First published · Last updated
Alert: Proton Event 10meV Integral Flux exceeded 10pfu
NOAA SWPC issued an alert that the 10 MeV integral proton flux exceeded 10 pfu with Begin Time 2026-09-05 16:15 UTC and Issue Time 2026-09-05 16:33 UTC. The alert is rated NOAA Scale: S1 - Minor.
Categories: science-and-space
Generated scores
Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.
- Confidence
- 6/10
- Geographic reach
- 5/10
- Global importance
- 2/10
- Impact magnitude
- 2/10
- Positivity
- 3/10
- Urgency
- 4/10
Why it matters
NOAA issued an S1 (Minor) proton-event alert.

