Interstate Corridor, Late Afternoon, During a Fast-Moving Winter Storm For drivers on the westbound lanes of the interstate, the snowfall had begun as nothing more than a light dusting — the kind that coats windshields but rarely slows traffic. Visibility dipped, but not enough to cause alarm. At least, not at first. Dashcams from multiple vehicles show the flakes thickening over the course of just a few miles. Roadside trees blur into a grey curtain, and the pavement gradually transforms from w