Power line down.
Just when you think that you're getting used to the random arcing, the transformer will blow. I don't care how many times you've seen it; that'll still get your danged attention.
The hot wire literally catches the dirt on fire. The sand in the dirt begins making glass bubbles which remain on the ground until crushed the next day.
Live loose trailing wires in windy conditions are an ongoing problem. Blowing past the fire and police barricades to get to your family because you heard that there was "a fire in the yard" makes you a new source of problems. Prepare to meet Mr. Crankycop and his friend Firefighter SourFace. Seriously, you're better off stopping to ask the firefighter how best to approach your house. Sure you're worried about your family. But if we have to deal with a new problem, we're distracted from helping your family.
I love the smell of a freshly-popped road flare.
35 degrees? Not a problem. 35 and a 20 mph north wind? Kinda raises your skirts a bit.