Winter Storm in Lewis, Missouri
Winter Storm January 1, 2021 · Lewis, Missouri
What the National Weather Service wrote
Widespread freezing rain moved into Lewis County after 4 am and persisted through 8 am, then a bit of a break before light snow developed and moved in around 3 pm. Overall a quarter of an inch of ice accumulation with up to seven tenths of an inch of sleet on top.
The wider storm
A surface low occluded prior to it reaching the forecast area with a new surface low developing and tracking further east. This lead to cooler surface temperatures and a cooler warm nose aloft, which impacted precipitation accumulations and types for portions of the forecast area. Wintry mix at the onset of precipitation changed over to freezing rain. The impacts of the cooler surface temperatures kept the precipitation type as freezing rain a bit longer and this lead to higher ice accumulation amounts across the forecast area. This was particularly notable in portions of central and northeastern Missouri, where up to four tenths of an inch of icing occurred. As the system exited region, the precipitation transitioned to some sleet and snow before ending.
Source: NOAA Storm Events Database, event 937630. Narratives are written by the National Weather Service forecast office that issued the report.
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