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