Special Weather Statement issued February 21 at 3:37AM EST by NWS

…Patchy Dense Fog through this morning… Patchy dense fog will continue across eastern Windham County, especially near the Connecticut River. Visibilities will drop to near or below one quarter of a mile at times. Motorists should be prepared to encounter areas of greatly reduced visibilities, allow for increased distance between vehicles and

Source: National Weather Service Alerts for Vermont