944 ACUS11 KWNS 152025 SWOMCD SPC MCD 152024 OHZ000-152130- Mesoscale Discussion 0451 NWS Storm Prediction Center Norman OK 0324 PM CDT Wed Apr 15 2026 Areas affected...Parts of northern Ohio Concerning...Severe Thunderstorm Watch 120... Valid 152024Z - 152130Z The severe weather threat for Severe Thunderstorm Watch 120 continues. SUMMARY...A locally favorable environment for supercells is evident across parts of northern OH. Damaging winds and large hail remain the main concerns, though a tornado or two is possible in this area. DISCUSSION...The CLE VWP shows enhanced clockwise low-level hodograph curvature (around 200 m2/s2 0-1 km SRH) along/immediately south of a remnant outflow boundary. Any supercells that evolve in this corridor could pose a risk of a tornado or two over the next couple hours, given the enhanced low-level streamwise vorticity and moist boundary layer. ..Weinman.. 04/15/2026 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...CLE... LAT...LON 41068233 41078321 41338356 41658343 41578245 41808104 41728072 41468062 41198092 41068233 MOST PROBABLE PEAK TORNADO INTENSITY...85-115 MPH MOST PROBABLE PEAK WIND GUST...55-70 MPH MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN  779 ACUS11 KWNS 152053 SWOMCD SPC MCD 152053 PAZ000-NYZ000-152300- Mesoscale Discussion 0452 NWS Storm Prediction Center Norman OK 0353 PM CDT Wed Apr 15 2026 Areas affected...Parts of northwest PA and southwest NY Concerning...Severe potential...Watch possible Valid 152053Z - 152300Z Probability of Watch Issuance...40 percent SUMMARY...The area is being monitored for increasing severe thunderstorm potential. An eventual watch issuance is possible. DISCUSSION...Isolated thunderstorms are evolving at the nose of a 30-kt south-southwesterly low-level jet (per VWP data) and related weak low-level warm advection plume in northwest PA into southwest NY. In the near term, a marginally unstable air mass coupled with around 40 kt of effective shear could promote a couple loosely organized cells capable of producing locally damaging gusts and marginally severe hail. While the severe threat may be too localized/marginal in the near term for a watch, upstream thunderstorm clusters should eventually move into this area with an increasing risk of damaging winds. Trends are being monitored, and an eventual watch issuance is possible. ..Weinman/Gleason.. 04/15/2026 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...BGM...BUF...CTP...PBZ...CLE... LAT...LON 41057806 41027932 41277981 42167982 42627961 42777911 42837855 42537785 42177757 41697756 41057806 MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 95 MPH MOST PROBABLE PEAK WIND GUST...55-70 MPH MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN  144 ACUS11 KWNS 152055 SWOMCD SPC MCD 152055 ARZ000-MOZ000-OKZ000-KSZ000-TXZ000-152200- Mesoscale Discussion 0453 NWS Storm Prediction Center Norman OK 0355 PM CDT Wed Apr 15 2026 Areas affected...portions of central and eastern Oklahoma into southeastern Kansas and far southwestern Missouri Concerning...Tornado Watch 121... Valid 152055Z - 152200Z The severe weather threat for Tornado Watch 121 continues. SUMMARY...A severe wind and hail threat should persist for several more hours, and a couple tornadoes remain possible. DISCUSSION...Multiple supercell thunderstorms have developed over the past couple of hours over portions of northeastern OK into southeastern KS, where severe hail has been reported. Additional storms have recently matured over northwestern TX and are approaching the Red River. All of these storms are traversing the warm sector immediately ahead of the dryline, where 2500+ J/kg MLCAPE and over 60 kts of effective bulk shear resides. As such, supercells should persist from the Red River toward the Ozarks for several more hours, accompanied by a severe wind/hail threat. Regional VADs show modest speed shear contributing to elongated hodographs, but with little low-level curvature, so tornado potential appears modest. Still, a couple of tornadoes cannot be ruled out if supercells can persist in a discrete fashion. The greatest short-term severe threat exists with ongoing storms in northeastern OK, where vertical wind shear is locally stronger. ..Squitieri.. 04/15/2026 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...SGF...TSA...ICT...FWD...OUN... LAT...LON 34049819 36669677 37769546 37949487 37849443 37329413 36219451 34249581 33999630 33899707 34049819 MOST PROBABLE PEAK TORNADO INTENSITY...85-115 MPH MOST PROBABLE PEAK WIND GUST...55-70 MPH MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN