How to Monitor Space Weather and Why It Matters for Your Business

In February 2022, a geomagnetic storm caused SpaceX to lose 38 of 49 newly launched Starlink satellites. The satellites encountered unexpectedly high atmospheric drag during deployment and couldn't recover. It was a dramatic reminder that space weather isn't just a scientific curiosity: it's a business risk.

What Is Space Weather?

Space weather refers to conditions in the space environment driven by the Sun's activity. The key phenomena:

• Solar flares: Sudden bursts of electromagnetic radiation from the Sun, classified by X-ray intensity (A, B, C, M, X, with X being the strongest)
• Coronal Mass Ejections (CMEs): Massive expulsions of magnetized plasma that can reach Earth in 1-3 days
• Solar wind: Continuous stream of charged particles from the Sun
• Geomagnetic storms: Disturbances to Earth's magnetosphere caused by CME impacts, measured on the Kp index (0-9) and NOAA G-scale (G1-G5)
• Solar Energetic Particles (SEPs): High-energy protons accelerated by solar flares and CME shocks

Who Is Affected?

Satellite Operators

Geomagnetic storms increase atmospheric drag on LEO satellites (as happened to Starlink), cause surface charging on GEO satellites, and can degrade solar panels and electronics through radiation damage. Operators need to understand storm forecasts for launch windows, orbit maintenance, and anomaly investigation.

Aviation

During strong solar events, airlines reroute polar flights to lower latitudes to reduce radiation exposure for crew and passengers. HF radio communications, critical for oceanic flights, can be disrupted for hours.

Power Grid Operators

Geomagnetically induced currents (GICs) from strong storms can damage high-voltage transformers. The 1989 Quebec blackout, caused by a G5 storm, left 6 million people without power for 9 hours.

GPS/GNSS Users

Ionospheric disturbances during storms degrade GPS accuracy from meters to tens of meters, affecting precision agriculture, surveying, autonomous vehicles, and financial timestamping.

Communications

HF radio blackouts on the sunlit side of Earth can last from minutes to hours during X-class flares. Satellite communication links can experience scintillation and signal degradation.

Solar Cycle 25: An Active Sun

Solar Cycle 25 began in December 2019 and has been more active than initially predicted. NASA and NOAA announced in October 2024 that the Sun had reached its solar maximum period; strong storms remain possible in the years after maximum.

Notable events in this cycle include multiple X-class flares in 2024-2025 and the most intense geomagnetic storm since 2003 in May 2024 (G5-level), which produced visible aurora as far south as Florida and Mexico.

What to Monitor

• Kp index: Planetary geomagnetic activity indicator (0-9). Kp ≥ 5 is a geomagnetic storm.
• Solar X-ray flux: Indicates flare activity. M-class and above warrant attention.
• Solar wind speed and density: Elevated values (speed > 500 km/s) can indicate incoming disturbances.
• Interplanetary Magnetic Field (IMF) Bz: When Bz turns strongly southward (< -10 nT), geomagnetic storm intensity increases significantly.
• Proton flux: Elevated proton levels indicate SEP events that can affect satellites and polar aviation.

Key Data Sources

• NOAA Space Weather Prediction Center (SWPC): Official U.S. space weather forecasts, alerts, and warnings
• NASA DONKI: Database Of Notifications, Knowledge, Information, which catalogs CMEs, flares, and SEP events
• L1 solar wind monitors: Real-time solar wind measurements at the L1 Lagrange point, providing 15-60 minute warning before CME arrival. NOAA's real-time solar wind data comes from DSCOVR and ACE, with NOAA's SOLAR-1 and NASA's IMAP starting in 2026 to replace them

Monitor Space Weather with SpaceNexus

SpaceNexus's Space Environment module integrates data from NOAA SWPC, NASA DONKI, and real-time solar wind monitors to provide a comprehensive space weather dashboard. Track Kp index, solar flare activity, CME forecasts, and radiation belt conditions, with alerts for events that could affect your operations.

Start monitoring space weather for free.