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Wind The below chart shows windspeed and direction, the wind is shown in two forms: 1) as Wind arrows - the head of the arrow shows the direction in which the wind is blowing and the 'feathers' the strength; a short feather is 5 knots, a long feather is 10 knots and a triangle is 50 knots - add the feathers to get the wind speed. 2) as warning regions where speeds above 22 knots are coloured; the colour bands correspond with Beaufort Force 6 and higher - Met Eireann.
The Estimated 3-hour Planetary Kp-index is derived at the NOAA Space Weather Prediction Center using data from the following ground-based magnetometers: Boulder, Colorado; Chambon la Foret, France; Fredericksburg, Virginia; Fresno, California; Hartland, UK; Newport, Washington; Sitka, Alaska; Jeju, Korea. These data are made available thanks to the cooperative efforts between SWPC and data providers around the world, which currently includes the U.S.
NOAA / Space Weather Prediction Center Being able to see the Aurora depends mainly on two factors, geomagnetic activity (the degree of disturbance of the earth's magnetic field at the time) and your geographic location.
Switch to visible satellite image sequence These images come from satellites which remain above a fixed point on the Earth (i.e. they are “geostationary”).