It is hypothesized that the large-scale flow amplification was highly sensitive to the timing and strength of the TCextratropical flow interaction. To evaluate this hypothesis, the main modes of extratropical flow variability associated with the recurvature of TC Malakas (i.e., the main forecast scenarios of recurvature) are identified by applying an empirical orthogonal functionfuzzy clustering analysis (Harr et al. 2008; Anwender et al. 2008) to THORPEX Interactive Grand Global Ensemble (TIGGE) forecasts of potential temperature on the dynamic tropopause over the North Pacific. Then, the TCextratropical flow interaction is objectively evaluated following Archambault et al. (2013) for each forecast scenario of recurvature. Finally, for each forecast scenario of recurvature, the large-scale flow response to Malakas is evaluated in terms of the timing and strength of the corresponding TCextratropical flow interaction.