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| Mesoscale Discussion 1205 | |
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Mesoscale Discussion 1205 NWS Storm Prediction Center Norman OK 0539 PM CDT Sat Jun 08 2024 Areas affected...Portions of northeastern Colorado Concerning...Severe Thunderstorm Watch 398... Valid 082239Z - 090045Z The severe weather threat for Severe Thunderstorm Watch 398 continues. SUMMARY...A localized corridor of significant severe-gust potential (75-85 mph) is evident for the next few hours across portions of northeast Colorado. Sporadic large hail and brief tornadoes are also possible. DISCUSSION...An upscale-growing cluster of storms is tracking southeastward at around 25-30 kt across portions of northeastern CO -- generally between I-70 and I-76. Gusts upwards of 70 mph have been observed with these storms. During the next few hours, continued upscale growth/cold pool consolidation is expected, aided by a glancing shortwave trough (evident in water-vapor imagery) over far northeastern CO. Earlier heating of a relatively moist boundary layer (middle/upper 50s dewpoints) beneath steep midlevel lapse rates should support continued surface-based inflow for intensifying updrafts at the leading edge of the convective line. And, around 50 kt of westerly/line-orthogonal 0-6 km shear (sampled by regional VWP) should aid in organized embedded updrafts with instances of deep/persistent rotation. As a result, the organizing cold pool and embedded supercell/mesovortex structures will be capable of producing significant gusts of 75-85 mph as it continues southeastward for the next few hours. Sporadic large hail and brief tornadoes will also be possible, especially with the embedded supercells/mesovorticies. ..Weinman.. 06/08/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...GLD...BOU... LAT...LON 39860388 40200352 40360327 40470295 40300245 40060212 39580213 39280239 39120294 39070364 39310417 39500426 39860388 |
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