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ACUS11 KWNS 251700
SWOMCD
SPC MCD 251659
MOZ000-IAZ000-KSZ000-NEZ000-252200-

Mesoscale Discussion 1659
NWS Storm Prediction Center Norman OK
1059 AM CST Sun Nov 25 2018

Areas affected...Central/eastern Kansas...northwest Missouri...far
southeast Nebraska...southwest Iowa

Concerning...Blizzard

Valid 251659Z - 252200Z

SUMMARY...1-2 inch/hr snowfall rates expected to continue for
several more hours across the area, with occasional blizzard
conditions likely northwest of the surface low.

DISCUSSION...A 998 mb surface low, currently located across
southwest Missouri, is expected to continue moving northeast in
tandem with a pronounced upper-level shortwave trough. The
upper-level trough will continue to deepen throughout the afternoon,
with 500-300 mb relative wind maxima expected to traverse the base
of the trough this afternoon. As a result, large scale ascent is
expected to increase across the area, where strong 925-700 mb WAA
and moisture advection ahead and to the north of the surface low are
currently underway.

Increasing divergence aloft associated with the approaching
aforementioned upper-level wind maxima will encourage further
deepening of the surface low, with increases in surface wind speeds
likely. Blizzard conditions have already been reported across
several portions of central/northeast Kansas into far southeast
Nebraska, and these conditions are expected to continue across much
of the outlined area as the low continues eastward. Areas roughly
from Washington to Kingman County Kansas westward may continue to
experience near white-out conditions for a few more hours, but the
threat is expected to clear as snow moves out of the area.

Otherwise, 1-2 inch/hr snowfall rates should pivot eastward across
far northeast Kansas into northwest Missouri and southwest Iowa,
along the axis of a moisture conveyer belt, where low-level warm
air/moisture advection should continue to saturate the
dentritic-growth layer.

..Squitieri.. 11/25/2018

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

ATTN...WFO...LSX...DVN...DMX...EAX...OAX...TOP...ICT...GID...
DDC...

LAT...LON 37389637 37379819 37539933 39149858 40259698 40729631
41119438 41399290 41009233 40309223 39119280 38099510
37389637



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