South Dakota Mesoscale Discussion

Areas affected…portions of northern/western Minnesota…eastern
North Dakota and northeast South Dakota

Concerning…Heavy snow

Valid 291046Z – 291445Z

SUMMARY…Snow will increase in intensity through 15Z with rates of
one inch/hour possible.

DISCUSSION…Upper-level low pressure was gradually deepening in the
vicinity of the KS/NE border at 10Z while moving slowly northeast.
Broad surface low pressure was located over Iowa with a warm front
extending east/southeast across northern IL. An increase in
large-scale lift is expected across the discussion area through mid
morning as heights fall with the approaching/deepening system,
coupled with low-level warm advection in the 850-700 mb layer. As a
result, snow intensity should increase over the next few hours with
rates of one inch/hour possible through 15Z.

..Bunting.. 12/29/2019

…Please see for graphic product…


LAT…LON 44869654 44599704 44769748 45249776 45769799 46759821
47359816 47879800 48559730 48819608 48889513 48519332
47939201 47339205 46959338 46509527 44869654

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