Dense Fog Advisory

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

* WHERE...Lower Columbia Basin of Washington.

* WHEN...Until 9 AM PST this morning.

* IMPACTS...Low visibility could make driving conditions hazardous.

* ADDITIONAL DETAILS...Areas of dense fog have been observed along the Columbia Basin of Washington including but not limited to: Interstate 82, WA-240. and Route 395. Within fog, visibilities as low as one-quarter mile are expected to persist through the overnight. Use extra caution while traveling as visibility can change quickly. If fog is encountered, use low-beam headlights and keep plenty of space between you and other vehicles.