Electron 2 MeV Flux Alert issued on October 25, 2026

An alert for Electron 2 MeV Integral Flux exceeding 1,000 pfu was issued by the NOAA Space Weather Prediction Center on October 25, 2026, at 09:27 UTC. The alert continues from October 23, 2026, at 11:40 UTC, indicating persistently elevated levels of energetic electrons in the near-Earth environment. The maximum 2 MeV electron flux recorded yesterday was 3,259 pfu at 15:30 UTC on October 24, 2026.

Elevated electron flux at these levels can lead to increased risk of surface charging on satellite components, which may result in anomalies or operational issues for spacecraft in geostationary orbit. Satellite operators are typically advised to monitor systems closely during these conditions. There are no reported impacts to ground-based systems from this alert level.

The latest forecast discussion confirms that the greater than 2 MeV electron flux has reached high levels and is expected to remain elevated through October 27, 2026. No new Earth-directed coronal mass ejections (CMEs) were observed, and overall solar activity remained low, suggesting a quiet space weather environment aside from the high electron flux.