On Sunday at 5:10 a.m. a special weather statement was issued by the National Weather Service until 7:15 a.m. for Eastern Columbia River Gorge of Oregon.
"Areas of fog will reduce visibility to under three quarters of a mile through 9 am and locally to less than one half mile. Be prepared for rapid changes in visibility over short distances this morning. If driving, slow down and allow plenty of distance ahead of you," states the weather service.

The Oregonian Public Safety

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