At 2:34 a.m. on Wednesday, the National Weather Service released a freezing fog advisory in effect until 10 a.m. for Foothills of the Northern Blue Mountains of Oregon.

"Visibility generally between one-half mile and one mile in fog and freezing fog," can be expected according to the weather service. "Webcams show reduced visibilities on portions of I-84, SR-204 and SR-11 near Pendleton, Athena and Walla Walla and SR-24 and I-82 between Sunnyside and Yakima."

"Low visibility could make driving conditions hazardous," explains the weather service. "If driving, slow down, use low beam headlights, and leave plenty of distance ahead of you."

Understanding freezing fog advisories

When a freezing fog advisory is in effect, it indicates that fog is developing while surface temperatures hover a

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