A potent winter storm system is forecast to bring heavy snowfall to the Black Hills and surrounding areas starting early Tuesday, with impacts expected to last through Wednesday morning. The National Weather Service has issued a Winter Storm Watch for northeast Wyoming and western South Dakota, warning of snow accumulations between 6 and 8 inches in higher elevations. Local residents should prepare for potentially hazardous road conditions, particularly along Interstate 90, with visibility likely reduced due to snow and high winds.