Containment for the Riverside Fire in Clackamas County was listed this morning at 31%, with acreage up slightly to 138,027. Strong winds are expected to increase today, with gusts up to 50 mph at higher elevations capable of downing fire-weakened trees and snags. Moderate rain is expected Wednesday evening and Thursday morning that could result in debris flows or rockslides over the burn scar areas. Additional rain and increased winds are expected through Friday and perhaps early Saturday.