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