I see where some of the automated stations in the Oregon Coast Range and Mt. St. Helens area have recorded 24 hour rainfall amounts of 10 to more than 13 inches of rain. Why are rivers expected to crest by late tomorrow morning, before the rains may have yet ceased?

Hey Dan.. good to hear from you. I suspect it's because the rainfall rates will drop off, and because we're not melting snow, the rivers respond quickly to the rate of rainfall. If the river or stream is downstream from a dam, then dam releases will also impact the crest.

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