Missiletm

I have a 2011 FFH, 85k miles. After a recent rain i noticed a drip below the rear bumper. Pulled up the trunk liner flap and noticed I had water under the spare and the jack storage compartment was full of water. My car was parked uphill in the driveway during the rain and it has a mild slope to the street. After drying everything out I put silicone sealant on the tail light fasteners thinking they might be the cause. Expecting more rain tonight so we’ll see if that was it. Anyone else have this problem? Thanks!