thundersquall

plural thundersqualls

1. rareclimatologyA squall accompanied by thunder.

   “And pray, sir,” said he, looking thundersqualls at me, “ where did you learn them?”

   1855, Thomas Chandler Haliburton, Nature and Human Nature, Stringer and Townsend, page 279

   2 more examples

   Then Dick began a suit. for the recovery of wages due him, which Podlong resisted on the ground that Dick had broken his contract, and subjected him to great loss and inconvenience by striking work in the midst of a thundersquall in the hayfield.

   1863, John Townsend Trowbridge, Woodie Thorpe's Pilgrimage and Other Stories, Boston, Lee and Shepard, page 228

   The 25th brought yet more storms and a violent thundersquall in Norfolk caused a great deal of damage in Stratton Strawless?

   1984, Whitaker's Almanack, page 160