Not quite so sure we'll get something out of 93L. If it happens, I think it'll be the perturbation currently in the NW Caribbean as opposed to the main feature heading toward Florida. The upper-level environment just isn't terribly conducive to tropical development; anything that does form, I think, is more likely to be of a dubious tropical nature at best. Wouldn't be surprised to see something subtropical or extratropical form out of that, really.
Tammy is also of dubious tropical nature. Recon has found an ever-eroding temperature gradient inside versus outside of the storm -- currently even -- and earlier reported a flat temperature gradient that has continued to get flatter. The strongest winds are being found well away from the center in the NE quadrant, generally 50-100mi away from the center. The cyclone phase analyses from all available models imply a hybrid structure with only a shallow warm core. Given the satellite appearance and the available data, I don't think Tammy is a tropical cyclone and is instead a subtropical storm. However, that has little bearing on what we'll get out of the system, just that the landfall area will see little in the way of significant weather while areas well-removed from the storm center are going to see the brunt of the storm. I do think Tammy will start to pivot to the NW and WNW and slow down with time; the ridge to the north still remains, the trough projected to swing through is still well to the west, and the storm is at the extent of the upper-low now. Think this one ends up somewhere between Albany, GA and the Savannah River tomorrow.
94L...not too keen on its impacts. That deep upper level trough will kill it if it gains too much latitude and unless the pattern significantly changes in the tropics/subtropics, it's a goner by 50W no matter what happens. I don't really see the pattern changing, so unless it gets its act together shortly it's likely just another depression for the record books at best. The low way up there at 40N/20-25W...those happen on occasion, not a likely candidate for anything interesting. Should slide south and sit there for the next few days, though. The upper low over the subtropical central Atlantic similarly is not likely to result in a whole lot, though the GFS develops something along the convergence zone to its south and drives it toward the north and northwest. Not buying that yet, just like the CV storm it's been advertising.
Anything we get close-in in the short term is likely to be another Michael (from last year) at best -- a hybrid system that moves at a fairly decent clip but brings a couple-few inches of rain to some area. That's the end result from Tammy and the likely end result from 93L...I just think the environment is more conducive to hybrid/extratropical development, particularly as that upper trough approaches from the central US, than anything tropical. Time will tell.
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