Severe Storm Outlook Narrative (AC)
Issued by NWS
Issued by NWS
609 ACUS03 KWNS 211923 SWODY3 SPC AC 211922 Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0222 PM CDT Sat Sep 21 2024 Valid 231200Z - 241200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM THE OZARKS TO THE OHIO VALLEY AND MID-SOUTH... ...SUMMARY... Isolated strong to severe thunderstorms are possible from the Ozarks to the Ohio Valley and Mid-South region on Monday. ...Synopsis... The mid-level trough over the Southwest on Saturday will start to be absorbed within the more broad westerlies on Monday as it moves into the Missouri region. As this occurs, a belt of mid-level flow will overspread the Ozarks to Ohio Valley region where a moist airmass is in place ahead of a synoptic cold front. This cold front will move slowly east through the period Monday. ...Ozarks to Ohio Valley Region... Extensive cloud-cover from overnight convection will likely limit warm-sector heating from northern Arkansas and southern Missouri to western Kentucky and southern Indiana on Monday. However, at least some breaks in the clouds should result in pockets of greater destabilization, particularly later in the day. Inhibition will be limited across the warm sector, so any areas with greater surface heating will likely convect given the moist airmass and weak height falls during the day. The lack of strong heating or any capping inversion should keep instability somewhat weak through the day and result in a mostly marginal severe threat despite moderate deep-layer shear. A few stronger storms are possible within this zone of weak instability and moderate shear which may pose a threat for large hail or damaging wind gusts. ..Bentley.. 09/21/2024 $$