Original: The inner core of convection became ragged-looking on satellite imagery, and based on reports from Hurricane Hunters it is estimated the hurricane attained peak winds of 90 mph (150 km/h) late on September 10.
Simplified: The inner core of convection became ragged-looking on satellite pictures, and based on reports from Hurricane Hunters it is estimated the hurricane reached peak winds of 90 mph (150 km/h) late on September 10.