Full Notification

* WHAT...Visibility one quarter mile or less in areas of dense fog. Localized visibility as low as a couple hundred feet.

* WHERE...Southwest Washington and Northwest Oregon valleys between the Coast Range and Cascade foothills, including the Willamette Valley, Clark County lowlands, and Interstate 5 Corridor.

* WHEN...Until 10 AM PST this morning.

* IMPACTS...Hazardous driving conditions due to low visibility.

* ADDITIONAL DETAILS...With temperatures near or slightly below freezing, roads may be slippery in spots, especially in outlying valleys. Untreated bridges and overpasses are most likely become icy. The rapid changes in visibility and potentially slick roads will make driving challenging in some areas through the Monday morning commute.

* AFFECTED AREAS: COAST RANGE OF NORTHWEST OREGON ... CENTRAL COAST RANGE OF WESTERN OREGON ... LOWER COLUMBIA ... GREATER PORTLAND METRO AREA ... CENTRAL WILLAMETTE VALLEY ... SOUTH WILLAMETTE VALLEY ... NORTHERN OREGON CASCADE FOOTHILLS ... CASCADE FOOTHILLS IN LANE COUNTY ... LOWER COLUMBIA AND I - 5 CORRIDOR IN COWLITZ COUNTY ... GREATER VANCOUVER AREA ... SOUTH WASHINGTON CASCADE FOOTHILLS

Instructions:

If driving, slow down, use your headlights, and leave plenty of distance ahead of you. Cyclists and pedestrians should wear bright or reflective clothing to improve the chances of being seen by others in dense fog.