https://phys.org/news/2018-06-tropical-storm-ewiniar-landfall-china.html

AIRS saw coldest cloud top temperatures in a small area around the center of circulation. Those cloud top temperatures were as cold as minus 63 degrees Fahrenheit (minus 53 degrees Celsius). Storms with cloud top temperatures that cold have the capability to produce heavy rainfall. Bands of thunderstorms extended far to the northeast of the center, but cloud tops in them were a lot warmer, meaning the storms were weaker.

The Joint Typhoon Warning Center of JTWC issued their final warning on Ewiniar on June 7 at 5 p.m. EDT (2100 UTC). At that time, Ewiniar was centered near latitude 22.3 degrees north and longitude 112.3 degrees west. That's about 106 nautical miles west of Hong Kong, China. Ewiniar is moving toward the north-northeast. Maximum sustained winds were near 40 mph (35 knots) but the storm was weakening rapidly after making landfall.