I had been watching SS Cygni since the outburst during Stellafane this year. About 42 days have passed since. Well, tonight is the last night before we expect some heavy rain for a few days. Then the bright-of-the-Moon period. So I took one last look just now... and it has erupted!
I could barely see it in the 4 inch refractor last night. Tonight it is nearly as bright as the (8.5?) mag star just east of it. Brighter than the star preceding it to the west.
Glad I was able to catch it before the weather goes sour.