Motorcycle riders were knocked over by strong winds in Vietnam as Typhoon Wipha swept through the region. Footage shows powerful gusts battering the road, with drivers halted as debris was blown across in Hanoi on July 19.

Satellite imagery can help determine the strength, size and cohesion of a storm. The stronger a storm becomes, the more likely an eye will form in the center. When the eye looks symmetrical, that often means the storm is not encountering anything to weaken it.