Sila vetra 0 - Calm

Vplyv na Zemi

Calm, smoke rises vertically

Stav mora

Sea surface smooth and mirror-like

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

Sila vetra 1 - Light Air

Vplyv na Zemi

Smoke drift indicates wind direction, still wind vanes

Stav mora

Scaly ripples, no foam crests

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

Sila vetra 2 - Light Breeze

Vplyv na Zemi

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

Stav mora

Small wavelets, crests glassy, no breaking

Rýchlosť
  • 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

Sila vetra 3 - Gentle Breeze

Vplyv na Zemi

Leaves and small twigs constantly moving, light flags extended

Stav mora

Large wavelets, crests begin to break, scattered whitecaps

Rýchlosť
  • 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

Sila vetra 4 - Moderate Breeze

Vplyv na Zemi

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

Stav mora

Small waves. becoming longer, numerous whitecaps

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

Sila vetra 5 - Fresh Breeze

Vplyv na Zemi

Small trees in leaf begin to sway

Stav mora

Moderate waves taking longer form, many whitecaps, some spray

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

Sila vetra 6 - Strong Breeze

Vplyv na Zemi

Larger tree branches moving, whistling in wires

Stav mora

Larger waves , whitecaps common, more spray

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

Sila vetra 7 - Near Gale

Vplyv na Zemi

Whole trees moving, resistance felt walking against wind

Stav mora

Sea heaps up, waves , white foam streaks off breakers

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

Sila vetra 8 - Gale

Vplyv na Zemi

Whole trees in motion, resistance felt walking against wind

Stav mora

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

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

Sila vetra 9 - Strong Gale

Vplyv na Zemi

Slight structural damage occurs, slate blows off roofs

Stav mora

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

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

Sila vetra 10 - Storm

Vplyv na Zemi

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

Stav mora

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

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

Sila vetra 11 - Violent Storm

Vplyv na Zemi

Widespread devastation

Stav mora

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

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

Sila vetra 12 - Hurricane

Vplyv na Zemi

Considerable destruction

Stav mora

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

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