Mezue ahịrịokwu na-esonụ: N'ihe ndekọ kachasị ọhụrụ na nke a pụrụ ịdabere na ya, ọtụtụ oké ifufe na-ekpo ọkụ nke ruru nrụgide nke 900 hPa (mbar) (26.56 inHg) ma ọ bụ obere emeela na Western North Pacific Ocean. Oke ifufe kacha sie ike e dekọrọ n'ụwa niile, dị ka e si tụọ ya site na nrụgide kacha nta dị n'etiti, bụ
Typhoon Tip, nke ruru nrụgide nke 870 hPa (25.69 inHg) na Ọktọba 12, 1979.