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