Do you have the same issue if you follow the OP’s steps to reproduce it?
Different user reports huge lift in live weather over urban area allowing him to glide in a helicopter
Provide extra information to complete the original description of the issue:
It is an example of too huge (instead of converging - pt 2 of this bug report) thermal over urban area - example of “whole city rising” case as seen in 3d thermal visualization
If relevant, provide additional screenshots/video: