Electron Flux Alert issued on October 13, 2025

An Electron Flux Alert was issued on October 13, 2025, after the 2 MeV integral electron flux levels exceeded 1,000 particles per square centimeter per steradian per second (pfu). This continued alert follows a previous continuation that began on October 1, 2025 at 13:25 UTC. The maximum 2 MeV flux measured yesterday reached 1,707 pfu, indicating persistent high levels.

Potential impacts from this event include significant charging of satellite systems. As a result, there is an increased risk to satellite operations due to the enhanced electron environment in geospace.

According to the latest forecast discussion from the NOAA Space Weather Prediction Center, the greater than 2 MeV electron flux has been reaching high levels, and is expected to remain elevated through October 15, 2025. The proton flux remains at background levels during this period.