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ACUS11 KWNS 091711
SWOMCD
SPC MCD 091711
MNZ000-SDZ000-NDZ000-092115-

Mesoscale Discussion 0171
NWS Storm Prediction Center Norman OK
1111 AM CST Sat Mar 09 2019

Areas affected...eastern North and South Dakota...western Minnesota

Concerning...Heavy snow

Valid 091711Z - 092115Z

SUMMARY...Heavy snow, with rates of one inch/hour, will continue and
expand east through mid afternoon.

DISCUSSION...An upper-level trough over the central and northern
Plains will continue to become more negatively tilted through this
afternoon as it pivots northeast, with increasing large-scale ascent
developing over the discussion area through mid afternoon. Cooling low/mid-level temperatures will allow a transition of mixed
precipitation types across southern portions of the discussion area
to all snow in the 18Z-20Z time frame as the warm nose shifts east.
RAP forecast soundings continue to depict favorable lift/saturation
within the dendritic growth zone developing for a few hours,
supporting snowfall rates of around one inch/hour.

..Bunting.. 03/09/2019

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...MPX...FGF...FSD...ABR...

LAT...LON 46349502 44949465 44289475 43959517 43899613 44109689
44239704 44489727 45359783 45949789 47439787 48139678
47649560 46349502



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