G2366
θύελλα
storm
θύελλα, -ης, ἡ (θύω), [in LXX Deu.4:11 5:22 (עֲרָפֶל), Exo.10:22 * ;] (poët. in cl.), a hurricane, cyclone, whirlwind: Heb.12:18.† SYN.: λαίλαψ (which see) (AS)
The KJV translates G2366 in the following manner:
tempest (2x)
Full Thayer's lexicon entry
θύελλα — thýella
θύελλα, θυελλης, ἡ (θύω to boil, foam, rage, as ἄελλα from ἄω, ἄημι), a sudden storm, tempest, whirlwind: Heb 12:18. (Deu 4:11; Deu 5:22; Homer, Hesiod, Tragg., others) (Cf. Schmidt, chapter 55, 11; Trench, § 73 at the end.)
1 occurrence