A usual culprit of RMM mischief is tropical cyclones (and higher frequency wave interactions which go hand-in-hand). The 30-240 hr 12z GFS today shows the expected development ahead within SPCZ and ER TC response (to MJO) that moves west through Indo. pic.twitter.com/lgby3LYMPV

— Anthony Masiello (@antmasiello) December 8, 2021