weathernet
(Storm Tracker)
Tue Jul 15 2008 03:40 AM
Re: Bertha Stalls SSE of Bermuda, Watching Two Other Things

John - I concur with your analysis of 94L, with regard to overall conditions at hand. I too was incorrect in assuming a T.D. at this time -24 hours ago. That said, and upon a closer look at several different Sat. enhancements, it almost seems to me that some Altocumulus ( or some mid level certainly lower than 250mb level ) on the systems western periphery seems to be moving out and away, rather than inward more indicative of a better stacked cyclone. My take is that perhaps there was or now is, a less than vertical system in place. Again however, as you pointed out....conditions would seem favorable and given a new round of bursting convection, perhaps a new focused point of surface convergence and dropping pressures would quickly establish a fairly robust and "visible" cyclone, at least to the models.

One footnote- There would appear to be a slight rise to the SST's just ahead of 94 L, at approx. 52W. I honestly do expect to see some convective comeback overnight, but certainly as the system moves over this somewhat warmer water. As to the convective area over the ITC, just south and southeast of 94L, this too may have near term impacted inflow slightly. If we start seeing this convection suddenly acting as a "tap root" into 94L, rather than seperate from it, than we could be looking at one big wet one knocking at the Lesser Antilles door. Finally, though I do not see any outflow cloud fragments on the cyclone's northern quadrant being impacted by any obvious shear, the system is now passing directly south of the southernmost point of a mid to upper mid-Atlantic trough. I cannot help but wonder if this feature has had some short term retarding of development.

I am still "bullish" on this system for future development.



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