Administrators NorthGeorgiaWX Posted January 12 Administrators Share Posted January 12 MD 0045 CONCERNING HEAVY SNOW FOR PORTIONS OF CENTRAL AND SOUTHEASTERN NEBRASKA INTO EXTREME NORTHERN KANSAS Mesoscale Discussion 0045 NWS Storm Prediction Center Norman OK 0340 PM CST Thu Jan 11 2024 Areas affected...portions of central and southeastern Nebraska into extreme northern Kansas Concerning...Heavy snow Valid 112140Z - 120345Z SUMMARY...Heavy snow should increase into the evening hours, with 1-2 inch/hr rates possible. Heavy snow will be most likely in central Nebraska over the next couple of hours, becoming increasingly likely in southeast Nebraska in the 00-03Z period. DISCUSSION...A pronounced mid-level trough is ejecting into the Plains states, with a 120+ kt 300 mb jet streak overspreading the southern Plains. This places the central Plains in the left-exit region of the upper-jet (per 21Z mesoanalysis), resulting in plenty of divergence aloft. The low-level mass response has been for the surface low to intensify across the southern Plains. This supports an increase in surface-925 mb cold air advection beneath increasing intense 850-700 mb warm-air advection over central and eastern NE, where 700 mb frontogenesis is also now underway. Moderate snow has recently begun to fall in central Nebraska per surface observations, with snowfall rates expected to only increase with time as dynamic lift increases and the dendritic growth zone continues to saturate. Later this afternoon, the anticipated heavier snow bands may produce snowfall rates up to 1-2 inches/hour, where reduced visibility will also become a concern. Latest high-resolution model guidance consensus suggests that the heaviest snow should begin in the next couple of hours, and peak in intensity somewhere in the 00-03Z period, especially over southeastern NE. ..Squitieri.. 01/11/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...OAX...TOP...GID...LBF... LAT...LON 42230081 42039872 41419693 40749594 40189559 39849594 39749687 39739796 40089884 40609979 41350089 42230081 Read more View the full article Quote Link to comment Share on other sites More sharing options...
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