07:55SpaceS1 solar radiation storm: SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfubackfillNOAA SWPC
Sat 5 Sep 2026
19:58SpaceS1 solar radiation storm: EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expectedbackfillNOAA SWPC
12:33SpaceS1 solar radiation storm: ALERT: Proton Event 10meV Integral Flux exceeded 10pfubackfillNOAA SWPC
12:20SpaceS1 solar radiation storm: WARNING: Proton 10MeV Integral Flux above 10pfu expectedbackfillNOAA SWPC
What this page is not. It does not predict anything and it does not beat the news: almost every record here is published openly and reaches reporters the same minute it reaches this page. Where the slow signals come from. Internet outages, military aviation, emptied airspace, GPS interference and ship traffic are measured on our own collector server and publish only after each has learned its normal. If you would use any of this as alerts or through an API, write to [email protected]. Rows marked backfill came from a source's own history rather than from live collection, so they never count toward how fast we saw something.
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A source that stops answering does not go quiet here. Its rows stop and this list says when it was last heard from, because no data is not the same as nothing happening.
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