808 AM MDT Sun Mar 25 2018 Rock Springs and Green River-Flaming Gorge- Including the cities of Rock Springs and Green River 808 AM MDT Sun Mar 25 2018 .NOW... Areas of freezing fog remain in place this morning along western portions of Sweetwater County, including Interstate 80. Expect visibilities of a 1/2 or 1/4 mile in places. Motorists are encouraged to drive at appropriate speeds and to use low beam headlights. The fog is expected to lift by 10am.