Tuulen voimakkuus 0 - Calm

Vaikutus maapallon

Calm, smoke rises vertically

Sea valtio

Sea surface smooth and mirror-like

Nopeus
  • 0-1 km/h
  • 0-0,54 noeuds (knot)
  • 0 - 0,621 mph
hauteur
  • 0 m
  • 0 ft
 Signe

Tuulen voimakkuus 1 - Light Air

Vaikutus maapallon

Smoke drift indicates wind direction, still wind vanes

Sea valtio

Scaly ripples, no foam crests

Nopeus
  • 1-5 km/h
  • 0,54-2,7 noeuds (knot)
  • 0,621 - 3,11 mph
hauteur
  • 0 - 0,1 m
  • 0-1 ft
 Signe

Tuulen voimakkuus 2 - Light Breeze

Vaikutus maapallon

Wind felt on face, leaves rustle, vanes begin to move

Sea valtio

Small wavelets, crests glassy, no breaking

Nopeus
  • 5-11 km/h
  • 2,7-5,9 noeuds (knot)
  • 3,11-6,84 mph
hauteur
  • 0,1 - 0,5 m
  • 1-2 ft
 Signe

Tuulen voimakkuus 3 - Gentle Breeze

Vaikutus maapallon

Leaves and small twigs constantly moving, light flags extended

Sea valtio

Large wavelets, crests begin to break, scattered whitecaps

Nopeus
  • 11-19 km/h
  • 5.9-10,2 noeuds (knot)
  • 6,84-11,81 mph
hauteur
  • 0,5 - 1,25 m
  • 2-3,5 ft
 Signe

Tuulen voimakkuus 4 - Moderate Breeze

Vaikutus maapallon

Dust, leaves, and loose paper lifted, small tree branches move

Sea valtio

Small waves. becoming longer, numerous whitecaps

Nopeus
  • 19-28 km/h
  • 10,2-15 noeuds (knot)
  • 11,81-17,4 mph
hauteur
  • 1-2 m
  • 3,5-6 ft
 Signe

Tuulen voimakkuus 5 - Fresh Breeze

Vaikutus maapallon

Small trees in leaf begin to sway

Sea valtio

Moderate waves taking longer form, many whitecaps, some spray

Nopeus
  • 28-38 km/h
  • 15-20,5 noeuds (knot)
  • 17,4-23,61 mph
hauteur
  • 2-3 m
  • 6-9 ft
 Signe

Tuulen voimakkuus 6 - Strong Breeze

Vaikutus maapallon

Larger tree branches moving, whistling in wires

Sea valtio

Larger waves , whitecaps common, more spray

Nopeus
  • 38-50 km/h
  • 20,5-27 noeuds (knot)
  • 23,61-31,07 mph
hauteur
  • 3-4 m
  • 9-13 ft
 Signe

Tuulen voimakkuus 7 - Near Gale

Vaikutus maapallon

Whole trees moving, resistance felt walking against wind

Sea valtio

Sea heaps up, waves , white foam streaks off breakers

Nopeus
  • 50-61 km/h
  • 27-33 noeuds (knot)
  • 31,07-37,9 mph
hauteur
  • 4-5,5 m
  • 13-19 ft
 Signe

Tuulen voimakkuus 8 - Gale

Vaikutus maapallon

Whole trees in motion, resistance felt walking against wind

Sea valtio

Moderately high waves of greater length, edges of crests begin to break into spindrift, foam blown in streaks

Nopeus
  • 62-74 km/h
  • 33-40 noeuds (knot)
  • 37,9-45,98 mph
hauteur
  • 5,5-7,5 m
  • 18-25 ft
 Signe

Tuulen voimakkuus 9 - Strong Gale

Vaikutus maapallon

Slight structural damage occurs, slate blows off roofs

Sea valtio

High waves, sea begins to roll, dense streaks of foam, spray may reduce visibility

Nopeus
  • 75-88 km/h
  • 40-47,5 noeuds (knot)
  • 45,98-54,68 mph
hauteur
  • 7-10 m
  • 23-32 ft
 Signe

Tuulen voimakkuus 10 - Storm

Vaikutus maapallon

Seldom experienced on land, trees broken or uprooted,considerable structural damage

Sea valtio

Very high waves with overhanging crests, sea white with densely blown foam, heavy rolling, lowered visibility

Nopeus
  • 89-102 km/h
  • 47,5-55 noeuds (knot)
  • 54,68-63,38 mph
hauteur
  • 9-12,5 m
  • 29-41 ft
 Signe

Tuulen voimakkuus 11 - Violent Storm

Vaikutus maapallon

Widespread devastation

Sea valtio

Exceptionally high waves, foam patches cover sea, visibility more reduced

Nopeus
  • 103-117 km/h
  • 55-63 noeuds (knot)
  • 63,38-72,2 mph
hauteur
  • 11,5-16 m
  • 37-52 ft
 Signe

Tuulen voimakkuus 12 - Hurricane

Vaikutus maapallon

Considerable destruction

Sea valtio

Air filled with foam, sea completely white with driving spray, visibility greatly reduced

Nopeus
  • >118 km/h
  • >63 noeuds (knot)
  • >72,2 mph
hauteur
  • >14 m
  • >46 ft
 Signe