ποτνίασις
From LSJ
ἔξαψις σφοδρὰ μετὰ πολλῆς βίας πίπτουσα ἐπὶ γῆς → a violent flare-up falling on the ground with great force, thunder and lightning
English (LSJ)
εως, ἡ,
A loud lamentation, Poll.6.201.
German (Pape)
[Seite 690] ἡ, das Anrufen, flehentliche Bitten eines Gottes; Poll. 6, 201 nennt das Wort τραχύ.