Posted by Brent Cameron
The former Dorian has been reduced to a tropical wave that's approaching the Bahamas. If the wave holds together, bands of rain with thunderstorms will likely overspread the Bahama islands and south Florida... in a couple of days. By the way, on both Sunday and Monday, the "hurricane hunter plane" flew to investigate the system. It was determined that it lacked organization needed to be upgraded to a tropical cyclone, again.
There are several factors that will continue to cause havoc for the remnants of Dorian: dry air (south), and upper low (west), unfavorable winds, and its fast movement. All are expected to keep the disturbance at its current strength... or even weaker!
If the tropical moisture doesn't break apart, there's a reasonable chance that south Florida will have a period of wet and unsettled weather... from late Wednesday through Thursday. If the disturbance slows down, of course, the wetter weather could linger into Friday, as well. What's the main concern with this possible drencher? The threat of street flooding will be an important issue... due to so much rain over the past several weeks!
Elsewhere in the tropics, there's another wave over the eastern Atlantic Ocean but without a hint of organizing into more. As we go into August and September, we'll need to pay close attention to any potential spin across the Atlantic, Caribbean and Gulf.
Here's a "snapshot from space" showing us a good view of the tropics from above. The circular shaped cloud band (north of Puerto Rico) is the former Dorian remnants. The clear-looking area that's currently over the Bahamas is where there's an upper level low. High altitude winds are assisting in shearing the system and keeping it weak.