As the Guadalupe River swelled from a wall of water heading downstream, sirens blared over the tiny river community of Comfort — a last-ditch warning to get out for those who had missed cellphone alerts and firefighters going street-to-street telling people to get out.

Destructive flooding triggered by unrelenting rain that rapidly overwhelmed the Guadalupe River has killed at least 100 people across central Texas.

Thursday's rain was a highly localized event. The highest impact was only felt over a 5-to-10 mile area south of Boston.

A "considerable" flash flood warning has been issued in Boston as heavy, life-threatening rain pounds the city and areas to the south. Two to 4 inches of rain has fallen so far. Rainfall rates are reaching up to 2 inches per hour.

At 6:56 p.m. on Thursday, the NWS Newport/Morehead City NC released an updated flash flood warning in effect until 9 p.m. for Dare County.

The two children were identified as Charlotte Trotter, 4, and Sebastian Trotter, 7, according to their aunt Tiffanie Wyatt. She said their father, Sebastian Trotter, a solder based at Fort Bliss in El Paso, Texas, and their mother, Stephanie, both suffered serious injuries but survived and were receiving medical treatment at a hospital in Texas.

At least three people, including two children, have died due to flash flooding in Ruidoso, New Mexico on Tuesday, July 8.

Mayor Lynn Crawford said hearts are broken over the lives lost and stomachs are in knots as residents begin to take stock of the damage.