Long time reader, infrequent poster. We're 3-4 miles due east of PTI. If, and I know this is a big "if". we were to get 20"+ of snow/sleet is there a risk of your roof collapsing? We've had 12" in the triad before(Dec 2017?) and a 12-15 year old roof held up fine. But what totals would become a risk for snow collapsing the roof? FWIW - we had our roof replaced this past summer.