2007-03-26 09:18:07 · 2 answers · asked by Chandra T 1 in Environment
The wind speed will depend on the organisation and the pressure of the system. Typically winds of up to 120 km/h for a category 1 system to 300+ km/h for cat 5. Usually just before a cyclone hits to localised winds are seemingly still and the weather fine. That's because the cyclone is sucking all the weather in to itself. But when the edge of the system crosses over, then the wind and rain starts. A bit like the calm before the storm. When the system crosses land it loses all its strength and turns into whats known as a tropical depression once the wind speed drops. This is when a lot of flooding occurs.
2007-03-26 11:42:04 · answer #1 · answered by Professor Kitty 6 · 0⤊ 0⤋
A tropical depression is an organized system of clouds and thunderstorms with a defined surface circulation and maximum sustained winds of less than 17 m/s (33 kt, 38 mph, or 62 km/h).
2007-03-26 17:02:04 · answer #2 · answered by campbelp2002 7 · 0⤊ 0⤋