Abstract The threefold daytime electron density increases, along with strong poleward meridional winds exceeding 200 m/s were captured by Sanya Incoherent Scatter Radar (SYISR) during the geomagnetic storm of 12 November 2025. The great ionospheric enhancements were extending to mid‐latitudes over 40° observed by total electron content (TEC) from Beidou geostationary satellites. Thermosphere‐Ionosphere Electrodynamics Global Circulation Model (TIEGCM) reproduced the observed features during this