MD 0074 CONCERNING FREEZING RAIN FOR PORTIONS OF NORTHWEST OKLAHOMA NORTHEAST ACROSS PARTS OF CENTRAL AND EASTERN KANSAS
Mesoscale Discussion 0074 NWS Storm Prediction Center Norman OK 0421 AM CST Tue Feb 20 2018 Areas affected...Portions of northwest Oklahoma northeast across parts of central and eastern Kansas Concerning...Freezing rain Valid 201021Z - 201315Z SUMMARY...Freezing rain is forecast to continue to increase across the discussion area over the next couple of hours. DISCUSSION...Latest composite radar loop shows thunderstorms blossoming across northwest Oklahoma, in line with output from several CAMs over the past couple of hours. With the forecast development now materializing, confidence has increased that an area of moderate to occasionally heavy freezing rain will spread northeast across south central and then into eastern Kansas over the next few hours. The precipitation seems to be developing in response to frontogenetic tightening of the frontal gradient, and with some of this rainfall spreading atop surface temperatures in the upper 20s to low 30s, ice accumulation -- especially on exposed/elevated surfaces -- can be expected. Northward/northeastward extent of the risk remains somewhat in question, as models differ as to exact location of heaviest precipitation, and thus the discussion area will not include the Topeka and Kansas City areas due to the uncertainty. ..Goss.. 02/20/2018 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...TOP...ICT...OUN...DDC... LAT...LON 38829553 38559541 38009667 37559718 36749788 36229909 36249958 37049888 38389801 39029660 39019607 38829553
from SPC Mesoscale Discussions http://bit.ly/2Fi9wZO
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