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Its not really calculated, its live information from people in those areas. There are numerous volunteers around you that collect weather data and send this information to the state that you live in and also to the local broadcasting companies. They report wind speed, direction, precipitation, temperature, barometric pressure, humidity and visibility.
The ones that I know of around me are automated. They are programmed to call in at pre-set intervals. Most visibility reports are from air traffic control towers where this information is vital to normal everyday operations of an airport.
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∙ 16y ago
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What is the maximum speed whenever visibility is less than mile?
Visibility does not depend on speed.
On earth.nullschool.net what is the altitude for the 850 hpa height option?
It's approximately 1500m and is generally used in weather forecasts. In reality it varies slightly depending on the temperature and is calculated using the Hypsometric equation.
What is the visibility of 4?
If you can see it, it is visible. If you cannot it is not visible. Quite simple, really.
What does 24 hour visibility mean?
Means the business is online as well as a shop
How fast do you drive in fog is mostly dependent on?
It depends mainly on the visibility - how far you can see.
If the visibility is good what will the weather be like?
If the visibility is good, it indicates that there are no significant weather conditions affecting visibility, such as fog, rain, or snow. Generally, in such cases, the weather is likely to be clear with little to no cloud cover. However, the exact weather conditions and temperature can vary depending on the season and location.
What does visibility mean in weather?
hard or easy to see
What is the weather term for how far ahead we can see?
Visibility.
What is a rehearsal site selection criterion parking weather security or limited visibility?
weather
What is a good website for finding local weather reports?
The Weather Network is a great site for weather reports... http://www.the weathernetwork.com
What does a forcaster do?
A weather forecaster studies the weather and then reports it.
Where online can someone find local weather reports for this week?
The most accurate place online for finding local weather reports is The Met Office via their website. The BBC and World Weather also offer weather forecasts and reports.
Who governs the accuracy of weather reports?
The accuracy of weather reports is governed by different authorities around the world. In the UK they are governed by the MET office who provide the necessary information to the various weather reports for TV stations.
What is distance seen without help of an object?
In weather terms.. Visibility
Where online can one find Snowbird weather reports?
There is a Snowbird website that has weather reports for the mountain. If one needs the weather report before going skiing, they can check the website.
What is the two-second rule was designed for good weather and clear visibility?
true
What is a visibility meter used for?
It measures the distance that human eyes can observe his(or her) surroundings. For example, in weather news, the visibility of the day with fogs is about 2kms from the shore.
