While in the Loveland area, especially when visiting the mountains, make sure to drink plenty of water, even if you aren't doing anything physically exerting. Your body needs more water at this elevation and you may get altitude sickness. This may just give you a headache or may give you serious trouble breathing.
Its rare but the Big Thompson Canyon above Loveland has flooded before. These pictures were taken in September 2013 when excessive rains caused much destruction.