Fog is causing travel problems in the Spokane region and other parts of the Columbia Basin today. Visibility had been down to about an eighth of a mile at Spokane International Airports where some flights are being delayed on what is one of the busiest travel days of the year. However, the flight delays were blamed on snow in Minneapolis and heavy traffic through Seattle, not on the fog in Spokane, said Todd Woodard, spokesman for the airport here. Flights can land at Spokane International with visibilities as low as 600 feet. Operations staff reported that visibility was general about a quarter mile on the runway/Mike Prager, SR. More here.