While local streams like Longfellow Creek in West Seattle and the Duwamish River are less likely to flood in a serious way, outlying rivers and streams are worth keeping an eye on in the wake of a Flood Watch issued by the National Weather Service beginning Sunday. Heavy rains are set to start Sunday night.

Information from National Weather Service

Two atmospheric rivers are expected to arrive Sunday through Tuesday. Heavy rain is expected Sunday night into Monday morning with additional rainfall through Tuesday. Snow levels will be high. This combination could push rivers in the watch area close to flood stage beginning Monday. 

FLOOD WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH WEDNESDAY MORNING...

* 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 Sunday morning 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

PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.