What's that spiral curve in the sky

[Peg o my heart]

Can anyone tell me what this is. Just got the latest Q400 update and tested at random airport (VTST). IIRC, the last change I made was the Thermal Vis., from Natural to Thematic. I have had this since days ago. Thanks beforehand

 

[ryanbatc]

Disable Thermals visualization

 

[Peg o my heart]

Disable Thermals visualization

Boy was that as simple as that.

Frankly, never tried that before and hardly heard people were talking about this in forums. Thank you

 

[Daube]

Indeed, this spiral shows where the thermals are. If you enter that spiral with a glider, you'll start gaining altitude.
Instead of disabling this, you could also switch to "Natural" setting. This will replace the green spiral with a pair of eagles soaring. They are hard to spot, because they are so small, so you can only spot them at very small distance, but they are nice to see

 

[Peg o my heart]

Indeed, this spiral shows where the thermals are. If you enter that spiral with a glider, you'll start gaining altitude.
Instead of disabling this, you could also switch to "Natural" setting. This will replace the green spiral with a pair of eagles soaring. They are hard to spot, because they are so small, so you can only spot them at very small distance, but they are nice to see

Will try that gliding tips, didn't know that before. Yes sometimes I spotted those birds but so far never had BASH
Thanks, wilco