FGUS76 KPDT 021828
ESFPDT
ORZ049-050-502-503-507-509-WAZ029-030-522-523-040000-

Hydrologic Outlook
National Weather Service Pendleton OR
1128 AM PDT Sun Jun 2 2024

...AN ATMOSPHERIC RIVER WILL BRING MODERATE RAINFALL LEADING TO 
RISES ON STREAMS AND RIVERS SUNDAY AFTERNOON AND MONDAY...

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.

$$

GP