Webin the wilmington area and brunswick county “large breaking waves of 8 to 11 feet are expected,” forecasters warned. During the coastal flood watch in wilmington, river. Mostly cloudy, with a high near 76. Northeast wind 6 to 9 mph, with gusts as high as 15 mph. A slight chance of showers. Webmonday’s deluge centered on carolina beach south of wilmington, where more than 18 inches (46 centimeters) of rain fell in 12 hours and almost 21 overall. Through sunday night, expect rain to fall heavily at times, tally to one to three and locally more than five inches, and produce isolated drainage. Webcoastal marine zone forecasts by the wilmington, nc forecast office. Click on the links in the table to get a forecast for each zone. Clicking on the map links to a text forecast. Webcoastal flood advisory until august 24, 04:00 am edt. Wilmington international airport (kilm) lat: Webareas around wilmington, new hanover county, and through brunswick county south to myrtle beach will be under a high surf advisory with wind gusts up to 44. Webthe warning area includes edisto beach, south carolina, northward to ocracoke inlet, north carolina. As of 11 p. m. Sunday, the national hurricane center said the storm was. Webhurricane idalia is forecast to hit the north carolina coast late wednesday and early thursday with 60 mph winds and up to 8 inches of rain at the outer banks and.