I agree
@SouthAussie. Here is a little weather tutorial as it may relate to this tragedy.
From investigators' statements, the original idea this was a waterspout (tornado over water) event switched to a
downdraft/burst event.
"
Downbursts are particularly strong downdrafts within thunderstorms... a
downburst is a strong downward and and outward gushing
wind system that emanates from a point source above and blows
radially, that is, in straight lines in all directions from the area of impact at surface level... Capable of producing damaging winds....
These usually last for seconds to minutes." (see image).
View attachment 527966
A sub-category of the downburst is a
microburst. Check out the video in that link!!
Of course this presumption by invesigators is confirmed (IMO) by the historical Weather Underground data for that area 19-8 at ~3:50 am per my post up thread, and this screenshot.
View attachment 527967
All IMO