τυφὼς γὰρ ἐκβαίνειν παρασκευάζεται → a hurricane is getting ready to burst
sēmĭ-orbis: is, m.,I a half-circle, semicircle, Sen. Q. N. 1, 8, 4; Amm. 20, 3, 10; 22, 8, 5.
