Emergency services respond to reports of a teenager missing after entering the water at Rother Valley Park in Rotherham, South Yorkshire. According to the accounts provided, the incident occurs shortly before 7pm on Monday, during very hot conditions when temperatures reportedly exceed 30C. Rescue teams conduct searches at the park, scouring the area in an effort to locate the missing boy. The available reports describe the situation as a potential drowning or water-related incident, with the teenager said to have entered the water and not come out. Authorities work at the scene as part of the broader emergency response, including search activity in and around the water. Details about the teenager’s age beyond being described as a teenager, as well as the circumstances leading up to the incident and any outcome at the time of reporting, are not included in the provided sources.