As Hurricane Dorian churns northward off the coast of South Carolina as a Category 2 storm, the National Hurricane Center continues to forecast dangerous storm surge conditions through the Carolinas, up the coast into Virginia, as of 11 a.m. September 5.

Using National Flood Insurance Program policy takeup rates as estimated by Aon, the six coastal counties in South Carolina average a 28 percent flood insurance takeup rate, compared to a 16 percent takeup rate for the 21 coastal counties in North Carolina. Dare County in North Carolina had the highest takeup rate of both states, with 61 percent, and Hertford County had the lowest in the two states, at 1.0 percent. Overall South Carolina has 204,372 total policies in force, with 2,284,722 housing units statewide. North Carolina has 132,983 policies in force for 4,622,575 housing units statewide.

The graphic below shows the probability of storm-induced flooding for the Carolina coast as of September 5 at 2 p.m. eastern.
For up-to-date flood probability click here.

More flood insurance facts and statistics from the I.I.I. are available here.