They did not mention Pittsburgh. If you stay away from flash flood areas you will be safe. Tornadoes are minuscule. Earthquakes are minor if at all. Blizzards can be a problem, but after a couple days cleared. I am surprised Pittsburgh did not make the list.
I like the burgh.
3 rivers, good beer, good sangwiches.
Nice fishing and scenery.
My only problem with PA is the winters can be harsh and the roads make it the “Land of Orange Barrels”
The food sure is good.
The Taxes suck.
Pittsburgh usually fares well on lists not because of its superlatives but because of what it lacks. Back in the 80's Pittsburgh was always near the top of the Places Rated Almanac and was the champion in 1985 and again in 2007. In the 1985 rankings, Pittsburgh didn't excel in any one of the metric but avoided the negatives -- notably crime and cost of living.
I was born there and spent my youth in the 'Burg. As far as the weather is concerned, the only real downside as cited in the Almanac was the number of cloudy days. They (Rand McNally) applied positive points for regions with a lot of sunshine.