Electron 2 MeV Integral Flux Alert issued on April 10

An Electron 2 MeV Integral Flux Alert was issued on April 10, 2026, at 14:07 UTC, as the electron flux at energies greater than 2 MeV exceeded 1,000 pfu. This alert continues an earlier notice, with elevated flux levels ongoing since April 3, 2026, at 09:20 UTC. The maximum 2 MeV electron flux recorded on April 9 reached 10,680 pfu.

According to the alert, satellite systems may experience significant charging, resulting in an increased risk to satellite systems. High electron flux levels in this range are associated with greater susceptibility to surface charging and deep dielectric charging in satellite electronics, potentially leading to operational anomalies or damage.

The most recent space weather forecast discussion indicated that the high levels of electron flux persisted, with a measured peak of 10,679 pfu on April 9. No significant solar flares or Earth-directed coronal mass ejections were observed during this period, and solar activity was reported at very low levels. The elevated electron flux is expected to return to normal to moderate levels over the next several days.