A method, a device, and a non-transitory storage medium are described in which a beamforming-based detection service is provided. A radio device of a radio access network may receive radio information relating to a location. A current radio contour of the location may be generated based on signal and noise data. The current radio contour may be compared to a default radio contour of the location. The current radio contour may be compared to an event-based radio contours that indicate various events. A determination may be made whether an event has occurred based on a result of the comparison. A response may be provided when the event is detected.