National Weather Service United States Department of Commerce

Severe Weather in the Plains; Heavy Rainfall in the Northern Plains, Tennessee Valley and Southeast

Numerous severe thunderstorms with a potential for 60-80 mph winds, along with tornadoes (some strong), and large to very large hail are expected across the northern and central Plains through tonight. Heavy to excessive rainfall may bring a flooding threat to parts of North Dakota and Minnesota, and from the Ohio Valley to the Southeast through tonight. Read More >

Overview

An upper level wave intensified as it moved into the the Ohio Valley region. Temperatures had already fallen well below freezing ahead of it, due to a cold front sweeping through the region the day before. Dry air in the low levels quickly saturated and snow rapidly developed during the early to mid morning on January 6th. Temperatures in the upper teens to lower 20s allowed snow ratios to be higher than normal, resulting in a dry fluffy snow. These cold temperatures also allowed snow to quickly accumulate on all surfaces including area roads. Shortly after 8 AM, nearly 25 semi trailers were reported off the road along I-55 in New Madrid County, Missouri. Snowfall rates of 1 inch per hour occurred across western Kentucky during the morning and early afternoon. The snow ended from west to east through the afternoon, exiting our far eastern counties by 5 PM.
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