Tuesday rainfall through 4:00 pm has reached .41" at PDX, which is a record amount for the calendar date. Other records include Troutdale where .57" fell and Salem, where .10" was a new record in a usually dry month!
An upper low center will pass overhead Wednesday bringing widespread rainfall reaching .50" or more. Hail and thunderstorms will be possible. The low center will also lower snow levels on Mt. Hood to near 6,000' by late afternoon. Timberline Lodge could see a mix of snow.
It is possible that 2-day rainfall over Portland will reach nearly an inch, which would be well above normal for our usual driest month of the year. July has seen only a trace of rain in several years. Average monthly rainfall is less then 3/4 of an inch.
Dry weather will return during the day Thursday.