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Weather Software => Other Weather Software => Topic started by: Condor on November 10, 2009, 07:52:47 AM

Title: How to identify wind direction based on degrees ?
Post by: Condor on November 10, 2009, 07:52:47 AM
Hello,
did any body can write or show me the page that i can get information how to identify wind direction based on compass numerical values ?
I have two pictures, first is compass directions
(http://www.compassdude.com/i/compass-directions.gif)

and second picture is compass direction based on degree

(http://www.compassdude.com/i/compass-degrees.gif)

but i can't find exact information at what value of degrees the readings become from N to NNE, NNE to NE, NE to ENE and so on.
Title: Re: How to identify wind direction based on degrees ?
Post by: wxtech on November 10, 2009, 08:12:02 AM
N = 0º or 360º
NNE = 22.5º
NE = 45º
ENE = 67.5º
E = 90º
ESE = 112.5º
SE = 135º
SSE = 157.5º
S = 180º
SSW = 202.5º
SW = 225º
WSW = 247.5º
W = 270º
WNW = 292.5º
NW = 315º
NNW = 337.5º
N = 360º or 0º
The compass (a circle) has 360º.  You have 16 points on your compass.  360 divided by 16 equals 22.5 degrees separation between each point. 
Title: Re: How to identify wind direction based on degrees ?
Post by: Condor on November 10, 2009, 10:52:12 AM
Thank you.
Title: Re: How to identify wind direction based on degrees ?
Post by: DaculaWeather on November 10, 2009, 11:37:29 AM
Keep in mind it would be something like this.

N - 347.5 - 12.5 degrees or +/- 12.5 degrees from 0 degrees
NNE - 12.25 - 34.75 or +/- 12.5 degrees from 22.5 degrees
NE - 34.75 - 57.25 or +/- 12.5 degrees from 45 degrees
etc.

Title: Re: How to identify wind direction based on degrees ?
Post by: Condor on November 11, 2009, 03:07:04 AM
Keep in mind it would be something like this.

N - 347.5 - 12.5 degrees or +/- 12.5 degrees from 0 degrees
NNE - 12.25 - 34.75 or +/- 12.5 degrees from 22.5 degrees
NE - 34.75 - 57.25 or +/- 12.5 degrees from 45 degrees
etc.



Thank you, that is exact what i need.