SPC MD 514

MD 0514 CONCERNING SEVERE THUNDERSTORM WATCH 140... FOR NORTH-CENTRAL OKLAHOMA INTO SOUTHWEST MISSOURI AND NORTHWEST ARKANSAS Mesoscale Discussion 0514 NWS Storm Prediction Center Norman OK 1150 PM CDT Thu Apr 23 2026 Areas affected...north-central Oklahoma into southwest Missouri and northwest Arkansas Concerning...Severe Thunderstorm Watch 140... Valid 240450Z - 240645Z The severe weather threat for Severe Thunderstorm Watch 140 continues. SUMMARY...A corridor of damaging wind, hail, and brief tornado potential persists from north-central into northeast Oklahoma, and eventually into southwest Missouri and northwest Arkansas. DISCUSSION...Earlier supercells have largely merged into a linear/bowing structure this evening, with aggregating outflows and a cold front pushing in from the north. While the surface air mass has become cooler, substantial instability remains for elevated parcels feeding into this system. Strong low-level shear exists with 50-60 kt at or above 925 mb, which will continue to feed this complex. Deep-layer shear is generally parallel to the orientation of this line, however, periodic bowing structures may persist across the area, with mesocyclones still possible. Damaging gusts, areas of hail, and even a brief tornado cannot be ruled out next several hours given such strong shear and ample moisture/instability. ..Jewell.. 04/24/2026 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...SGF...TSA...ICT...OUN... LAT...LON 36389761 36719594 37409482 37899427 37869371 37309335 36709340 36179383 36019505 35969604 35959715 36019756 36259770 36389761 MOST PROBABLE PEAK TORNADO INTENSITY...85-110 MPH MOST PROBABLE PEAK WIND GUST...55-70 MPH MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN Read more