A monitoring system, method and computer program product are provided for monitoring the health of a monitored system. The monitoring system may include a receiver module to receive a plurality of sensor data relating to the monitored system and to receive textual data, such as free text, relating to the monitored system. The monitoring system may also include an associative memory to store and process the sensor data and the textual data and to establish associations between at least some of the sensor data and the textual data. Further, the monitoring system may include a dynamic change identification module to identify an instance in which the sensor data represents a dynamic change in condition and a correlation module to identify an instance in which textual data is associated with the sensor data proximate the dynamic change in condition so as to correlate the sensor data and the textual data.