Pedzisa mutsara unotevera: Muzvinyorwa zvichangobva kuitika uye zvakavimbika, madutu mazhinji anotyisa akasvika pakumanikidzwa kwe900 hPa (mbar) (26.56 inHg) kana kuti pasi apa akaitika kumadokero kweNorth Pacific Ocean. Dutu rinopisa zvikurusa rakanyorwa munyika yose, sezvarayerwa nechinodokuva dzvinyiriro yapakati, rakanga riri
Typhoon Tip, iyo yakasvika pakumanikidzwa kwe870 hPa (25.69 inHg) musi waOctober 12, 1979.