MD 0077 CONCERNING HEAVY SNOW FOR PARTS OF UPPER MI
Mesoscale Discussion 0077
NWS Storm Prediction Center Norman OK
0648 AM CST Thu Jan 19 2023
Areas affected...Parts of Upper MI
Concerning...Heavy snow
Valid 191248Z - 191745Z
SUMMARY...Snow rates of 1-2 inches/hour will be possible for a few
hours this morning.
DISCUSSION...An area of moderate to heavy snow has been moving
quickly northward across central/northern WI early this morning,
within a strongly difluent upper-level flow regime to the northeast
of a deepening mid/upper-level cyclone that is moving eastward out
of the central Plains. This area of snow is moving into Upper
Michigan, where colder temperature profiles may support somewhat
higher snow ratios compared to farther south. In addition,
large-scale ascent will likely become maximized between 15-18Z, as
the mid/upper-level cyclone reaches peak intensity, and 1-2
inch/hour snow rates may develop and persist over portions of Upper
MI into the late morning hours, before a weakening trend commences
by early/mid afternoon.
..Dean.. 01/19/2023
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...APX...MQT...GRB...
LAT...LON 45578704 45958870 46318868 46458849 46698818 46828790
46808752 46768688 46718614 46678534 46548435 46148384
45918407 45818491 45698629 45578704
