* WHAT...Heavy snow possible. Total snow accumulations 8 to 14 inches, except locally up to 20 inches in the Upper Cottonwoods. * WHERE...The Wasatch Mountains, and Western Uinta Mountains. * WHEN...Early Thursday morning through Friday afternoon. * IMPACTS...Travel could be difficult at times. Traction law restrictions may be enacted. * ADDITIONAL DETAILS...- A period of accumulating snowfall, heavy at times, is expected to accompany a cold front passage Thursday morning. Accumulating snowfall is expected to produce travel disruptions, especially for mountain routes. - A lull in activity is expected Thursday afternoon before wrap around showers move back in to the region late Thursday into Friday morning.