A geomagnetic storm is primarily characterized by a decrease in the Dst or SYM-H index. This drop, known as the *main phase* of the storm, reflects the buildup of the ring current within the magnetosphere, serving as a direct indicator of energy injection from the solar wind into the magnetospheric system. The Dst (or SYM-H) index represents the average of the H-component perturbations measured at strategically selected low- and mid-latitude magnetometer stations. Interestingly, during the main phase of certain storm events, we observed unexpected positive perturbations—or phase reversals—in the H-component at some stations, contrary to conventional expectations. These phase reversals appear to follow specific patterns. In our study, we attempted to identify these patterns and establish a cause-effect relationship. We propose that a combination of magnetospheric and ionospheric factors may contribute to these unusual signatures. Notably, such phenomena are often associated with specific combinations of geomagnetic storms and substorms. Our findings may provide new insights into the complex processes of solar wind–magnetosphere–ionosphere coupling and help refine our understanding of the sequence of events during geomagnetic storms and substorms.