MD 1659 CONCERNING BLIZZARD FOR CENTRAL/EASTERN KANSAS…NORTHWEST MISSOURI…FAR SOUTHEAST NEBRASKA…SOUTHWEST IOWA
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
from SPC Mesoscale Discussions http://bit.ly/1IzDtQu
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