Unit 42 leak

I arrived home just as the storm on the 3rd of May was getting started. I parked my car, and was walking to the elevator past the (closed) Unit 42 garage when I could hear a significant leak. With no mechanism to open that door (the unit is still unoccupied), I filmed a video through the vent above the garage door. I couldn’t see what I was filming, but with the light on I hoped to capture something.

I can definitely hear water leaking, and I can see shiny wet patches against the far wall. What do you think?