Electron 2 MeV Integral Flux Alert issued on March 30, 2026

An Electron 2 MeV Integral Flux Alert was issued at 07:42 UTC on March 30, 2026, by NOAA’s Space Weather Prediction Center. The alert states that the electron integral flux exceeded 1,000 pfu at geosynchronous orbit, a condition that has continued since March 22, 2026, with a reported peak of 3,750 pfu on March 29.

Potential impacts include significant charging of satellite systems, which increases the risk to satellite operations. This level of electron flux is known to raise the probability of satellite anomalies or disruptions, according to NOAA classifications.

The latest forecast discussion notes that electrons greater than 2 MeV reached a maximum of 3,750 pfu at 15:20 UTC on March 29. The greater than 2 MeV electron flux is expected to remain at normal to moderate levels for March 30 and 31, with high levels likely on April 1. The greater than 10 MeV proton flux remains at background levels. There were no Earth-directed coronal mass ejections observed, and overall solar activity was reported as low.