āhatāḥ stanayitnavaḥ

tatah-thereafter; maha-ghanah-big clouds; vyomni-in the sky; gambhira-parusa-svanah-making very deep rumbling sounds; aṅgaran-embers; mumucuh-released; vataih-by the strong winds; ahatah-harassed; stanayitnavah-with the sound of thunder.