First impressions are of wind damage but noting the positions of the moved and broken items it appears more complicated.

Consider the following image: The plastic corrugated sheet was covering the wheel barrow weighted with two pieces of timber, one of which can be seen to the left in the foreground. So wind damage is the first idea that comes to mind. But immediately there is an anomaly the lightweight bits of plastic have been blown in one direction and the wood in another. Sure the wind could have moved the plastic later but unlikely in such a manner.

The next image shows an upright post that has been displaced. The post has a mortice and tenon fitting at the top and is weighted by a floor holding solar panels. The base of the post (red) is some distance from it's setting (green) indicating some force needed to move it. It had to be hit really hard to dislodge it with continuing force to move it a few feet, something only wind seems unlikely to achieve.

The third image shows the post horizontal with the second piece of timer that had been on the plastic behind the post.
I imagine it is possible for a strong gust to flip the plastic anf throw the timbers which could have knocked down the post. Only as i write this am I coming up with a possibility.

A very strong gust flipped the plastic and in a split second one piece of timber was thrown in the bush, the send one hit the post which fell and moved some feet to land on the first timber to land, the second timber then fell to the ground as in image one. The only outstanding issue is that all the broken bits of plastic flew in the opposite direction. So what some later gust picked them all up and moved them through 180° ??? The only problem is that all other loose and lighter bits of canvas, plastic, plywood and trash had not been moved at all ???