Finally...we've been waiting all summer for this but the potential exists on Thursday for a widespread...perhaps severe weather outbreak with widespread damaging winds and perhaps some tornadoes all possible. This is a rather delicate setup, however, all the ingredients are there. as always with this type of potential there are numerous caveats and the extent of the potential probably won't be known until early Thursday morning.
1) Morning MCS - there likely will be an ongoing MCS to begin the day (riding along an instability gradient). This will certainly be one feature which complicates the forecast as we would ave to deal with cloud debris and likely subsidence behind the departing MCS. Subsidence can be good as it can help clear junk out faster, however, if it is too strong it can inhibit development later on.
2) Lack of EML/steep lapse rates. lapse rates aren't horrific, but these setups tend to have their severe weather potential (magnitude) vastly increased when there is an EML involved. With that said, combination of temperatures well into the 80's...perhaps near 90 in spots and dewpoints perhaps into the 70's with high mixing ratios should contribute to near moderate instability (again...cloud debris will be a player here too).
3) Rather strong shortwave approaching will be accompanied by anomalously strong mid-level flow with a west-to-northwest MLJ exceeding 50-60 knots with a low-level jet exceeding 30-35 knots. One caveat here is the BEST dynamics may push off the coast before we can crank again in the afternoon.
This should be extremely fun to track the next few days with plenty to work out. It is extremely important to keep expectations in check b/c this is by far a lock and lots have to come together...but all the ingredients are there.
Saturday has potential to be quite active as well.