Good fishing water right now but we have some ugly weather coming. It looks like rain starting tomorrow and the 10 day has upper Satsop at 8.26 inches. Good news is that it is mostltly around an inch a day give or take but 10 days out something changes will have to wait and see what that is. Upper Chehalis looks to have about half the rain that Olympic side is to get so it looks to be about location and being mobil for fishing.

https://www.nwrfc.noaa.gov/rfc/

If your not used to NOAA's site right lower corner hit forecast precipitation then 240 hours. You can find the projected rain data that drives the forecasted flows.