What are the categories of cyclones?

Indian Meteorological Department (IMD), classified the low-pressure systems in the Bay of Bengal and the Arabian Sea on the basis of maximum sustained wind speed.

Type of disturbance

Wind speed

Low-pressure area

Less than 31 km per hour


31-49 km per hour

Deep depression

50-61 km per hour

Cyclonic storm

62-88 km per hour

Severe cyclonic storm

89-117 km per hour

Severe cyclonic storm

118-167 km per hour

Very severe cyclonic storm

168-221 km per hour

Super cyclonic storm

222 km per hour and higher

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