FORT LAUDERDALE, Fla. (AP) – Heavy rain from Tropical Storm Eta is causing dangerous flooding across Florida’s most densely populated urban areas. The system stranded cars and swamped entire neighborhoods with fast-rising water that had no place to drain. The system made landfall Monday in the Florida Keys and posed a serious threat across South Florida, which was already drenched from more than 14 inches (35 centimeters) of rain last month. Forecasters say Eta could dump an additional 6 to 12 inches (15 to 30 centimeters). Earlier, the storm struck Nicaragua as a Category 4 hurricane and killed nearly 70 people from Mexico to Panama.