ACUS11 KWNS 260044 SWOMCD SPC MCD 260043 ARZ000-MOZ000-OKZ000-KSZ000-260245- Mesoscale Discussion 0535 NWS Storm Prediction Center Norman OK 0743 PM CDT Sat Apr 25 2026 Areas affected...Southeast Kansas into northeast Oklahoma Concerning...Severe Thunderstorm Watch 145... Valid 260043Z - 260245Z The severe weather threat for Severe Thunderstorm Watch 145 continues. SUMMARY...A corridor of higher hail, and perhaps severe wind, potential will persist across far southeast Kansas and northwest Oklahoma for the next few hours. DISCUSSION...Regional radar imagery over the past 1-2 hours has depicted several transient, and likely elevated, supercells from far southeast KS into northeast OK and far northwest AR with a history of producing golf ball sized hail and occasional severe winds. Storm motions to the southeast within the zone of initiation is promoting destructive storm interactions, and precluding a more prolonged hail threat from any one storm. However, GOES IR imagery continues to show periodic intense updrafts, and new convection continues to develop within this zone of focused warm advection (likely focused near the 850 mb level). New development is particularly noted on the southwest flank of a gradually expanding cold pool where ascent appears to be maximized and MUCAPE remains near 2000 J/kg. The regional KINX VWP also continues to sample very strong speed shear through a deep layer. Consequently, new convection developing across northeast OK over the next few hours will likely continue to see transient organization - possibly into supercells - with an attendant threat for large hail. Storm interactions/destructive interference may continue to limit longevity and intensity of any particular cell, but latest high-res guidance suggests a threat for severe hail, and perhaps sporadic severe gusts, will likely persist through 04-05 UTC. ..Moore.. 04/26/2026 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...SGF...TSA...ICT... LAT...LON 37419597 37169524 36919474 36459417 36129398 35889398 35629427 35589460 35569506 35719547 35859588 36149635 36639668 37099665 37299654 37409641 37419597 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