Sometimes when I zoom in and zoom back out, the moving lines showing wind speed and direction do not adjust to the larger map size and remain concentrated. Once I had that, plus some lines showed up on one side of the screen:
Zoom out to max. Zoom in to a few hundred miles up/down. Zoom out. I can get other interesting patterns. And it certainly isn’t specific to my normal location:
Welcome to the world of software development. Some bugs are just plain difficult. Wind streamlines are a particularly complex feature of Flowx, possibly the most complex. I think I might need to rewrite part of it - not something I look forward too.