Each run is a new ensemble with a control run

That would be a good idea. Maybe somebody knows for sure.

Question about the weeklies. IIRC they now run the 46 day forecast every day instead of 2x weekly. And they have a 'running" ensemble of recent runs that act as an ensemble. Is that correct?

https://en.m.wikipedia.org/wiki/Great_Flood_of_1862

I wonder if mixing will be lackluster away from the terrain given no pressure rises or cold/dry advection. Also the gradient peaks nocturnally. Tim’s house might be fun, though.