Severe Storm Outlook Narrative (AC)
Issued by NWS
Issued by NWS
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666 ACUS01 KWNS 130101 SWODY1 SPC AC 130100 Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0800 PM CDT Wed Jun 12 2024 Valid 130100Z - 131200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM EASTERN NE INTO PARTS OF MN/WI... ...SUMMARY... Scattered severe thunderstorms capable of large hail, damaging wind gusts, and a couple tornadoes remain possible across parts of the Upper Midwest and central Plains this evening. ...Parts of MN/WI into IA/eastern NE... A few supercells are ongoing this evening across parts of MN, within an environment characterized by moderate to strong buoyancy and strong deep-layer shear. These storms may persist for a few hours this evening and spread into parts of WI, with a continued threat of large hail, localized severe gusts, and a couple tornadoes. An eventual weakening trend is expected later tonight as MLCINH continues to increase regionwide. Farther south, an intense supercell cluster is ongoing near the NE/IA border, north of Omaha, within a strongly unstable and favorable sheared environment. This cluster may continue south-southeastward along the instability gradient, before storms weaken later tonight due to increasing MLCINH. The potential for very large hail and isolated severe gusts will continue as long as this cluster persists. Overnight, some guidance (including recent HRRR runs) suggest potential for elevated storm development from SD into southwest MN. Moderate elevated buoyancy and sufficient effective shear could support a strong storm or two with an isolated hail threat. ..Dean.. 06/13/2024 $$