Looking at the #NOAA / #NHC site. #TropStorm #Marco forms, should pass over part of the #Yucatan, then head across the Gulf toward #TX or #LA. To the east of that, TropStorm #Laura is bigger, but sloppy. Expected to pass near or over #PR, Hispaniola ( #DR and #Haiti), #Cuba, #Caymans, #Bahamas, then enter the Gulf of Mexico before becoming a hurricane

https://www.nhc.noaa.gov/

As always, these forecasts are based on mathematical models, and real-world situations almost always differ from models. If you're in the US Southeast or the Gulf Coast, you should take precautions as though one or both storms could change course and visit you.