ACUS03 KWNS 160707 SWODY3 SPC AC 160705 Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0205 AM CDT Thu Apr 16 2026 Valid 181200Z - 191200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE OHIO VALLEY... ...SUMMARY... Isolated strong to severe thunderstorms capable of damaging winds and hail will be possible on Saturday across part of the Ohio Valley. ...Ohio Valley... A large-scale upper trough oriented over the Upper Midwest and Plains will shift east over the Great Lakes, Midwest and TN Valley on Saturday/Saturday night. Strong deep-layer southwesterly flow will overspread the Ohio Valley ahead of an eastward-advancing cold front. This front should be located from Lower MI into southeast MO Saturday morning, moving across the Ohio Valley through early evening. Modest boundary-layer moisture will be in place ahead of the front. Daytime heating into the 70s and modestly steep midlevel lapse rates will support weak destabilization (generally less than 1000 J/kg MLCAPE). While instability will be modest, strong low and midlevel flow will support organized cells and/or line segments capable of strong gusts. Any discrete cellular activity also may produce marginally severe hail. These severe risk should gradually wane during the evening with eastward extent. ...TX to the Lower MS Valley... Thunderstorms are expected along a southeast-advancing cold front Saturday afternoon and evening. Deep-layer flow will be oriented parallel to the front, and convection may largely be anafrontal or quickly undercut by the front. While weak MUCAPE is noted in forecast soundings, severe potential is not expected at this time. ..Leitman.. 04/16/2026 $$