Winter Storm — Gasconade, Missouri

2021-01-01 · Gasconade, Missouri

Event narrative

Widespread freezing rain moved into Gasconade County after midnight and persisted through 6 am, then a bit of a break before light snow developed and moved in around Noon. Overall a quarter of an inch of ice accumulation with up to half an inch of snow on top.

Wider weather episode

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_id 937629. Narrative written by the NWS forecast office that issued the report.