Strong’s Greek
G2366 — thuella
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
θύελλα
thuella — pronounced thoo'-el-lah
from 2380 (in the sense of blowing) a storm:--tempest. see GREEK for 2380
1 occurrence in the KJV.
Hebrews 12:18
For ye are not come unto the mount that might be touched, and that burned with fire, nor unto blackness, and darkness, and tempest,