Electron 2 MeV Integral Flux Alert issued on August 1, 2026

An alert for Electron 2 MeV Integral Flux exceeding 1,000 pfu was issued at 16:44 UTC on August 1, 2026. The threshold was reached based on data from the GOES-19 satellite, with the maximum flux noted yesterday at 1,157 pfu.

Elevated electron flux levels can present increased risks for satellites in geostationary orbit, potentially leading to deep dielectric charging and affecting spacecraft operations. The alert specifically indicated that the greater than 2 MeV electron flux exceeded the 1,000 pfu threshold, prompting monitoring and risk assessment for operators of affected technologies.

According to the latest forecast discussion from NOAA SWPC, the greater than 2 MeV electron flux had been at normal to moderate levels over the past day. No significant solar flare activity or Earth-directed coronal mass ejections (CMEs) were reported in the current period. The discussion also notes a continued chance for S1 – Minor Solar Radiation Storms over the next few days, though no major triggering solar events were observed in the period leading up to this alert.