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

FEMA records show Kerr County officials did not use FEMA’s system to send warnings to phones in the critical hours as the flooding began on July 4.

Max Chesnes is the Tampa Bay Times' environment and climate reporter, covering public lands, water quality, wildlife and everything in between. Reach him at [email protected] or follow him on Instagram @MaxChesnes. Anyone can view a sampling of recent comments, but you must be a Times subscriber to contribute. Log in above or subscribe here.

Heavy rains spurred deadly flooding along the Guadalupe River in central Texas on the Fourth of July, leaving at least 120 people dead, including 27 children and counselors at Camp Mystic, a girls' Christian camp that sits along the river. More than 160 people remain missing as of July 11.

Officials in Kerr County, where the majority of the deaths from the July 4 flash floods occurred, have yet to detail what actions they took in the early hours of the disaster.

In Kerr County, the hardest-hit region, officials said the number of missing remained unchanged, at 161, since Tuesday. The floods have killed at least 121 people statewide.

Here’s what to know about the deadly flooding, the colossal weather system that drove it in and around Kerr County, Texas, and ongoing efforts to identify victims.