8:07pm CDT #SPC Day1 Outlook Marginal Risk: across the lower Great Lakes, central Appalachians, Tennessee Valley, lower Mississippi Valley and western Gulf Coast states https://t.co/TgJgC6cQZw pic.twitter.com/BOBKv8Yd5y — NWS Storm Prediction Center (@NWSSPC) April 6, 2023 国家气象局(NWS)...