At least 87 people are dead after heavy rain led to devastating flooding in Texas. Kerr County was hit the hardest, with at least 75 deaths, including 27 children. President Donald Trump signed a disaster declaration for the county and the Federal Emergency Management Agency is on the ground there.

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

Eight-year-old girls at sleep-away camp, families crammed into recreational vehicles, local residents traveling to or from work. These are some of the victims.

According to the National Weather Service, Vermont's experience with floods can be traced to both ongoing climate change and the state's mountainous geography.

Mr. Trump and Abbott promised to rebuild the devastated region, although the president recognized that what was lost can never be recovered.

Torrential rain flooded creeks, streams and the Guadalupe River, where the water swelled more than 26 feet in 45 minutes.

Katherine Ferruzzo had been accepted to the University of Texas at Austin for the fall semester and planned to become a Special Education teacher, her family said.

Malaya Grace Hammond is among the latest fatalities identified from the Texas floods. Hammond's family said she was swept away by floodwaters on Saturday in Travis County.

In the Midwest, quarter-sized hail and an isolated tornado cannot be ruled out, while in the South, flood alerts are in effect for areas that were devastated by flash floods last week.

Jeff Ramsey also called his mother and his brother-in-law, who were staying in a cabin nearby and were able to escape.

Libby Crawford created a Facebook group, "Camp Mystic Jellycat reunion group," to reunite surviving campers with their cherished items after the catastrophic floods.

Charlotte and Sebastian Trotter, aged 4 and 7, were found dead on July 8 after flash flooding swept through the village of Ruidoso.