I like the concept! The art and the music are on point for the gnomey vibe, kudos on the art, many assets for a short time! :D
I could finish, and the storm did show up fine! Sadly only 2 of my buildings survived hahah. Maybe a timer could be a good visual clue (besides the ominous SFX) for when the storm will arrive and how much time is left
As someone else mentioned, I didn't seem to be able to do the Stone upgrades, but overall, good job!