Fast-moving Typhoon Danas reached Category 4 status on October 7, 2013, as it approached the island of Okinawa, Japan. Peak one-minute maximum sustained winds were reported at 145 mph (233 km/h) at approximately 06:00 UTC (3:00 p.m. Japan Standard Time) that same day.
The Moderate Resolution Imaging Spectroradiometer (MODIS) aboard NASA’s Terra satellite flew over the strong storm at 0200 UTC (11:00 a.m. JST), just before it reached maximum intensity. At that time Danas sported a large, cloud-filled eye and storm bands stretched across the Ryukyu Island chain, with winds of approximately 140 mph (225 km/h) near the center.
As the storm moved into cooler waters, it quickly began to weaken, clipping the tip of Okinawa at Category 2 strength. By early on October 8, the eye of Typhoon Danas was located over the South China Sea with maximum sustained winds near the center of 115 mph (185 km/h), with tropical storm force winds extending 165 miles from the center.
Although Danas was a strong storm and a major rain-maker, it moved very quickly across the region and weakened so quickly that damage was relatively minimal.