Places in mid and high latitude are struck by heat wave. It is sometimes related to meandering of the air stream in the mid atmosphere. The latest episode of "Cool Met Stuff" will explain how the phenomenon of omega blocking affects the weather at the surface.
The video is now available on the "MyObservatory" mobile application and the Observatory's website for your viewing (programme is broadcasted in Cantonese).
Observatory's "Cool Met Stuff" channel (broadcast in Cantonese):
Broadcast schedule of various TV channels: