Two atmospheric rivers are expected to arrive Sunday through Tuesday. Heavy rain is expected Sunday morning into Monday with additional rainfall through Tuesday. Snow levels will be high. This combination could push rivers in the watch area close to flood stage beginning on Monday. Heavy rain may also lead to flooding in urban areas. * WHAT. Flooding caused by excessive rainfall continues to be possible. * WHERE. Portions of northwest and west central Washington, including the following counties, in northwest Washington, Mason and Skagit. In west central Washington, King, Pierce and Snohomish. * WHEN. From late tonight through Wednesday morning. * IMPACTS. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS. - http://www.weather.gov/safety/flood