The snow across Iowa this morning is coming down heavy for a few hours with thunder mixed in. We will see bursts of heavy snow and thunder through the Great Lakes into the Northeast and PA as well. The NAM and HRRR but suggest that a band of heavy showers or thunderstorms develop across eastern Virginia into The Delmarva. Thunderstorms riding into the cold air will enhance snow rates across Northern NJ into New England. Most places will see 1-4 inches of snow but there will be locally 6 inch amounts.