The National Weather Service released a flood advisory for Broward County, Florida, on September 18, 2026, with the warning set to remain in effect until 5:30 p.m. The advisory, issued at 1:30 p.m., also notes that southern Palm Beach County could experience similar conditions as heavy rain moves across the region.
Meteorologists attribute the heightened risk to unusually high moisture levels combined with light winds that are allowing thunderstorms to linger over the area. These slow‑moving storms are generating intense, localized rainfall that could exceed the capacity of drainage systems, prompting the advisory to alert residents and officials of potential flooding.
The advisory follows a broader pattern of weather across South Florida on Friday, where persistent moisture and minimal wind have fostered a series of showers and thunderstorms that move only gradually. The National Weather Service highlighted that the combination of saturated soils and ongoing precipitation increases the likelihood of water accumulation on roadways, low‑lying areas, and near water bodies.
Residents in the affected zones are encouraged to stay informed about the evolving conditions and to avoid travel through known flood‑prone areas when possible. Local emergency management agencies have been notified of the advisory and are prepared to respond to any incidents that may arise as the rain continues through the afternoon.
The flood advisory will be lifted at 5:30 p.m. if rainfall diminishes and water levels recede. However, officials caution that any sudden intensification of thunderstorms could extend the period of heightened flood risk, and they advise the public to remain vigilant until the advisory expires.