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