Blight

In my case it appears to be Early Blight as opposed to the Late Blight that is in the process of wiping out the tomato crop in the rest of the Northeast.

I've had Early Blight before, but usually it holds off until September or so. The frost usually kills them way before the blight.
We've just had so much rain. I don't know a single person who isn't affected by it. One friend has lost 70 tomato plants. I raised these from seed. They are from heirloom seed. Apparently I need to try a blight resistant hybrid next year.
It's even affecting the fruit. I don't know if you can see the brown around the stem. The tomato is rotting off the stem.
These are not ripening, they're rotting on the vine.

I've been putting off facing the inevitable. It's time to rip the entire mess out and have a good cry. There will be no fresh tomatoes from my garden this year. I'm thinking that next year I'll build a new bed with fresh soil. Hybrids will probably be on the menu for disease resistance. The spores need to work their way out of my soil. Despite careful rotation (these tomatoes are where the squash were last year), my soil is infected throughout the garden. It will take a good 3-4 years to get the spores out of the soil.