Explanation of the forecast text
Farvandsvæsenet
 
 

Explanation of the forecast text 

Current table:
Description Knot
Calm 0,0-0,2
Weak current 0,2-0,5
Moderate current 0,5-1,0
Strong current 1,0-2,0
Very strong current >2,0


Wave table:
Description Height (m)
Calm (Glassy) No wave
Calm (Rippled) 0-0,1
Smooth 0,1-0,5
Slight 0,5-1,25
Moderate 1,25-2,5
Rough 2,5-4,0
Very rough 4,0-6,0
High 6,0-9,0
Very high 9,0-14,0
Phenomenal >14,0


Vind table:
Description m/s Knot km/h Beaufort Sea conditions
Hurricane-force >32,6 >63  >117 12 Huge waves. Sea is completely white with foam and spray. Air is filled with driving spray, greatly reducing visibility
Violent storm 28,5-32,6 56-63 103-117 11  Exceptionally high waves. Very large patches of foam, driven before the wind, cover much of the sea surface. Very large amounts of airborne spray severely reduce visibility
Storm, Whole gale 24,5-28,4 48-55 89-102 10 Very high waves with overhanging crests. Large patches of foam from wave crests give the sea a white appearance. Considerable tumbling of waves with heavy impact. Large amounts of airborne spray reduce visibility
Strong gale 20,8-24,4 41-47 75-88 9 High waves whose crests sometimes roll over. Dense foam is blown along wind direction. Large amounts of airborne spray may begin to reduce visibility
Gale, fresh gale 17,2-20,7 34-40 62-74 8 Moderately high waves with breaking crests forming spindrift. Well-marked streaks of foam are blown along wind direction. Considerable airborne spray
High wind, Moderate gale, Near gale 13,9-17,1 28-33 50-61 7 Sea heaps up. Some foam from breaking waves is blown into streaks along wind direction. Moderate amounts of airborne spray
Strong breeeze 10,8-13,8 22-27 39-49 6 Long waves begin to form. White foam crests are very frequent. Some airborne spray is present
Fresh breeze 8,0-10,7 17-21 29-38 5 Moderate waves of some length. Many white horses. Small amounts of spray
Moderate breeze 5,5-7,9 11-16 20-28 4 Small waves with breaking crests. Fairly frequent white horses
Gentle breeze 3,4-5,4 7-10 12-19 3 Large wavelets. Crests begin to break; scattered whitecaps
Light breeze 1,6-3,3 4-6 6-11 2 Small wavelets. Crests of glassy appearance, not breaking
Light air 0,3-1,5 1-3 1-5 1 Ripples without crests
Calm 0,0-0,2 <1 <1 0 Flat
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