Severe Tropical Cyclone Ada was a small but intense tropical cyclone that severely impacted the Whitsunday Region of Queensland, Australia, in January 1970. It has been described as a defining event in the history of the Whitsunday Islands, and was the most damaging storm in the mainland town of Proserpine's history at the time. Forming over the far eastern Coral Sea in early January, the weather disturbance that would become Ada remained weak and disorganised for nearly two weeks as it slowly moved in a clockwise loop. Accelerating toward the southwest, the system was named Ada on 15 January. All observations of the fledgling cyclone were made remotely with weather satellite imagery until it passed over an automated weather station on 16 January. The extremely compact cyclone, with a gale radius of just 55 km (35 mi), intensified into a Category 3 severe tropical cyclone just before striking the Whitsunday Islands at 14:00 UTC on 17 January. At 18:30 UTC, Ada's eye crossed the coast at Shute Harbour. The cyclone made little inland progress before stalling northwest of Mackay and dissipating on 19 January.

Daydream Island is one of seven islands of the Molle Group, a sub-group of the Whitsunday Islands in Queensland, Australia. The island is small, measuring 1 km in length and 400 m at its widest point. The highest point on the island is 51 metres above sea level.