Over 100 people have died after heavy rain pounded Kerr County, Texas, early Friday, leading to "catastrophic" flooding, the sheriff said.

Businesses large and small also sprang into action to help the community. Grocery chain H-E-B, which started in Kerrville, one of the cities affected by the floods, has been donating food and supplies through the Red Cross. San Antonio-based fast-food chain Whataburger said it would provide meals to first responders.

The flash floods in Central Texas that have killed more than 100 people and left dozens missing happened quickly, raising the Guadalupe River 26 feet in just 45 minutes. CBS News environmental correspondent David Schechter joins to explain how climate change impacts severe weather events.

More than 100 people have died and dozens of others are missing following devastating central Texas floods that tore through local communities along the Guadalupe River early Friday. Fast-moving waters rose some 26 feet in under an hour overnight,