- The India Meteorological Department (IMD) has classified Cyclone Vayu as a “very severe” Cyclonic storm and predicted wind speeds of up to 175 km per hour when it makes landfall on the Saurashtra coast, Gujarat.
- The IMD ranks cyclones on a 5-point scale- a) Cyclonic storm, b) Severe cyclonic storm, c) Very severe cyclonic storm, d) Extremely Severe cyclonic storm and e) Super cyclonic storm.
- If a Deep Depression develops gale force wind speeds of between 62–88 km/h, it is called a Cyclonic storm. Severe Cyclonic Storms have storm force wind speeds of between 89–117 km/h.
- Very Severe Cyclonic Storms have hurricane-force winds of 118–166 km/h. Super Cyclonic Storms have hurricane-force winds of above 222 km/h.
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