Electron 2 MeV Integral Flux Alert issued on April 11, 2026

An alert for Electron 2 MeV Integral Flux exceeding 1,000 pfu was issued by NOAA’s Space Weather Prediction Center on April 11, 2026, at 13:06 UTC. This continued alert, serial number 3672, follows a previous alert (serial 3671) and has been in effect since April 3, 2026, at 09:20 UTC. The alert was triggered as electron integral flux levels remained above the threshold, with the maximum observed flux reaching 1,714 pfu on April 10, 2026.

Potential impacts of this elevated electron flux include significant charging on satellite systems, which increases the risk to satellite operations. Such space weather events are closely monitored as they can affect satellite health and longevity.

According to the latest forecast discussion issued at 12:30 UTC on April 11, the greater than 2 MeV electron flux has remained at high levels, with a peak flux of 1,713 pfu observed at 14:30 UTC on April 10. The forecast predicts normal to moderate levels on April 11 and 12, with a return to high levels likely on April 13.