While the search continues for survivors of the Texas flood, a clearer picture has emerged of how it turned catastrophic, and how quickly it escalated in the early hours of July 4.

A July Fourth weekend deluge in Texas caused catastrophic flash flooding that has killed at least 89 people. Camp Mystic in Kerr County says Monday morning that it is “grieving the loss” of 27 campers and counselors as the search continues for victims of the disaster.