The late spring and summer is typically a drier time of the year for the Pacific Northwest, but that has not been the case over the last month. Unusually strong, wet Pacific storms more characteristic of winter have been slamming into the region since May.
Several more storms are in line to bring additional rain to the region Sunday and later next week, threatening to cause more localized flash flooding and sending June rainfall totals rising closer to record levels.
Last month was one of the wettest Mays on record for some locations, and rainfall over the first four days of June has already surpassed the normal amount that typically falls throughout the entire month in several places.
For instance, Portland, Ore., has already picked up 1.61 inches from June 1-4. This amount already exceeds the normal monthly rainfall average, which is 1.59 inches.
Other cities in which rainfall totals the first four days of June have surpassed the monthly average include Eureka, Calif., and Eugene and Pendleton, Ore.
The rainfall has set new daily records over the last few days and even caused localized flash flooding and rock slides in parts of Idaho Friday morning.
Following a break from the rain Saturday, another storm will slam into Northwest Sunday. This system is expected to bring another 0.25 to 0.50 of an inch of rain to many areas across Washington and Oregon, adding to already high monthly rainfall totals.
As has been the case with the last few storms, flooding could result in some areas. This risk will be greatest in areas adjacent to streams and small rivers, as additional rainfall sends these water bodies rising rapidly and overflowing their banks.
Remember never to drive across a roadway covered with water, as doing so may put your life at risk. People living in flood prone areas should take appropriate action to protect their property this weekend.
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