derived)

→ Icelandic stormur (derived)

→ Luxembourgish Stuerm (derived)

→ Norwegian Bokmål storm (derived)

→ Norwegian Nynorsk storm (derived)

→ Old Norse stormr (cognate)