Visibility

Application state visibility from far away

Application state visibility from far away
  1. What is a good visibility distance?
  2. What does visibility 10 miles mean?
  3. How do you take prevailing visibility?

What is a good visibility distance?

Generally, an average height person can see up to 4.5 kilometers (2.8 miles) at sea level. This is the best possible visibility at sea you can have, if your eyes are six feet above sea level and the weather is great.

What does visibility 10 miles mean?

So, 10-mile-visibility means that a person should be able "to see and identify" in the daytime "a prominent dark object against the sky at the horizon" and at night "a known, preferably unfocused, moderately intense light source" that's 10 miles away.

How do you take prevailing visibility?

To take the prevailing visibility, controllers reference a number of visual reference points: usually buildings, hills, or other geographic features. The value obtained is usually reported on a METAR and recorded on the ATIS.

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