"Beaches on both the Pacific and Sea of Cortes sides of the Baja California peninsula, near Cabo San Lucas and San Jose del Cabo, can be dangerous due to strong currents, riptides and rogue waves," part of the warning read.
Thomas did not know rogue waves were a concern in the area and now hopes the deaths can serve as a warning to save the lives of other tourists.
"There are certain beaches there that are killer beaches," Thomas told WFAA. "If you're out on the beach or in the ocean, you need to be very, very cautious of what's going on around you."
The Associated Press contributed to this report.