Yep - it is going to get wet - from the National Weather Service:
NATIONAL WEATHER SERVICE SEATTLE WA
1055 AM PST Tue Feb 14 2017
...Flooding Possible Wednesday to Thursday for Rivers Flowing Off
of the North Cascades...
Rivers flowing off of the North Cascades are expected to rise
starting early Wednesday morning as a storm system brings heavy
rain to western Washington beginning Tuesday evening. With snow
levels at 7000 - 9000 feet, the storm is expected to produce 3 to
7 inches of rain over the North Cascades. If this amount of rain
falls, rises on the rivers in northwest Washington will have the
possibility of exceeding flood stage but at this time are expected
to stay below.