

M.P.HTermEffects on SeaEffects on LandWave Hgtͻ
                                                                           
 < 1    Calm         Sea like a mirror    Calm, smoke goes up        0     
                                                                           
 1-3    Light air    Slight ripples       Smoke shows direction      0     
                                                                           
 4-7    Light Breeze Small wavelets       Leaves Rustle             .33    
                                                                           
 8-12   Gentle Brz.  Large wavelets       Leaves, twigs in motion   1-2    
                                                                           
 13-18  Moderate     Waves w/whitecaps    Dust, leaves, paper       2-4    
                     Breeze               easily flutter                   
                                                                           
 19-24  Fresh Brz.   Moderate waves       Small trees sway          4-8    
                                                                           
 25-31  Strong Brz.  Larger waves, spray  Larger branches moving    8-13   
                     many whitecaps       wires whistling.                 
                                                                           
 32-38  Near Gale    White foam from      Whole trees move,         13-17  
                     whitecaps            hard to walk.                    
                                                                           
 39-46  Gale         Higher waves of more Small branches of trees   18-20  
                     length, foam streaks broken, more resistance          
                                                                           
 47-54  Strong Gale  High waves, sea rollsSmall building damage            
                                                                           
 55-63  Storm        Very high waves with Trees break, uproot,      20-30  
                     crests, sea looks    Large building damage            
                     mostly white.                                         
                                                                           
 64-72  Violent      Air has much foam,   Seldom on land, much      30-45  
        Storm        sea mostly white,    damage.                          
                     poor visibility.                                      
                                                                           
73-136  Hurricane    Air filled w/foam,   Very rare on land,        > 45   
                     sea completely       extremely widespread             
                     white, very little   damage.                          
                     visibility.                                           
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