What is the altitude - simple
I see several answers to my question that I don't understand. I fly a weight-shift trike, don't make long cross-countries, and have no idea about isobaric surfaces and the like. I just need a simple answer. My home airport is at 5,800'. If the slider is at Surface I assume that's 5,800 MSL. If I move the slider to 5,000' is that below ground level and all the winds shown are meaningless? What if I move the slider to 6,400'? Most of our flying is for sight-seeing and close to the ground but we do occasionally go to 8,000' MSL to practice maneuvers.
Your home airport is at 5800 ft.
If model's altitude (for the airport) is at 5800ft, then everything is OK
and if you move the slider at 6400 ft, then you'll see winds at 6400 ft.
If you want to know model's altitude for your airport,
you have to use "sounding".
In the following image airport's altitude is 2008ft and the model "thinks" it is at 1712ft.
So the winds are some 300ft off.
..... it may help https://community.windy.com/topic/4831/aviation-winds-aloft-on-airgram/5
I'm feeling really dumb about this and I still have questions. 1 - If I have the slider at anything BELOW 5,800 ft. what am I seeing about the wind? 2 - If the model altitude is 5,350' and the airport is 5,800' what altitude are the winds being shown with the slider at 6,400'? 6,050 or 6,850? 3 - This is from the Windy community: "The grey line shows the temperature of a parcel of surface air and how its temperature would change if it was lifted." What does that mean? Also, there are two grey lines.!
- The mean wind in a layer from surface to 450ft height above ground level.
- With the slider at 6400', you see winds at a layer aprox. 6800 ft.
Generally model's winds for your location (elevation 5800') are 400ft off.
As you go upwards, this difference decreases.
- About grey lines, please read