Cancellation of Classes and Examinations
When the Tropical Storm Warning Signal No. 8 (or a higher number) or the Black Rainstorm Warning Signal is hoisted, the following arrangements will apply:
(A) For classes and examinations not yet started
If either of the warnings is hoisted or in force at or after 6:00am :
If either of the warnings is hoisted or in force at or after 11:00am :
If either of the warnings is hoisted or in force at or after 3:00pm :
(B) For classes and examinations already started
When the Tropical Storm Warning Signal No. 8 or above is hoisted :
When the Black Rainstorm Warning Signal is hoisted :
When the Tropical Storm Warning Signal No. 3 or the Red Rainstorm Warning Signal is in force, it should be assumed that all classes and examinations will be held as scheduled unless an announcement to the contrary has been made by the University.
Definitions can be found at the Hong Kong Observatory website