Solar Storms at M3.0 Solar Flare
Reported by DONKI today.
What the source measured
DONKI reported: M3.0 solar flare detected. Minor HF radio degradation on sunlit side of Earth.
How we know
Confirmed by 2 independent sources, including DONKI.
Our own score for this event is 17 out of 100, at 55 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Solar Storms |
| Severity | High |
| Calamity Score (ours) | 17 / 100 |
| Our confidence | 55% |
| Coordinates | 0.0000, 0.0000 |
| Timestamp | 2026-09-02T19:20:00.000Z |
| Source | https://kauai.ccmc.gsfc.nasa.gov/DONKI/view/FLR/48472/-1 |
Score Breakdown
Technical Details
| Scale | R1 |
| ClassType | M3.0 |
| EventType | radio_blackout |
| SourceLocation | N12E90 |
| DonkiId | 2026-09-02T18:57:00-FLR-001 |
| RadioRisk | minor_degradation |
| Goes Xray FlareClass | M3.0 |
| Goes Xray Letter | M |
| Goes Xray Level | 3.01 |
| Goes Xray PeakFluxWm2 | 0 |
| Goes Xray EnergyBand | 0.1-0.8nm |
| Goes Xray EventType | solar_flare |
| Soho Lasco ActivityId | 2026-09-02T19:36:00-CME-001 |
| Soho Lasco SpeedKms | 1323 |
| Soho Lasco HalfAngleDeg | 39 |
| Soho Lasco IsHalo | true |
| Soho Lasco EarthDirected | false |
| Soho Lasco EventType | cme |
| Soho Lasco Note | Bright CME visible to the NE in SOHO LASCO C2, C3 and GOES CCOR-1 imagery. This CME is not visible in STEREO A COR2 imagery due to a data gap. The source of this CME is an M3.0 flare from an unnumbered region just beyond the NE limb. It is possible this is the returning region 14507 (NXX) which rota |
| MergedSources | [{"id":"goes_xray_M3.0_29806280","source":"goes_xray","severity":"medium","severityValue":50,"timestamp":1788376800000,"latitude":0,"longitude":0},{"id":"soho_lasco_2026_09_02T19_36_00_CME_001","source":"soho_lasco","severity":"high","severityValue":75,"timestamp":1788377760000,"latitude":0,"longitude":0}] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Want to know when something happens in this area?
Calamity.live data shows a solar storm event with CalamityScore 17/100, at M3.0 Solar Flare, based on data from donki. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.