re: Sally - Moving towards Georgia - Potential for Significant Flooding

quote:

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Levi Cowan
@TropicalTidbits
·
3m
[#NerdTweet] Radar suggests that the new thunderstorm north of Andros Island has become a vortical hot tower, rotating in the mid-levels on the east side of the developing surface low. Features like these can speed up the organization of the surface circulation if they persist.

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These supercell like storms help to consolidate the low level spin allowing for the mid-level circulation to reach down to the surface. This has been a textbook example of how persistent deep convection drives development.