...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... ...Visibility below one quarter mile with patchy dense fog. ...Portions of eastern Oklahoma and northwest and west central Arkansas. ...Until 10 AM CDT this morning. * IMPACTS...Visibilities are expected to be reduced to less than one quarter mile by the dense fog, creating hazardous driving conditions. ...Be on the lookout for sudden changes in visibility. The patchy nature of the fog will drop visibilities quickly in a short distance. In addition, visibilities may become severely restricted in valley areas and near rivers, lakes and bridges..
