HISD families held a candlelight vigil to pray for the safe return of Sinclair Elementary student Greta Toranzo, who went missing after floods at Camp Mystic.

Heavy rains unleashed a “catastrophic” and deadly flood Friday on the Guadalupe River in Central Texas, prompting evacuations and a frantic search for missing people. At least 32 people were killed in the flood, officials said Saturday afternoon, as both state and county authorities emphasized many unknowns remain.

Summer camp in the flood-prone Hill Country has long been a rite of passage for young people from Texas and beyond.