I made a rookie move... Always tip your awning at night!

Well, at least you learned half the story. Roll the awning completely in before locking up for the night. You got some rain and had a cup of coffee before the enlightment. If you want to add more adventure to this unfortunate, but typical learning experience, do it in the middle of the night with wind, rain and freezing weather.
The only good part of this is the DW will feel sorry for you.