Electron flux alert issued on April 9, 2026

An alert has been issued for Electron 2 MeV Integral Flux exceeding 1,000 pfu as of April 9, 2026. According to NOAA SWPC, the alert began on April 3, 2026, at 09:20 UTC and remains in effect. The maximum recorded 2 MeV electron flux for yesterday was 7,322 pfu.

According to the alert, satellite systems may experience significant charging, resulting in increased risk to satellite operations. High levels of energetic electron flux can create surface and deep dielectric charging in satellite electronics, which may increase the likelihood of anomalies or operational disruptions.

The latest forecast discussion indicates that the greater than 2 MeV electron flux has remained at high levels, with a peak of 7,322 pfu registered at 08/1555 UTC. The electron flux is expected to remain high through April 9 before decreasing to moderate levels on April 10 and 11. Proton flux levels remain at background values. No major flare or solar event has been reported as the trigger for this elevated electron activity.