They call it stormy Monday but Tuesday's just as bad...

Check out this water spout that formed just in front of Man Kok Tsui today.
According to the observatory they are quite common.
Never seen on before though.
You can just see the outline of the hills behind Kowloon to the left while Hong Kong Island is hidden in the clouds and behind the island.

And here is the radar image

And here is the rainfall map