https://phys.org/news/2018-08-nasa-mile-wide-eye-typhoon.html

Enhanced infrared satellite imagery showed very strong thunderstorms as cold as or colder than minus 63 degrees Fahrenheit (minus 53 Celsius) surrounding Typhoon Soulik's 50 mile wide eye. Imagery also showed spiral banding of thunderstorms wrapping around the eye with a partially eroded eye wall in the western side. A microwave image depicts a symmetric system with a well-defined microwave eye feature, which supports the initial position with good confidence.

On Aug. 21 at 11 a.m. EDT (1500 UTC) Joint Typhoon Warning Center or JTWC noted Typhoon Soulik was located approximately 194 nautical miles north-northeast of Kadena Air Base, has tracked northwestward at 15 mph (13 knots/24 kph). Maximum sustained winds were near 109 mph (95 knots/176 kph).