NSW weather RADAR phenomena

I caught this last night after the reception on the TV went haywire. The first half of the video isn't too far out of the ordinary (for the Newcastle RADAR site)but the second half of the vid seems to be showing clouds dispersing in an almost perfect radius around the Woolongong RADAR installation.

These type of events are becoming very common right across Australia lately, every time rain clouds form they seem to disperse in an almost perfect radius around the RADAR installations.

My comments are being ghosted on youtube lately, they appear to me but when I check on a browser with no cookies they just aren't there. For some reason I can still post videos but no-one ever gets to see them and I can't communicate with anyone on yt to tell or post links, so I thought I'd post this vid here.