Força del vent 0 - Calm

Impacte sobre la terra

Calm, smoke rises vertically

Estat del mar

Sea surface smooth and mirror-like

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

Força del vent 1 - Light Air

Impacte sobre la terra

Smoke drift indicates wind direction, still wind vanes

Estat del mar

Scaly ripples, no foam crests

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

Força del vent 2 - Light Breeze

Impacte sobre la terra

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

Estat del mar

Small wavelets, crests glassy, no breaking

Velocitat
  • 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

Força del vent 3 - Gentle Breeze

Impacte sobre la terra

Leaves and small twigs constantly moving, light flags extended

Estat del mar

Large wavelets, crests begin to break, scattered whitecaps

Velocitat
  • 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

Força del vent 4 - Moderate Breeze

Impacte sobre la terra

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

Estat del mar

Small waves. becoming longer, numerous whitecaps

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

Força del vent 5 - Fresh Breeze

Impacte sobre la terra

Small trees in leaf begin to sway

Estat del mar

Moderate waves taking longer form, many whitecaps, some spray

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

Força del vent 6 - Strong Breeze

Impacte sobre la terra

Larger tree branches moving, whistling in wires

Estat del mar

Larger waves , whitecaps common, more spray

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

Força del vent 7 - Near Gale

Impacte sobre la terra

Whole trees moving, resistance felt walking against wind

Estat del mar

Sea heaps up, waves , white foam streaks off breakers

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

Força del vent 8 - Gale

Impacte sobre la terra

Whole trees in motion, resistance felt walking against wind

Estat del mar

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

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

Força del vent 9 - Strong Gale

Impacte sobre la terra

Slight structural damage occurs, slate blows off roofs

Estat del mar

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

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

Força del vent 10 - Storm

Impacte sobre la terra

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

Estat del mar

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

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

Força del vent 11 - Violent Storm

Impacte sobre la terra

Widespread devastation

Estat del mar

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

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

Força del vent 12 - Hurricane

Impacte sobre la terra

Considerable destruction

Estat del mar

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

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