萨菲尔-辛普森飓风等级
Late on September 24, by low vertical wind shear and favourable outflow aloft across all quadrants, Typhoon Jelawat attained its peak intensity by the 10-minute maximum sustained winds reaching 110 knots (205 km/h, 125 mph) and the atmospheric pressure decreasing to . The typhoon also reached category 5 strength on the Saffir–Simpson hurricane wind scale, with a solid band of deep convection surrounding a eye. Tracking northwestwards since September 25, Typhoon Jelawat entered an eyewall replacement cycle, and the process ended with a eye on the next day.