SPC MD 520

MD 0520 CONCERNING TORNADO WATCH 141... FOR SOUTH-CENTRAL OKLAHOMA Mesoscale Discussion 0520 NWS Storm Prediction Center Norman OK 0340 PM CDT Fri Apr 24 2026 Areas affected...South-central Oklahoma Concerning...Tornado Watch 141... Valid 242040Z - 242215Z The severe weather threat for Tornado Watch 141 continues. SUMMARY...The greatest threat for very-large hail and tornadoes will be in south-central Oklahoma over the next 1-2 hours. DISCUSSION...A trio of supercells is moving southeastward into south-central Oklahoma. Their motion should generally keep them along and south of the surface boundary. The 19Z observed OUN sounding showed mid-level lapse rates of 7.4 C/km and 52 kts of effective shear. Very-large hail will be the primary concern with these cells as the progress. 2+ inch hail has already been reported in Seminole County earlier. A tornado threat will also exist given the back surface winds and upper 60s F dewpoints. ..Wendt.. 04/24/2026 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...TSA...OUN... LAT...LON 34609730 34779745 35109655 34679552 34449538 34089576 34069644 34279709 34609730 MOST PROBABLE PEAK TORNADO INTENSITY...100-125 MPH MOST PROBABLE PEAK WIND GUST...55-70 MPH MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN Read more