Διοσημεία

A [sign of] divine anger.¹
"The thousand Scythians were present, more rapid than any Zeus-omen, whether a flash of light or a hurricane or a thunderbolt or a storm or a meteorite".²
Aternatively a dioshmi/a is an unexpected storm. Aristophanes³[writes]: "it is a divine omen,⁴ and a raindrop⁵ has struck me!" –- [Herald:] "the Thracians are to withdraw,⁶ and return the day after tomorrow;⁷ for the prytaneis are dismissing the assembly".⁸ In reference to business being postponed. The Athenians were respectful⁹ of divine omens and used to break up the assemblies or everything else they were going to accomplish, every time a sign came from the sky.
And Eunapius says about the emperor Carinus: "and all of his outbursts were more violent than a Zeus-omen and he used to have fits of rage in the midst of his subjects".¹⁰