|Mesoscale Discussion 38|
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Mesoscale Discussion 0038
NWS Storm Prediction Center Norman OK
0202 AM CST Mon Jan 22 2018
Areas affected...portions of eastern NE...far southeast
SD...northwest IA and far southwest MN
Valid 220802Z - 221400Z
SUMMARY...Moderate to heavy snow with blizzard conditions will
continue across central NE and shift north and east through the
early morning hours. Snowfall rates and blizzard conditions are
expected to increase across the MCD area over the next few hours.
DISCUSSION...A potent midlevel low over KS will continue to eject
east/northeast early this morning. Latest water-vapor loop shows the
dry slot associated with this system shifting east/northeast across
far southeast NE and eastern KS with stronger forcing for ascent
lifting east/northeast across the central Plains. Currently, the
heaviest snow is falling in the deformation region along a band of
midlevel frontogenesis across portions of western into central NE.
Snow rates will increase to the east and north as the system
continues to lift northeast through the early morning hours. Snow
rates will approach 1 inch per hour, with locally higher rates at
Furthermore, strong northerly flow on the back side of a deepening
surface low over north-central KS will likewise increase from
southwest to northeast across the MCD area through the early
morning. Sustained winds around 20-30 mph with higher gusts will
result in dangerous blizzard conditions with very low visibility.
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 40319819 40259898 40459961 40969971 41749949 42519887
43309771 43779664 44119546 44309454 44289409 44169376
43969349 43429371 43109412 42319567 41719645 41039714
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