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All the others have their threads, so we're late to the game. Will this be a Nina winter as advertised, and if so, what intensity? If we can achieve weak Nina, it can mean good times ahead for the Valley region. Some of our most epic winters have came during that pattern, including the legendary 1984-85 winter that crushed the entire Mid-South/Tennessee Valley with heavy snows and record shattering cold. As always, many factors go into making a winter though, as we saw in 2011-2012 when the weak Nina mattered not at all and the winter was hardly a winter at all. Looking at some of the analog years, even including the bad winters, almost all areas West of the Apps are below normal in the temps department during weak Nina years. Strong Ninas flip the script however and we are often very warm during intense Nina years. I will take a further look at some of the analogs and at real data across the Valley during these years later on.
For the Tuesday update I would lift the slight into West Kentucky and get the ENH into northern Mississippi - perhaps Memphis. Warm front WF will probably get into West Tenn. Might make it to West Ky. Severe parameters including a screaming low level jet will augment the squall line from the WF south. Upper winds may be less backed than forecast if a lead wave can eject ahead of the bowling ball. A couple leading edge tornadoes would not surprise me. Unfortunately it may be after dark east of the Mississippi River. I'm expecting several to numerous damaging straight line reports, esp if some line echo wave patterns LEWPs can establish. Looks like a set-up favorable to LEWPs esp after dark. Good news farther east is relatively more stable air should keep Alabama, Mid and East Tennessee safe.