Tropical cylone Seroja was one of the first tropical cyclones to significantly impact Indonesian land and the strongest one in such close proximity to Timor Island. In April 2021 Seroja brought historic flooding to Indonesia and East Timor, as well as impacting Western Australia. Its genesis was associated with enhanced equatorial convection which was preceded by warm sea surface anomalies. This happened on the leading edge of a Madden-Julian Oscillation event. Within the Madden-Julian Oscillation, the interaction between convectively coupled equatorial Rossby wave and two convectively coupled Kelvin waves created "perfect storm" conditions and led to cyclogensis. The development and consequences of TC Seroja were unusual for this part of the world. The question arises: to what extent could such strong storms in Indonesia become more common due to the climate change? It is argued that looking at tropical waves in the warmer climates may provide some insight into this complex problem.