T8 early this afternoon?
When UTOR was 310km away, the HKO issued the T8 for that relatively mild storm.
At the moment, USAGI is 430km away moving at about 18km per hour. That means in about 6 or 7 hours, it will be 310 km away. So sometime around noon to 1:00pm?
Technically, according to HKO, when 4 of the 8 wind speed gauges used for Typhoons hit a certain level, the T8 is issued. But I think it's not necessarily that cut and dried.