"CraigT" writes:

Here is a pic of the deck, the damaged area is on the far left. My grill is
under that striped cover on the right.

http://pics.bbzzdd.com/users/Squisher/IMG_6628.JPG

There is an outlet behind that area. It is a GFCI that controls half of the
kitchen outlets. I have put my hand all over that wall on the inside and
out, I feel no heat and see no damage on the inside including the outlet.

Do you have kids?

Somehow that area was subjected to heat.