This was a really cute game! I thought the art was very charming, and I really liked the idea of the fences spawning and interlocking like Tetris pieces. That's a really cool idea!
One quick thought I had is that it would be cool if the storms spawned and approached from different directions, instead of just coming from the right. When the storms spawned for me, I tended to just stack the fences in front of the patches of soil to the right so that the storms would all hit those fences first. This meant I didn't really have to create an interlocking fence as much as I did just pad against the storm to the right.
Awesome work!