Electron 2 MeV Integral Flux Alert issued on October 26

An alert has been issued for Electron 2 MeV Integral Flux exceeding 1,000 pfu, effective as of October 26, 2026, at 05:17 UTC. This continued alert follows ongoing elevated flux levels first noted on October 23, 2026, at 11:40 UTC. The peak 2 MeV electron flux observed yesterday reached 2,864 pfu at 18:20 UTC on October 25, 2026.

Electron flux levels above 1,000 pfu can present increased risks for spacecraft operations, including satellite charging and potential impacts to onboard electronics. Such elevated levels are monitored closely to mitigate risks for satellites operating in high-Earth orbits. According to the Space Weather Prediction Center, these conditions are expected to persist through at least October 28.

No major solar activity triggered this alert, with solar activity remaining at low levels and no significant Earth-directed coronal mass ejections observed during the period. Solar wind parameters and geomagnetic activity also remained nominal and quiet, respectively, during this interval.