Electron flux alert issued on March 26, 2026

An alert for electron 2 MeV integral flux exceeding 1,000 pfu was issued at 04:59 UTC on March 26, 2026, by NOAA’s Space Weather Prediction Center. The continued alert began on March 22, 2026, at 14:30 UTC, with the maximum 2 MeV electron flux reaching 8,452 pfu yesterday. The elevated electron flux is expected to persist through March 28, 2026.

Potential impacts from this event include significant charging of satellite systems, resulting in an increased risk to satellite operations. Operators should be aware that elevated electron fluxes can cause surface charging effects that may disrupt satellite function or increase the risk of anomalies.

The latest forecast discussion confirms that greater than 2 MeV electron flux at geosynchronous orbit remains at high levels. No significant solar flare or Earth-directed coronal mass ejection has been identified as a direct cause for this alert. The warning remains active as the elevated levels continue.