Locally higher amounts for storm surge are possible along the rivers and sounds near New Bern, NC.
The National Hurricane Center said the storm would dump as much as 30 to 40 inches (76-102 cm) of rain on the southeastern coast of North Carolina and part of northeastern SC, as well as up to 10 inches (25 cm) in southwestern Virginia. Maximum sustained winds Friday morning were near 35 miles per hour with higher gusts.
As of Tuesday, about 1.7 million people in North and SC and in Virginia have been urged to evacuate the coast, and hurricane watches and warnings extended across an area with about 5.4 million residents.
This alert is provided by Tropical Storm Risk (TSR). The hurricane center is giving the system a 50 percent chance of becoming a tropical depression or storm within the next five days.
A westward motion is forecast to continue through the end of the week, with Isaac expected to move across the Lesser Antilles and into the eastern Caribbean Sea Wednesday night or Thursday.
Some coastal flooding is possible in areas of onshore winds. This system is expected to bring added rainfall to parts of Texas.
In some areas of southeastern North Carolina officials had measured rainfall totals exceeding 16 inches (41 centimeters), warning that some areas could see totals up to 40 inches.
Elsewhere in the Appalachians and Mid-Atlantic states...3 to 6 inches, isolated 12 inches. There is also the potential for flooding further inland due to heavy rain. Apparently, the hurricane is just a few hundred miles away from the North Carolina's coastline.
Cameras outside the International Space Station captured dramatic views of rapidly strengthening Hurricane Florence at 8:10 a.m. EDT Sept. 10 as it moved in a westerly direction across the Atlantic, headed for a likely landfall along the eastern seaboard of the us late Thursday or early Friday.
Next intermediate advisory at 800 PM EDT.