MD 1179 CONCERNING TORNADO WATCH 315… FOR SOUTHEAST WYOMING…SOUTHWEST NEBRASKA…EASTERN COLORADO AND WESTERN KANSAS
Mesoscale Discussion 1179 NWS Storm Prediction Center Norman OK 0623 PM CDT Fri Jul 27 2018 Areas affected...southeast Wyoming...southwest Nebraska...eastern Colorado and western Kansas Concerning...Tornado Watch 315... Valid 272323Z - 280100Z The severe weather threat for Tornado Watch 315 continues. SUMMARY...Threat for a couple tornadoes, isolated large hail, and damaging wind will persist across WW 315 next couple hours. A more substantial severe/damaging wind threat may evolve over the southeastern portion of WW 315 and into severe thunderstorm watch 317 from east central Colorado through western KS into mid-evening. DISCUSSION...Early this evening, numerous storms are developing along a what appears to be a convectively reinforced boundary from north central KS into northeast CO. Mostly discrete supercell structures persist over KS. However, there has been a tendency for storms to congeal into a small cluster across northeast CO. The atmosphere across southeast CO into western KS remains moderately unstable with 1500-2000 J/kg MLCAPE and is weakly capped. This along with a strengthening southerly nocturnal low-level jet will continue to support development along the consolidated outflows, and tendency should be for storms to grow upscale into a southward-advancing MCS. While large hail, and a couple tornadoes remain possible in the short term, greatest severe threat should transition to damaging wind. Farther north across the remainder of tornado watch 315 from southeast WY into western NE and far northeast CO, much of the boundary layer has been stabilized by convective outflow. However, latest objective analysis indicates the presence of moderate MUCAPE for parcels lifted from above the surface layer. Therefore storms over southeast WY will remain capable of producing mainly large hail as they move southeast and become elevated over top of the stable layer next couple hours. ..Dial.. 07/27/2018 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...DDC...GLD...PUB... LAT...LON 37689925 37590105 38480275 39290275 39160040 38829932 37689925
from SPC Mesoscale Discussions http://bit.ly/2LOxYHX
Be First to Comment