Heavy Rain in Multnomah County, Oregon
Heavy Rain October 31, 2015 · Multnomah County, Oregon
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Heavy rain combined with clogged drains from leaves resulted in urban flooding. The Portland Fire and Rescue received 32 calls in regards to street flooding, and assisted travelers in 5 cars from their stalled or trapped cars to dry land. Four roads were closed in the area for high water, and several Max lines were cancelled due to flooding under bridges. Thirteen Max trains were damaged by water and will be out of service for up to 2 weeks. One roof collapsed from the weight of rain water after the roof drains had been clogged, and several homes or businesses had flooded basements. A tree had fallen onto and damaged a parked car.
The wider storm
A slow moving cold front associated with an atmospheric river of subtropical moisture produced heavy rain across Northwest Oregon that resulted in urban flooding for the Portland metro area. High rain rates and clogged drains (from shedding of tree leaves) contributed to the flooding.
Began near Gresham (45.5000, -122.4300).
Source: NOAA Storm Events Database, event 601425. Narratives are written by the National Weather Service forecast office that issued the report.
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