MetEd

They're not gone. Check Phoenix, AZ right now for example. Visibility of outflow boundaries on radar can depend on many factors including storm type and precip structure (convective vs stratiform), precip contamination (nearby precip can mask these boundaries), storm motion...

Another diagram

Radar beams are angled upward. The further you are from the radar, the higher up in the atmosphere the radar is detecting. Winds can be of opposite direction at the surface and aloft. Easterly winds at the sfc, westerly aloft.

troughs (downward motion). In the crests, air rises and cools, and if moist enough, clouds form there. This produces the rolling or wave like cloud patterns you see. It's pure fluid dynamics and meteorology. No external energy input required beyond normal atmospheric processes.

Yes they did - here's 23 years ago. Unfortuantely, you've got no interest in learning about meteorology or how the atmosphere works, which is a shame because it's pretty fascinating. Instead, it's much easier and less effort for you to push nonsense.

.@Windycom doesn’t have direct access to the raw data feeds from every radar network, so in some cases they rely on publicly available static radar imagery instead. For Jamaica, they appear to use the free radar images published by the Meteorological Service of Jamaica: metservice.gov.jm/daily-fore… The numbers visible on those images match the reflectivity (dBZ) color scale. Windy essentially downloads the radar image, attempts to isolate only the radar echoes, and then converts that information into vector data for display on their website. The challenge is that the images contain more than just radar returns - including color bars, labels, rang rings, etc. Removing those elements cleanly can be difficult without also accidentally removing or altering actual radar data. It also appears the color bar font may have recently changed to a bolder style, making it stand out more prominently and bypassing whatever method they are using to parse out the data compared to several month ago when this radar data was added: community.windy.com/topic/42…

If he knew radar had more products than reflectivity he could use those tools to diagnose those are non meteorological echoes, then do a little digging to find it's picking up windmills.

Wildly incorrect. Every individual radar is controlled by their respective Weather Forecast Office (WFO). There is a computer at each office (center back of the photo) that controls which Volume Coverage Pattern (VCP) the radar operates in. Meteorologists will adjust the VCP based on the weather - that's it. This is my photo from several years back when I was an intern.