Ihe ndị a na-ejikarị eme ihe gụnyere radius nke oke ifufe, radius nke 34-knot ifufe (ya bụ ike ifufe), radius nke outermost closed isobar (ROCI), na radius nke ifufe na-apụ. Ihe ọzọ metric bụ radius nke oke ifufe na-ebelata na 1 × 10−5 s−1. N'elu ụwa, oke ifufe na-ekpuchi ọtụtụ nha, site na 1002,000 kilomita (62<unk>1,243 mi) dị ka a tụrụ ya site na radius nke ifufe na-apụ. Ha bụ ndị kasị ukwuu na nkezi na Northwest Pacific Ocean basin na nke kasị nta na n'ebe ugwu ọwụwa anyanwụ Pacific Ocean basin. Ọ bụrụ na radius nke ikuku na-apụ na-emechi ihe dị ka ogo abụọ nke latitude (222 km) (nke ọ bụla na-agba ọsọ na-agba ọsọ), radius nke outermost closed isobar (ROCI), na radius nke ifufe na-apụ.
3<unk>6 ogo latitude