Histories

Herodotus

Herodotus. Godley, Alfred Denis, translator. Cambridge, MA; London: Harvard University Press; William Heinemann, Ltd., 1920-1925 (printing).

and when there are thunderstorms in other lands, here there are none, but in summer there are plenty of them; if there is a thunderstorm in winter they are apt to wonder at it as at a portent. And so, too, if there is an earthquake summer or winter, it is considered a portent in Scythia (region (general)), AsiaScythia.