Electron integral flux alert issued on October 8

An alert for elevated electron 2 MeV integral flux was issued by NOAA’s Space Weather Prediction Center on October 8, 2025, at 05:36 UTC. The alert, active since October 1, 2025, follows the continued observation of high electron flux levels, with a peak of 10,522 pfu reported yesterday.

Potential impacts include significant charging of satellite systems, which may increase risk to those systems. High electron fluxes can potentially lead to anomalies and malfunctions in satellite operations due to increased internal charging.

The alert is associated with persistent high electron flux levels noted in the latest SWPC forecast discussion. These levels are attributed to ongoing influences from a recent high speed stream, with flux expected to remain elevated through October 8 before returning to moderate values by October 9. No significant solar flares or proton increases were reported as direct triggers for this event.