Abstract An L2 regularized logistic regression model is developed in this study to predict weekly tropical cyclone (TC) genesis over the western North Pacific (WNP) Ocean and subregions of WNP including South China Sea (SCS), (WWNP), eastern (EWNP). The potential predictors for TC include a time-varying climatology, Madden–Julian oscillation (MJO), quasi-biweekly (QBWO), ENSO. relative importan...