The incoming system is expected to drop between one-half to 1.2 inches of new rain, especially at higher elevation, which will contribute to snow melt, creating the potential for several inches of runoff onto ground still saturated from the last rounds of precipitation.
In addition to increased river and small stream rises, field flooding and storm drain flooding, the new rainfall could also increase the chances of catastrophic mudslide, and contribute to sloughing in area that previously slid. Road flooding and possible washout is also a possibility.