12z
12z:
After spending the better part of yesterday chasing high-speed soup late into the evening in AR, I had trouble getting going this morning. But I’ve decided to head up to Bowling Green, KY from my starting point of Jackson, TN. This will take me just long enough to get there, get an update, and realize I made a mistake.
I like the energy and diffluence aloft up north, and there is a nice plume of moisture feeding up through IN northward. The dry air and clearing west of the trough is appealing as well. I’m not a big fan of the veering upper level winds near the low center, but the surface winds back a little over MI and down into OH. Storms in this area will likely race northward at high speeds. Looking at the soundings for the entire Midwest (well, only the ones I cared to take the time to look up), things look largely uncapped with somewhat low lapse rates. CAPE development would seem to require only a little surface heating, but with a non-existent cap, things could get going early and very widespread. There is plenty of lift in place, so a line of severe storms with very strong straight-line winds would be quite possible across much of the area.
Low cloudiness and modest capping is a concern south of the MDT outlook area, but Jackson, MS has a decent-looking sounding, considering the current sfc temps and proximity to deep moisture. Winds further south have less upper air energy to work with but less of a veering upper wind profile.
I guess my reasoning would be to hope for a tail end type cell in the richer moisture. I’d also like to position so that I can adjust either north or south. I would prefer a more northern target, considering Dixie Alley chase terrain, but I’m open to whatever develops. I’m already way out of position for anything up toward MI/Great Lakes area.
Edit: With the nice clearing to the south, I wouldn't rule out an area near the MO/IA border for late afternoon low-topped action. These neg-tilt systems with screaming upper levels make for an interesting case. Again, this area is way out of play for me.
Edit2: Ha, ha. I thought the original 0z outlook was the Day 1 for the previous day. This explains my first paragraph above. Either way, the outlook played very little part in my positioning decision.