We have a young willow oak in the backyard that started out with three trees growing from the same trunk system.
In May, I was mowing the lawn the and northern most extension of the tree was hanging really low, so I grabbed it, pulled lightly and there was a crack and the whole side came out and fell down. There were white spots all up the trunk and I figured that it had oak rot. We hacked it up and tossed it with the brush collection a few weeks later.
Fast forward to last night. We had a whopper of a storm come through and drop a few inches of rain in about 20 minutes. The storm started out just after dark and it began to blow and hail a bit. The power went out and stayed out for nearly four hours.
This morning as we were getting up, I went to look out the back window and see how much water collected in the pond. Then I looked to my left out the other windows and saw that the southern most tree and had fallen down. Luckily it was parallel with the fence and hit just shy of the patio cover.
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It was pretty close, but I'm glad that nothing serious happened.
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You can see on the right where the other tree used to be, and how this one is still attached a bit.
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We are going to find someone who will lend us a chainsaw and we will take the standing tree as well. If it were to fall, it would go right through a seection of fence. Part of me is saying let it fall, but I'd hate to pay the deductible for an 8" section of new fence.