Electron Flux Alert issued on August 21

An Electron 2 MeV Integral Flux Alert was issued on August 21, 2025, after flux levels exceeded 1,000 pfu, as measured by GOES19 at 17:35 UTC. The alert was officially released by the NOAA Space Weather Prediction Center at 17:44 UTC.

Satellite systems may experience significant charging resulting in increased risk to satellite systems during this period of elevated electron flux. Such conditions can impact satellite operations and may lead to anomalies due to internal or surface charging effects.

According to the latest SWPC forecast discussion, the increased electron flux was influenced by ongoing high-speed solar wind stream conditions. The overall solar activity remained low with no Earth-directed coronal mass ejections observed. The electron flux is anticipated to remain at normal to moderate levels through August 21, with the possibility of returning to high levels on August 22 and continuing into August 23.