Southend on Sea Weather
4 Day Forecast
 
 
 

Wind History

 
     
Beaufort
number
(force)
Wind Speed Description Effects observed on the sea
knots mph
0 under 1 under 1 Calm Sea is like a mirror
1 1 - 3 1 - 3 Light air Ripples with appearance of scales; no foam crests
2 4 - 6 4 - 7 Light breeze Small wavelets; crests of glassy appearance, not breaking
3 7 - 10 8 - 12 Gentle breeze Large wavelets; crests begin to break; scattered whitecaps
4 11-16 13-18 Moderate breeze Small waves, becoming longer; numerous whitecaps
5 17-21 19-24 Fresh breeze Moderate waves, taking longer form; many whitecaps; some spray
6 22-27 25-31 Strong breeze Larger waves forming; whitecaps everywhere; more spray
7 28-33 32-38 Near gale Sea heaps up; white foam from breaking waves begins to be blown in streaks
8 34-40 39-46 Gale Moderately high waves of greater length; edges of crests begin to break into spindrift; foam is blown in well-marked streaks
9 41-47 47-54 Strong gale High waves; sea begins to roll; dense streaks of foam; spray may begin to reduce visibility
10 48-55 55-63 Storm Very high waves with overhanging crests; sea takes white appearance as foam is blown in very dense streaks; rolling is heavy and visibility is reduced
11 56-63 64-72 Violent storm Exceptionally high waves; sea covered with white foam patches; visibility further reduced
12 64 and over 73 and over Hurricane Air filled with foam; sea completely white with driving spray; visibility greatly reduced