Over 120 people have died after heavy rain pounded Kerr County, Texas, early Friday, leading to "catastrophic" flooding, the sheriff said.

Residents living south of the San Saba River in San Saba County have been ordered to evacuate due to river surging.

Scholars and designers of early warning systems say that there are still huge gaps in our ability to predict flash floods and warn those at risk.

Searches were suspended and a new flash flood warning was issued in Kerrville and Kerr County, Texas, on July 13 in the wake of the flooding that struck the area last week on July 4. The warning was downgraded to a flood watch hours later.

Here's what to know about the deadly flooding, the colossal weather system that drove it and ongoing efforts to identify victims.

A flash flood warning is in effect until 9 a.m. for Boston and several communities south of the city, including Brockton, Quincy, and Randolph, officials said Thursday morning. The National Weather Service also issued a flood watch that will remain in effect until 4 p.m. for Rhode Island and eastern portions of Massachusetts and Connecticut.

Officials in Texas are facing mounting questions about whether they did enough to get people out of harm’s way before a flash flood swept down the Guadalupe River and killed more than 100 people, including at least 27 children and counselors at an all-girls Christian camp.

A week after the devastating Texas flooding, serious questions remain about what actions local leaders took after ominous warnings from the National Weather Service, echoing other recent high-profile natural disasters marked by accusations of government complacency.