Special Weather Statement issued August 10 at 5:37AM EDT by NWS

…Patchy Dense Fog through 9 AM this morning… Patchy dense fog will occur through 9 AM this morning across eastern New York and adjacent western New England. Visibilities may be reduced to one quarter of a mile or less, particularly within some river valleys, including the Connecticut River Valley in southeast Vermont, and the Housatonic Valley in Berkshire

Source: National Weather Service Alerts for Vermont