GEOCOSMIC STORM NOVEMBER 9-15, 2025

Authors

DOI:

10.26577/JPEOS20261284

Keywords:

Coronal mass ejection, Solar wind, Magnetospheric storm, Ionospheric storm

Abstract

This study examines a unique heliogeophysical event: X- and M-class solar flares from November 9–11, 2025, accompanied by a coronal mass ejections directed toward Earth. The disturbed state of near-Earth space during the period from November 11–15, 2025, was studied using solar wind parameters. The solar wind proton density  during this period showed several spikes, the solar wind velocity increased to 1000 km/s, and a sharp increase in proton temperature  was observed. The geomagnetic field was strongly disturbed, with a Kp-index of 9. Minute values ​​of the AL, AU, SYM-D, and SYM-H indexes, as well as two-hourly values ​​of the global electron content, were also used to describe the event. This paper examines physical processes on the Sun, in the interplanetary magnetic field, magnetosphere, and upper layers of the Earth's atmosphere during a unique geocosmic storm, making it interdisciplinary in nature. It has been established that a powerful solar storm in November 2025 caused extreme geomagnetic and negative ionospheric storms.

Author Biographies

  • S.N. Mukasheva, Farabi University

    Mukasheva Saule Nurmukhanbetovna (corresponding author) - Candidate of Physical and Mathematical Sciences, Associate Professor and Researcher at the Department of Theoretical and Nuclear Physics of the Physics and Technology Faculty of the Al-Farabi Kazakh National University (Almaty, Kazakhstan, email: snmukasheva@gmail.com)

  • L.F. Chernogor, V. N. Karazin Kharkiv National University

    Chernogor Leonid Feoktystovych - Doctor of Physical and Mathematical Sciences, Professor, Corresponding Member of the National Academy of Sciences of Ukraine, Academician of the National Academy of Sciences of Higher Education of Ukraine, Head of the Department of Space Radiophysics of the V. N. Karazin Kharkiv National University (Kharkiv, Ukraine, email: Leonid.F.Chernogor@gmail.com)

  • V.I. Kapytin, Ionosphere institute

    Kapytin Vitaly, Master of Science, research fellow at the Institute of the Ionosphere (Almaty, Kazakhstan, email: kapytin@ionos.kz)

  • G.B. Tileu, Ionosphere institute

    Tileu Gulbanu, PhD-student, Department of Theoretical and Nuclear Physics, Faculty of Physics and Technology, Al-Farabi Kazakh National University and MNS Institute of Ionosphere (Almaty, Kazakhstan, email: tileugulbanu061199@gmail.com)

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Published

2026-06-25

Issue

Vol. 28 No. 1 (2026): JOURNAL OF OPEN SYSTEMS EVOLUTION PROBLEMS

Section

GEOPHYSICS

How to Cite

GEOCOSMIC STORM NOVEMBER 9-15, 2025. (2026). Journal of Open Systems Evolution Problems, 28(1), 32-44. https://doi.org/10.26577/JPEOS20261284