Electron 2 MeV Integral Flux Alert issued on November 5

An Electron 2 MeV Integral Flux Alert was issued after flux levels exceeded 1,000 pfu, according to data from the GOES19 satellite. The threshold was surpassed at 14:45 UTC on November 5, 2025, with the alert formally issued at 14:53 UTC the same day. This elevated electron flux is monitored by the U.S. National Oceanic and Atmospheric Administration (NOAA) Space Weather Prediction Center (SWPC).

Potential impacts from this event include significant charging of satellite systems. Increased electron flux can enhance the probability of satellite surface charging, which poses an elevated risk to satellite operation and reliability in affected regions. Operators of satellite systems may experience disruptions or increased risk during the alert period.

According to the latest SWPC Forecast Discussion, the elevated electron flux is attributed to the influence of a coronal hole high speed stream (CH HSS) as Earth moves out of the geoeffective position, causing the 2 MeV electron flux to exceed the 1,000 pfu threshold during diurnal maxima. The overall trend for electron flux is currently decreasing but elevated levels were recorded, prompting the issuance of this alert.