The low pressure system currently over the Yucatan Channel will move northeast across the Gulf of Mexico and move into Florida. As it goes into Florida, over 4 inches of rain is possible. That's just where the fun begins. The low will hug the East Coast and move up along the area. As it does so, the system will 'bomb out', meaning pressures in the system will drop in large amounts rapidly, meaning rapid and significant strengthening. This is the type of storm that produces huge snows in the winter across the Northeast region. However, since it is fall, the precipitation type will be rain. Adding to the significant rains, it will be very windy, with sustained winds at or above 20 MPH in the most affected areas.