Authorities confirmed Wednesday that 120 people have died in the central Texas floods. Follow for live updates.

Texas Gov. Greg Abbott on Wednesday ordered state legislators to convene a special session on Monday as the death toll rose to at least 120 people and 172 reported missing in Fourth of July flooding in the Hill Country.

Heavy rains fell quickly in the predawn hours of Friday in the Texas Hill Country, causing the Guadalupe River to rise 26 feet in just 45 minutes.

After a devastating holiday weekend that left dozens dead and many still missing, Central Texas is bracing for more rain. Forecasters warn that additional storms this week could exacerbate already hazardous flood conditions,

As a succession of thunderstorms fed by the remnants of Tropical Storm Barry pummeled Texas' Hill Country, tools used by the National Oceanic and Atmospheric Administration to detect extreme rainfall began “maxing out the color charts.

"There has been a lot of misinformation flying around lately, so let me clarify: the Texas Department of Agriculture has absolutely no connection to cloud seeding or any form of weather modification," Miller said in a statement.

Social media users are spreading false claims that flash floods in Texas that killed more than 100 people over the Fourth of July holiday weekend were caused by weather modification.

There are reports some cloud seeding occurred a few days before the Texas flash flood. But it’s important to understand that cloud seeding has a relatively short-term effect in that a certain cloud is seeded and perhaps turns into one individual rain cloud or even a thunderstorm. The increased rainfall would not last for days.

Some regions in the mid-Atlantic are also facing risks of flooding. On Sunday, Tropical Storm Chantal flooded parts of North Carolina, where more than 10 inches of rain fell near the Chapel Hill area. The Haw River, near Bynum, North Carolina, crested to nearly 22 feet, the highest crest on record there, as a result of those heavy rains.

In the wake of last week’s Texas floods that killed more than 100 people, a Post analysis found the number of U.S. freshwater flood fatalities has ticked up in recent years.