Over 19 people from the Houston area are still unaccounted for after the deadly floods in central Texas this past weekend.

Sally Sample Graves was a grandmother who was killed in the flooding, the BBC reported. Sarah Sample wrote that a massive wave destroyed her grandmother’s home. Sarah Sample’s father and his dog were also in the home at the time but both survived.

A July Fourth weekend deluge in Texas caused catastrophic flash flooding that has killed more than 80 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.