Here are some of the rain totals from the weekend deluge. If you add the 7.40" of water added from snow melt at North Fork of Bull Run to the 9.51" of rain at Timberline, that's the equivalent of almost 17 inches of rain in some spots on Mt Hood! Yes, the two locations are about 20 miles apart. But it's still a lot of water, and the Sandy and Salmon Rivers responded accordingly, no matter how you add it up.
Here are some more weekend rain totals.
Interestingly, Portland airport is only about a half-inch above normal with 3.38 inches for January rainfall to date. It's conceivable that it ends the month with below average precipitation. Contrasting that is Cougar, WA, just southwest of Mt St Helens. From January 1-14 it received15.62 inches of rain. Rain Tuesday will be followed by more dry weather.
KGW Chief Meteorologist