https://phys.org/news/2018-10-nasa-noaa-suomi-npp-satellite-typhoon.html

On Oct. 23, NOAA's National Weather Service (NWS) in Tiyan, Guam noted several warnings and watches. Typhoon warnings remain in effect for Rota, Tinian and Saipan. A Tropical Storm Warning is now in effect for Guam. A tropical storm watch remain in effect for Alamagan, Pagan, and Agrihan.

At 10 p.m. CHST local time (8 a.m. EDT /1200 UTC) on Oct. 23 the center of Typhoon Yutu was located near latitude 12.0 degrees north and longitude 149.6 degrees east.