Electron 2 MeV Integral Flux Alert issued on November 8

An Electron 2 MeV Integral Flux Alert was issued on November 8, 2026, following the exceedance of the 1,000 pfu threshold at 22:45 UTC. The event was detected by the GOES-19 satellite, and the alert was officially issued at 23:24 UTC by NOAA’s Space Weather Prediction Center.

Exceeding this electron flux threshold can indicate elevated radiation levels in Earth’s outer radiation belt, which may pose increased risks to satellites and spacecraft operating in geosynchronous orbit. Elevated electron fluxes can lead to surface charging and deep dielectric charging on spacecraft, potentially causing anomalies or operational interruptions.

According to the latest SWPC forecast discussion, electron flux levels were at moderate levels during the period leading up to the alert, with predictions suggesting that high levels are likely by November 10. No S-scale Solar Radiation Storm was reported at this time, and proton flux remained at background levels.