Here are the last news about super typhoon Usagi: So far, it seems that the 1000 km large monster typhoon is always heading towards Hong Kong - and so Hong Kong Disneyland - and should be there in the next 48 hours. The good news is that Usagi winds should be less strong but still probably around 150 km/h which is still enough to be devastating.
And here is what the park will do if Usagi don't change its path. Practically, all the outdoor and semi-outdoor attractions ( like for instance Fantasyland Carousel ) will be closed when "typhoon signal number 3" will be announced ( i.e a sustained wind speed of 41-62 kilometres per hour (km/h) with gusts which may exceed 110 km/h).
However, Hong Kong Disneyland will announce an early closure of the park 2-3 hours before "typhoon signal number 8" ( i.e a sustained wind speed of 63-117 km/h and gusts which may exceed 180 km/h) and the park will reopen in the next 2 hours after typhoon signal number 8 will be off. Apparently this is HKDL regulation each time there is a hurricane, and this one should make no exception.
Again, if you live in or are currently visiting Hong Kong, stay safe as a 1000 km large typhoon is no joking!