Tropical Storm Bertha Forms in Gulf as Flash Floods Kill at Least 10 Across US

A Utah fire captain's family and swimmers in Ohio were among the victims as more heavy rain threatens the Northeast

Tropical Storm Bertha formed in the Gulf of Mexico on Monday, the second named storm of the Atlantic hurricane season, threatening the Gulf Coast with heavy rain even as the nation was still reckoning with deadly flash flooding over the weekend.

In Ohio, five people drowned in the Scioto River after several of them entered the water to help another person who was struggling to swim, authorities said Monday. A motorist called 911 after spotting a frightened child who had been with the group running along a nearby road.

In Utah, a Provo fire department captain, his wife and their three sons were found dead following a flash flood, fire officials said.

Meanwhile, the Northeast and Mid-Atlantic braced Tuesday for another round of severe storms and possible flash flooding after the region was hammered by heavy rain over the weekend, ABC News reported.

Forecasters were tracking Bertha's path along the Gulf Coast as emergency officials in multiple states urged residents to avoid flooded roadways and fast-moving water. The back-to-back disasters underscored a summer marked by intense, fast-developing storms across large stretches of the country.

— Compiled from reporting by CBS News and ABC News.