Are high house sometimes have large windy?

In big cities, when approaching buildings, often blown by strong winds from nowhere. The winds beside the buildings are not only very big, but they often come unexpectedly, it does not care about the direction of the wind today, sometimes they come from all four sides. Not only that, but sometimes the winds can blow from the rooftop to the ground, sometimes from the ground blowing up.

The cause of the winds on these buildings does not follow a rule, mainly because the air flow in the process has been hindered by this high-rise building, causing them to turn.

Another reason is due to slow-moving airflows, while creeping into the gaps of buildings, the speed of movement increases.

So the winds that come out of tall buildings' gaps are always larger than others. But the strong wind rises from the canyon, the straits are also from due to the above cause.

Residents in southern cities can take advantage of this feature to gather under high-rise buildings on summer nights.