Electron 2 MeV Integral Flux Alert issued on April 22, 2026

An Electron 2 MeV Integral Flux Alert was issued on April 22, 2026, following observed elevated levels exceeding 1,000 pfu since April 19, 2026. The highest recorded value over the past day reached 4,987 pfu, as reported by the NOAA Space Weather Prediction Center. The alert remains in effect, with the elevated condition confirmed at geosynchronous orbit.

Potential impacts include significant charging of satellite systems, increasing the risk to onboard satellite components and overall satellite operational integrity. High-energy electron flux events of this scale are known to cause deep dielectric charging and enhance the likelihood of satellite anomalies, particularly for spacecraft in geosynchronous orbits.

Forecasts indicate that the greater than 2 MeV electron flux is expected to remain at moderate to high levels from April 22 to April 24, 2026. No major solar flares or Earth-directed coronal mass ejections have been observed in the latest reporting period. The current conditions are attributed to the persistence of high-speed solar wind streams from coronal holes, contributing to the ongoing elevated electron environment.