Classification of Cyclonic Disturbances
The classification of cyclonic disturbances (low pressure areas)
is made by the strength of the associated winds. The classification
uses in India is given in the following table.
Classification of Cyclonic Disturbances
S.No. |
Disturbance |
Wind Speed (Knots) |
| 1. |
Low |
Less than 17. |
| 2. |
Depression |
17-27(32-50 km/h) |
| 3. |
Deep Depression |
28-33 (51-62 km/h) |
| 4. |
Cyclonic storm |
34-47 (63-88 km/h) |
| 5. |
Severe cyclonic storm with a core of Hurricane winds |
48-63-(89-118 km/h) |
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