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Old 02-14-2019, 01:35 PM
 
650 posts, read 450,462 times
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So I checked the weather today using two different sources for the current conditions. One says the wind is going at 9 mph and the other says the sustained winds are at 24 mph. I went ouside and nearly fell down and it felt much colder than the actual temp. I said that the first one was wrong but some guy I know says that I should take into consideration that buildings block wind. So should weather stations be behind buildings to be accurate? Are lower wind speeds more accurate?

Edit: The program seems to be faulty when it comes to wind speeds I noticed.

Last edited by Neptunepenguins; 02-14-2019 at 02:09 PM..
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Old 02-14-2019, 01:42 PM
 
Location: Tricity, PL
61,721 posts, read 87,123,005 times
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Are those two stations next to each other?
But the Norway guy is right:

https://www.wunderground.com/weather...uide.asp#intro
https://barani.biz/kb/anemometer-wea...acement-guide/ <<< good guide
Perhaps you should mount the anemometer on the roof or any place free of obstacles that mess up your readings.
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Old 02-14-2019, 01:45 PM
 
650 posts, read 450,462 times
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By the way I checked Mount Washington's weather using both sites and one has the wind at 3.49 mph and the other at 48 mph.
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Old 02-14-2019, 01:50 PM
 
Location: Tricity, PL
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Sure, on the top at the observatory the wind speed will be higher than between buildings in a city...
https://www.mountwashington.org/expe...onditions.aspx
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Old 02-14-2019, 01:56 PM
 
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Hm well I decided to use the first sight to look up the same airport as the goverment site for the same airport and I still see differences between the discord bot and the goverment site.
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Old 02-14-2019, 03:19 PM
 
Location: Tricity, PL
61,721 posts, read 87,123,005 times
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Because different location points will give you different readings.
Even in the same location, if you put it between buildings, behind bushes, trees, or fences, on the top of high pole or a roof - you will get different readings for each one. Did you check the guide on my links?

BTW: you "nearly fell down" at 24mph?
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Old 02-14-2019, 03:31 PM
 
650 posts, read 450,462 times
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Quote:
Originally Posted by elnina View Post
Because different location points will give you different readings.
Even in the same location, if you put it between buildings, behind bushes, trees, or fences, on the top of high pole or a roof - you will get different readings for each one. Did you check the guide on my links?

BTW: you "nearly fell down" at 24mph?
It was a gust of wind and I was on a surface that wasn't stable. 24 mph by itself isn't all that bad, but it did make it feel much colder than normal. Supposedly the bot's software is giving off readings though. It was especially bad for Houston January of 2018 as they claimed it was snowing at 50F.
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Old 02-14-2019, 03:47 PM
 
Location: Central IL
20,722 posts, read 16,372,564 times
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Aren't official reporting stations supposed to have the equipment set up at a specific height above the ground and with a certain amount of clear space around it, including height above a roofline, etc.?

I mean certainly elevation in general and city versus countryside will make a difference but there should not be any structures immediately around a weather station that would significantly interfere with measurement temp., wind, or precipitation.

Amateur stations - could be anything so should not be relied upon unless confirmed through another source.
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