Mesoscale Discussion 1216 NWS Storm Prediction Center Norman OK 0641 PM CDT Mon Jul 13 2020 Areas affected...far northeast CO...northwest KS...southwest NE Concerning...Severe Thunderstorm Watch 366... Valid 132341Z - 140145Z The severe weather threat for Severe Thunderstorm Watch 366 continues. SUMMARY...Severe gusts ranging from 60-80 mph and large hail are possible through 02 UTC. DISCUSSION...A broken band of primarily discrete thunderstorms is developing across the eastern-most tier of counties in northeast CO and into southwest NE early this evening. Surface analysis indicates a gradual increase in low-level moisture with farther east extent and 23 UTC observations show upper 50s dewpoints near the storms whereas McCook, NE dewpoints are in the middle to upper 60s. Ample high-level flow will aid in maintaining storm venting/organization as the thunderstorm activity gradually encounters a more moisture-rich boundary layer and larger CAPE during the 01-03 UTC period. Expecting additional storm development and upscale growth to occur over the next few hours with storms generally reaching a Colby to McCook line near 02 UTC. Severe gusts will become the primary hazard once storms grow upscale but large hail will be possible prior to this convective mode transition occurring. ..Smith.. 07/13/2020 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LBF...GLD...BOU... LAT...LON 39100231 40410251 41400125 40920044 38950124 39100231Read more
from SPC Forecast Products http://www.spc.noaa.gov/products/md/md1216.html
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