ESFPDT Synopsis: An atmospheric river will bring abundant moisture to the region with an incoming system beginning this afternoon and continuing through Monday. Rainfall amounts of 1 to 2 inches are expected along the Oregon and Washington Cascade crest and in the higher mountains of northeast Oregon and southeast Washington. These amounts may be increased locally by snow melt from what remains of the high mountain snowpack. Where: The East Slopes of the Washington and Oregon Cascades, The Northern and Southern Blue Mountains, The Blue Mountain Foothills of Washington and Oregon, Wallowa County and the Grande Ronde Valley. When: Rain will arrive along the Cascades Sunday afternoon and in the eastern mountains late Sunday afternoon and evening. Rain will taper off Monday afternoon and evening. What: The precipitation and possible snow melt will lead to rises on area creeks, streams and rivers. Rivers are low enough that only the Naches River at Cliffdell and the Naches River at Naches are expected to reach bankfull Monday and only by a few inches at those locations. However, with the heavier periods of rain, rapid rises will be possible on smaller streams and creeks, especially in Wallowa County, and this is the main concern for the next couple of days. No further updates to this Hydrologic Outlook are anticipated.
Two atmospheric rivers are expected impact western Washington through Tuesday. Heavy rain is expected into Monday morning with the first while the second will bring additional rainfall later Monday through Tuesday. Snow levels will be high. This combination could push rivers in the watch area close to flood stage beginning Monday. Heavy rain may also lead to localized flooding in urban areas.
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WHAT: Flooding caused by excessive rainfall continues to be possible.
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WHERE: Portions of northwest and west central Washington, including the following counties, in northwest Washington, Mason and Skagit. In west central Washington, King, Lewis, Pierce and Snohomish.
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WHEN: Through Wednesday morning.
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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.
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ADDITIONAL DETAILS:
Two atmospheric rivers are expected impact western Washington through Tuesday. Heavy rain is expected into Monday morning with the first while the second will bring additional rainfall later Monday through Tuesday. Snow levels will be high. This combination could push rivers in the watch area close to flood stage beginning Monday. Heavy rain may also lead to localized 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, Lewis, Pierce and Snohomish. * WHEN...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
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.
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