Reposted from Ron Basso (lost post):

Looking at the GOM water vapor

http://www.ssd.noaa.gov/PS/TROP/DATA/RT/gmex-wv-loop.html

Can Clark or any other MET comment on the ULLs over eastern Texas and the other in the SW Gulf and they're potential impact on the track of Dennis. I'm no expert, but it seems these two features may act to force Dennis more on a more northward path once it exits the north coast of Cuba and gains some latitude in the eastern GOM. Also, I notice the high (currently centered east of Daytona Beach) seems to be drifting a little to the NE. Don't know what it all means, but it seems a more parallel path to the florida west coast rather than a NW path into NO. Also, seems to indicate that some SW shear may impact the system as it gets into the northern GOM.