Mesoscale Discussion 0007
NWS Storm Prediction Center Norman OK
0727 AM CST Sun Jan 05 2025
Areas affected...east-central Missouri...parts of southern
Illinois...southern Indiana...and parts of central Kentucky.
Concerning...Heavy snow
Valid 051327Z - 051730Z
SUMMARY...1+ inch per hour snowfall rates are expected this morning.
DISCUSSION...Light to moderate snowfall has developed within a
swath from central Missouri to central Kentucky this morning with a
few heavy snow observations appearing recently in southern Illinois
and southern Indiana. Expect moderate to heavy snow in a relatively
narrow corridor north of the freezing rain from east-central
Missouri to parts of central Kentucky. In addition to the radar
depiction and surface observations indicating heavy snow, the 12Z
HRRR shows a swath of significant accumulation between 13Z and 17Z.
By midday much of this area will switch to freezing rain with the
heavy snow swath shifted farther north during the afternoon as warm
air advection strengthens ahead of the approaching surface low.