How are cyclones formed? How are they classified.
Answers
Answer:
cyclones are classified on the basis of the wind speed. The lowest official classification used in the North Indian Ocean is a Depression, which has 3-minute sustained wind speeds of between 20–31 mph (31–49 km/h).
Answer:
To form a cyclone, warm, moist air over the ocean rises upward from near the surface. As this air moves up and away from the ocean surface, it leaves is less air near the surface. So basically as the warm air rises, it causes an area of lower air pressure below.
cyclones are classified on the basis of the wind speed.
The lowest official classification used in the North Indian Ocean is a Depression, which has 3-minute sustained wind speeds of between 20–31 mph (31–49 km/h).
Deep Depression: If the depression intensifies further then it will become a Deep Depression, which has speeds of between 32–38 mph (50–61 km/h).
Cyclonic storm: If the Deep Depression develops gale force wind speeds of between 39–54 mph (62–88 km/h), it is called a Cyclonic storm and the IMD assigns a name to it.
Severe Cyclonic Storm: Severe Cyclonic Storms have storm force wind speeds of between 55–72 mph (89–117 km/h)
Very Severe Cyclonic Storm: Very Severe Cyclonic Storms have hurricane-force winds of 73–102 mph (118–166 km/h).
Extremely Severe Cyclonic Storm: Extremely Severe Cyclonic Storms have hurricane-force winds of 166–221 km/h (104–137 mph).
Super Cyclonic Storm: The highest classification used in the North Indian Ocean is a Super Cyclonic Storm, which have hurricane-force winds of above 138 mph (222 km/h).