× Hydrologic Outlook
Until 2024-06-02T12:00:00-07:00 • National Weather Service
ESFPDT Synopsis: An atmospheric river will bring abundant moisture to the region with an incoming system Sunday 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 1 to 2 inches of 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 early Sunday morning and in the eastern mountains late Sunday morning and afternoon. 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. An update will be provided Sunday morning.