MD 1199 CONCERNING TORNADO WATCH 322… FOR SOUTHEASTERN WYOMING…EASTERN COLORADO…WESTERN NEBRASKA…AND FAR NORTHWESTERN KANSAS
Mesoscale Discussion 1199 NWS Storm Prediction Center Norman OK 0623 PM CDT Sun Jul 29 2018 Areas affected...southeastern Wyoming...eastern Colorado...western Nebraska...and far northwestern Kansas Concerning...Tornado Watch 322... Valid 292323Z - 300030Z The severe weather threat for Tornado Watch 322 continues. SUMMARY...The severe threat continues across WW 322. DISCUSSION...Southeastward-moving thunderstorms continue to migrate across WW 322 at this time. Favorable shear/buoyancy profiles have supported occasional tornado and very large hail reports - especially with a cluster of supercells migrating across northeastern Colorado. Over the past hour or so, one dominant high-precipitation supercell has evolved over Morgan and Washington Counties and an expansive cold pool has spread northwest from this storm across much of Weld County and vicinity. This may signal the beginning of upscale growth advertised by the past several runs of high-res models. Upstream (in southeastern Wyoming), cellular storms may continue to pose a threat for very large hail and a tornado or two given favorable shear profiles and storm mode. Eventually, ongoing storms will move top the remnant cold pool across northeastern Colorado, which may lessen the overall tornado threat but still support large hail in the strongest cores. Farther south, convection near/west of Pueblo, CO has exhibited brief supercellular characteristics and necessitated a spatial expansion of the WW. Hail, damaging wind gusts, and tornadoes may evolve from any dominant storm that can materialize in this region. ..Cook.. 07/29/2018 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LBF...DDC...UNR...GLD...PUB...BOU...CYS...RIW... LAT...LON 43420632 43540561 43510433 43030318 41970228 40860186 39760147 38570158 38260164 38040218 37650308 37570419 37830505 38250538 38850533 39700513 40470542 41020617 41940652 42850659 43420632
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