MD 1087 CONCERNING SEVERE THUNDERSTORM WATCH 283…284… FOR PORTIONS OF NORTHEAST KANSAS INTO WESTERN MISSOURI
Mesoscale Discussion 1087 NWS Storm Prediction Center Norman OK 0243 PM CDT Thu Jul 19 2018 Areas affected...Portions of northeast Kansas into western Missouri Concerning...Severe Thunderstorm Watch 283...284... Valid 191943Z - 192115Z The severe weather threat for Severe Thunderstorm Watch 283, 284 continues. SUMMARY...A corridor of damaging winds will remain possible near I-70 from Topeka eastward this afternoon. These storms are expected to reach western portions of the KC metro around 4pm. DISCUSSION...A cluster of severe thunderstorms, capable of damaging winds at times approaching 75+ mph, is progressing east around 45 mph along the I-70 corridor this afternoon. Ahead of this cluster, visible satellite illustrates towering cumulus, suggesting a sufficiently unstable downstream environment. This is supported by the 18Z TOP sounding, which sampled steep low/mid-level lapse rates and ample northwesterly 700-500mb flow. Furthermore, dry air beneath 500mb will enhance evaporative cooling within downdrafts already augmented by the aforementioned strong flow. All of these factors will likely maintain a threat of severe wind gusts (some possibly 75+ mph) reaching the KC metro (especially western portions) around 4pm. ..Picca.. 07/19/2018 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...EAX...TOP...ICT... LAT...LON 39559684 39629493 39439459 38969444 38359454 38289513 38539656 38899710 39239712 39559684
from SPC Mesoscale Discussions http://bit.ly/2uOZLx1
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