In this study, we investigate the ionospheric disturbances caused by a moderate geomagneticstorm (maximum Kp = 6) occurring between 26th February and 1 March 2023. Ionospheric response for thecoupling between the solar wind, magnetosphere, and ionosphere systems can be observed across variousregions of the globe and it may vary according to the local/regional background ionospheric conditions. Weanalyzed space and ground‐based instruments (e.g., ionosondes, total electron content, GUVI imager,incoherent scatter radar) covering from Antarctica to equatorial latitudes in South America. From a globalperspective, we observed two ionospheric storms. The first, with a negative phase observed as a significantdecrease (>30%) in the F2‐layer critical frequency (foF2), occurred on February 27th at 01:00 UT. This negativephase storm was observed in all the considered regions, with the intensity...