Calm Hurricane Strong Gale Storm
Light Air Calm Strong Breeze Hurricane
50 500 100 200
10 100 30 50
Richter Scale Beaufort Scale Mercalli Scale deciBel Scale
Wind Speed Humidity Air Pressure Sea Conditions
0 to 6 0 to 36 0 to 12 0 to 24
Moderate Breeze Violent Storm Strong Breeze Gale
9 18 12 15