https://phys.org/news/2018-10-satellite-supertyphoon-yutu-eye-tinian.html

In addition, a Tropical Storm Warning remains in effect for Guam, Alamagan, Pagan, and Agrihan. Typhoon conditions are expected through late this morning (CHST time) at Rota,Tinian and Saipan. Tropical storm conditions are expected for Guam through this evening (CHST time). Tropical storm conditions are expected at Alamagan, Pagan, and Agrihan around midnight tonight through late Thursday evening (CHST time).

Shortly before the NOAA-20 satellite overpass on Oct. 23 (EDT) at 11:51 a.m. EDT (1551 UTC), Super typhoon Yutu hit Tinian Island, one of the three principle islands of the Northern Mariana Islands, just south of Sapian and a U.S. Commonwealth. Tinian is one of the three principal islands of the Commonwealth of the Northern Marianas. The southern part of Saipan was also impacted as well, where Saipan International Airport is located. A NOAA-20 infrared image showed coldest storm top temperatures around the eyewall at 210 kelvin (minus 81.6 Fahrenheit/minus 63.5 degrees Celsius) where storms are dropping extremely heavy rainfall.