pCars faced hazardous driving conditions on I-90 near Snoqualmie Pass, Washington, on December 28.ppRoads remained slippery after traffic in the area was delayed up to 90 minutesa due to wintery conditions on December 26. A winter storm warninga was also issued for higher-level areas in the state, including Snoqualmie Pass, Newhalem, Darrington, Baring, Stevens Pass, and Skykomish.