@RaddMann @iCharge @Randy Spencer
OK, got 2019.12.1.2, tested things, and I believe the browser has a bug with requesting the user permission to use the location data.
What I see is that if the browser is already running, and you bring up TeslaWinds.com, the browser will not ask the user for permission to use the location data, and what you'll see in the browser is that the wind and elevation data won't load (it will show 0.0 for wind direction, and -1000 feet for elevation).
What you can do at this point is close the browser window completely using the X in the upper left corner. Once it's closed, then open it again, and the site will reload, and now the browser will ask for your permission to use location data. Click Allow, and then the site will load and run normally.
I think you can use this procedure for any site that needs location data, like TeslaWaze. If this bug shows up there, TeslaWaze will load the bottom controls (gear icon for settings, + and - icons for zoom), but will not load any map tiles. Close the browser, open it again, the page reloads, the prompt for location data permission comes up, click Allow, then the site works normally.
Tesla will need to fix the bug in the browser code, but until then you can use this work-around for any site that needs location data.