SPC MD 1031

MD 1031 CONCERNING SEVERE POTENTIAL...WATCH POSSIBLE FOR PARTS OF SOUTHEASTERN WYOMING AND ADJACENT NORTHEASTERN COLORADO/SOUTHWESTERN NEBRASKA Mesoscale Discussion 1031 NWS Storm Prediction Center Norman OK 0251 PM CDT Mon Jun 08 2026 Areas affected...parts of southeastern Wyoming and adjacent northeastern Colorado/southwestern Nebraska Concerning...Severe potential...Watch possible Valid 081951Z - 082145Z Probability of Watch Issuance...60 percent SUMMARY...Renewed isolated supercell development possible through late afternoon. Trends are being monitored for the possibility of a severe weather watch. DISCUSSION...Isolated vigorous thunderstorm development is already underway near/north of the Cheyenne Ridge, likely supported by inflow emanating from a narrow corridor of low-level moistening along the Front Range into southeastern Wyoming. Although warming mid-levels and slower low-level moisture to the east of the higher terrain may initially inhibit eastward propagation of stronger convection, upslope flow into the higher terrain near/east of Cheyenne may provide a focus for renewed strong to severe thunderstorm development through late afternoon. Beneath modest, but strongly sheared, southwesterly deep-layer mean flow, this may include an evolving supercell or two accompanied by the risk for large hail. ..Kerr/Smith.. 06/08/2026 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...BOU...CYS... LAT...LON 42410493 41880380 40920382 41010469 41980529 42410493 MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH MOST PROBABLE PEAK WIND GUST...55-70 MPH MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN Read more