Dense Fog Advisory issued December 8 at 8:22PM PST until December 9 at 12:00PM PST by NWS Portland OR

* WHAT…Visibility one quarter mile or less in dense fog.

* WHERE…Central and Southern Willamette Valley, North and Central
Coast Range Valleys of Oregon, Lower Columbia River and Cowlitz
River Valleys, Tualatin Valley, Portland West Hills and Chehalem
Mountain, Inner Portland Metro, Willapa and Wahkiakum Lowlands,
North Clark County Lowlands, Inner Vancouver Metro, and South
Washington Cascade Foothills.

* WHEN…Until noon PST Monday.

* IMPACTS…Low visibility could make driving conditions hazardous.

* ADDITIONAL DETAILS…Areas of fog and dense fog is forming across
the south and central Willamette Valley this evening, where skies
have cleared. As clouds break up elsewhere, will see areas of fog
and dense fog form overnight.