Electron 2 MeV Integral Flux Alert issued on April 15

An alert for Electron 2 MeV Integral Flux exceeding 1,000 pfu was issued by the NOAA Space Weather Prediction Center on April 15, 2026, at 07:56 UTC. The continuation alert began on April 3, 2026, at 09:20 UTC. The maximum 2 MeV flux recorded on April 14 was 1705 pfu, with high levels of energetic electron activity persisting at geosynchronous orbit.

Potential impacts from this condition include significant charging of satellite systems, which increases the risk of operational anomalies or damage. Operators of satellites and space-based assets should be alert for possible disruptions or charging-related issues during periods of elevated electron flux.

According to the latest forecast discussion, solar activity remained at very low levels, with only isolated B-class solar flares. The electron flux greater than 2 MeV at geosynchronous orbit reached a peak of 1705 pfu at 14/1445 UTC, and these elevated levels are expected to continue through April 17. The greater than 10 MeV proton flux remained at background levels, and no significant solar wind or geomagnetic disturbances were reported during this period.