Electron 2 MeV Integral Flux Alert issued on August 23, 2026

An Electron 2 MeV Integral Flux Alert was issued on August 23, 2026, after electron flux levels exceeded the 1,000 pfu threshold. This continued alert began at 11:05 UTC on August 21, 2026, and remains in effect as of the latest update at 09:21 UTC on August 23, 2026. The highest recorded flux in this period reached 1,000 pfu at 09:15 UTC on August 23, according to official NOAA SWPC data.

This continued alert indicates elevated levels of energetic electrons, which may result in increased background noise and potential charging effects on satellite systems within Earth’s outer radiation belt. No Solar Radiation Storms have reached the S1 – Minor level or higher based on the greater than 10 MeV proton flux, which remains below threshold values.

According to NOAA’s latest forecast discussion, solar activity remained at low levels during this time period, with no Earth-directed coronal mass ejections detected. The high electron flux is expected to continue over the next several days, with quiet geomagnetic and solar wind conditions prevailing.