Range Report ..
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Re: Weather Underground is it station pressure or ??
It's Corrected
the clue is, for every 1000ft of elevation you go up, the pressure should lose 1" of pressure.
WU shows Denver of having a baro of 30.25 today, yet we are at 5280ft, so really we should be at 25.25, if it was using absolute.
Most commercial weather uses corrected pressure.
It's Corrected
the clue is, for every 1000ft of elevation you go up, the pressure should lose 1" of pressure.
WU shows Denver of having a baro of 30.25 today, yet we are at 5280ft, so really we should be at 25.25, if it was using absolute.
Most commercial weather uses corrected pressure.
Re: Weather Underground is it station pressure or ??
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lowlight</div><div class="ubbcode-body"><span style="font-weight: bold">It's <div class="ubbcode-block"><div class="ubbcode-header">Click to reveal.. <input type="button" class="form-button" value="Show me!" onclick="toggle_spoiler(this, 'Yikes, my eyes!', 'Show me!')" /></div><div class="ubbcode-body"><div style="display: none;">station</div></div></div></span> Corrected,
the clue is, for every 1000ft of elevation you go up, the pressure should lose 1" of pressure.
WU shows Denver of having a baro of 30.25 today, yet we are at 5280ft, so really we should be at 25.25, if it was using absolute.
<span style="font-weight: bold">Most commercial weather uses corrected pressure.</span> </div></div>
This is confusing, as station is different from corrected pressure.
Weather sources report corrected pressure, which is different from absolute (aka station) pressure.
If you're getting your pressure from a weather channel, radio, or airport, you're getting corrected pressure. In this case, you have to check the 'pressure is corrected' box, and also give the program an altitude.
However if you're measuring your station (absolute) pressure with a kestrel type device, then you enter that directly, don't check 'pressure is corrected', and no need to input altitude.
The verbiage surrounding this issue is highly confusing even for those who understand the principal.
-Bryan
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lowlight</div><div class="ubbcode-body"><span style="font-weight: bold">It's <div class="ubbcode-block"><div class="ubbcode-header">Click to reveal.. <input type="button" class="form-button" value="Show me!" onclick="toggle_spoiler(this, 'Yikes, my eyes!', 'Show me!')" /></div><div class="ubbcode-body"><div style="display: none;">station</div></div></div></span> Corrected,
the clue is, for every 1000ft of elevation you go up, the pressure should lose 1" of pressure.
WU shows Denver of having a baro of 30.25 today, yet we are at 5280ft, so really we should be at 25.25, if it was using absolute.
<span style="font-weight: bold">Most commercial weather uses corrected pressure.</span> </div></div>
This is confusing, as station is different from corrected pressure.
Weather sources report corrected pressure, which is different from absolute (aka station) pressure.
If you're getting your pressure from a weather channel, radio, or airport, you're getting corrected pressure. In this case, you have to check the 'pressure is corrected' box, and also give the program an altitude.
However if you're measuring your station (absolute) pressure with a kestrel type device, then you enter that directly, don't check 'pressure is corrected', and no need to input altitude.
The verbiage surrounding this issue is highly confusing even for those who understand the principal.
-Bryan
Re: Weather Underground is it station pressure or ??
I do that every time because talking to people they think of what they get from the Commercial weather.
I tend to say Absolute when I mean uncorrected, but I have station stuck in my head..
you're right and I corrected it...
I constantly write it wrong because i sort of know what they thinking as the software stuff says, Absolute, and not Station.
I do that every time because talking to people they think of what they get from the Commercial weather.
I tend to say Absolute when I mean uncorrected, but I have station stuck in my head..
you're right and I corrected it...
I constantly write it wrong because i sort of know what they thinking as the software stuff says, Absolute, and not Station.
Re: Weather Underground is it station pressure or ??
One other cool thing is SAWOS, the only D/A reporting I know of. If your lucky enough to have one near.
example
https://potomacaviation.com/select.asp
graphic - https://potomacaviation.com/weather_index.asp?airportid=KEOS
One other cool thing is SAWOS, the only D/A reporting I know of. If your lucky enough to have one near.
example
https://potomacaviation.com/select.asp
graphic - https://potomacaviation.com/weather_index.asp?airportid=KEOS
