One October night in 201, fire broke out at 2 am in a quiet neighborhood in Omaha. The family had turned in without completely extinguishing the fire still burning in a fire pit on their wooden deck. Burning coals fell through the rusted bottom of the fire pit and caught the deck on fire. The fire spread quickly, and the whole house was a loss, but the family got out in time.
I was able to find references to a number of deck fires online. I am sure there are many, many more that I did not find.