Electron flux alert issued on August 31, 2026

An alert for Electron 2 MeV Integral Flux exceeding 1,000 pfu was issued on August 31, 2026. According to the official statement, the alert was triggered when the threshold was reached at 11:46 UTC, as observed by GOES-19. The maximum value recorded for the previous day was 1,264 pfu.

The alert indicates that the observed integral electron flux surpassed the 1,000 pfu mark, which can cause minor impacts to spacecraft operations due to increased surface charging events. These levels are monitored closely as they may influence satellite and space-based technology performance in the affected regions.

The NOAA Space Weather Prediction Center forecast discussion reported continued enhanced solar wind conditions caused by a positive polarity CH HSS, but no significant solar flares or major eruptive events were documented. The electron flux increase is expected to continue with high levels forecast for September 1 and 2, while the greater than 10 MeV proton flux remains at background levels.