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Mesoscale Discussion 2181
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   Mesoscale Discussion 2181
   NWS Storm Prediction Center Norman OK
   0655 PM CST Sat Nov 30 2019

   Areas affected...Portions of east-central Minnesota...northern
   Wisconsin...and western Upper Peninsula of Michigan

   Concerning...Heavy snow 

   Valid 010055Z - 010700Z

   SUMMARY...Favorable deep-layer ascent as an upper-level system
   slides eastward will produce 1-2 inch per hour snow rates. The
   highest rates will occur along shores of Lake Superior due to lake
   enhancement.

   DISCUSSION...An upper-level low now over the mid-Missouri Valley
   will slowly progress to the east this evening. Deep-layer ascent is
   increasing across northern Minnesota and northern Wisconsin with
   several surface stations now reporting moderate snowfall. Areas of
   east-central Minnesota, northern Wisconsin and the western Upper
   Peninsula of Michigan are expected to remain in a favorable area of
   ascent for the next several hours. Snowfall rates of 1 inch per hour
   will be possible in these areas. Higher snowfall rates, perhaps near
   2 inches per hour, will be possible in areas along the Lake Superior
   shore where lake enhancement/increased surface convergence will
   occur.

   Snowfall rates are also expected to increase in parts of
   north-central and northeastern Wisconsin; however, the profile will
   need to cool in the 850-700 mb layer before precipitation will fully
   transition over to snow. Furthermore, these areas are less likely to
   see favorable ascent for as long as points to the northwest.

   ..Wendt.. 12/01/2019

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

   ATTN...WFO...MQT...GRB...DLH...MPX...

   LAT...LON   46859358 47189270 47229237 47299148 47119015 46908882
               46208865 45688966 45659080 45869240 46079322 46429372
               46859358 

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Page last modified: December 01, 2019
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