3.5 inches here, sounds pretty average to me.

Control is member zero of the 50 perturbations that can range from "what if we discounted how this small low pressure builds in the lee of a mountain range" to "what if surface cooling was slower at night". Last I checked they can change season to season, but someone who keeps up on their monthly journal and what vectors they use can chime in. This is also effectively the initialized state and ran with a lower atmospheric and terrain resolution, this is also why ensemble means at the surface can get fun. The Operational is ran with additional physics and at a higher resolution.

1870S REDUX?!?! ITS COMING!

https://www.ecmwf.int/en/about/media-centre/focus/2024/plans-high-resolution-forecast-hres-and-ensemble-forecast-ens#:~:text=From IFS Cycle 50r1%2C planned for October 2025%2C,members%2C in line with the agreed dissemination schedule. The HRES is still produced and disseminated. It is meteorologically equivalent to the ENS 'control', but due to some technical and configuration differences, it does not provide completely identical outputs. The HRES runs for 10 days, while the ENS control runs for 15, and the HRES is disseminated earlier than the full ensemble forecast. Our aim is to stop using the term ‘high-resolution forecast’, or HRES, as all members of the ensemble are now also at 9 km horizontal resolution. For the next IFS upgrade, Cycle 49r1, planned for October 2024, the HRES and the ENS control are being made bit identical. Both will run to 15 days for 00 and 12 UTC. From IFS Cycle 50r1, planned for October 2025, we will stop producing the current ENS control, and the data stream that is currently called the HRES will be called ‘ENS control’ instead. This single, unperturbed forecast will continue to be made available earlier than the ensemble perturbed members, in line with the agreed dissemination schedule.

It has been really bad down this way, but things have finally gotten pretty wet compared to earlier in the season.