Typhoon Saola’s (2023) anti-clockwise loop track was monitored by six spaceborne synthetic aperture radar (SAR) images, offering a unique opportunity to investigate the physical factor known as steering flow, a widely accepted concept for studying tropical cyclone (TC) movement and storm surges. Despite its importance, direct observations of steering flows are limited. To address the complex movements observed during the loop track, we propose a novel method to decompose the SAR-derived high-resolution surface wind field into: 1) symmetric rotational winds, 2) general steering flow across three consecutive SAR cases within ~24 hours, and 3) the remaining steering flow. Our analysis reveals that the newly determined remaining steering flows from north effectively explain the loop track associated with two general steering flows, identified as the western North Pacific summer monsoon (WNPSM) from southeast and Indian summer monsoon (ISM) from southwest.