Mesoscale Discussion 1658 NWS Storm Prediction Center Norman OK 0613 PM CDT Mon Aug 31 2020 Areas affected...Northwest Texas to Southeast Kansas Concerning...Severe Thunderstorm Watch 480... Valid 312313Z - 010045Z The severe weather threat for Severe Thunderstorm Watch 480 continues. SUMMARY...Isolated large hail and damaging wind threat continue from northwest Texas into southeast Kansas. DISCUSSION...Latest water-vapor and radar imagery suggest a weak mid-level short-wave trough is progressing across the southern High Plains. Considerable mid-high cloudiness extend immediately ahead of this feature with substantial deep convection now developing along a corridor from west of ABI-OKC-BVO. Additionally, a synoptic front is settling into this region providing the focus for continued upscale growth. Observed wind profiles ahead of the short wave appear favorable for sustained, organized updrafts and a few supercells have been observed, especially early in convective evolution. However, numerous updrafts continue to develop along/ahead of the front, and should continue to do so as LLJ strengthens some after sunset. An expanding corridor of storms should ultimately evolve into one or more MCSs over the next 2-4 hours. Hail remains likely in the formative stages of these updrafts; otherwise, damaging winds remain possible. ..Darrow.. 08/31/2020 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...SGF...TSA...ICT...OUN...LUB... LAT...LON 33740003 37439609 37429428 33729827 33740003Read more
from SPC Forecast Products http://www.spc.noaa.gov/products/md/md1658.html
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