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Mesoscale Discussion 1731 | |
Mesoscale Discussion 1731 NWS Storm Prediction Center Norman OK 0444 PM CDT Sun Sep 12 2021 Areas affected...Portions of eastern Colorado...far western Kansas...and far southwest Nebraska Concerning...Severe potential...Watch unlikely Valid 122144Z - 122315Z Probability of Watch Issuance...20 percent SUMMARY...There will be an isolated threat of severe wind gusts into the evening across portions of the central High Plains. DISCUSSION...Storms have developed along the Colorado Front Range in an area of weak upslope flow. Moisture is somewhat limited with surface dewpoints in the 40s, but temperatures have warmed into the upper 80s to low 90s which has generated sufficient instability for occasional strong updrafts with some organization given around 35 knots of effective shear per KFTG VWP. Given the hot boundary layer and steep lapse rates, severe wind gusts will be possible with any of this activity. The best chance for these stronger gusts will likely be farther away from the terrain where dewpoints are in the low 50s which yields slightly higher instability around 500 J/kg. Any threat is expected to remain isolated, therefore, no severe thunderstorm watch is anticipated. ..Bentley/Grams.. 09/12/2021 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LBF...DDC...GLD...PUB...BOU... LAT...LON 39660409 40190352 40570230 40190174 38770163 37540190 37450295 37860367 39660409 |
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