CME Halo — 661 km/s
Coronal Mass Ejection detected at 2026-05-20T17:15Z. Linear speed: 661 km/s. Half-angle: 22°. Full halo CME — potential global geomagnetic impact. Two-lobed CME with a somewhat irregular front seen to the NW in GOES CCOR-1 and a loop-like faint partial halo front seen to the NNE in COR2A and covered by the scheduled data gap in SOHO. The source
Geographic Context
This solar storm event occurred at coordinates 0.00°, 0.00°.
Event Assessment
This event is a solar storm event classified as medium severity. Calamity.live has classified it as "medium" severity with a severity value of 55. The computed Calamity Score is 22 out of 100, suggesting contained impact at this time. The primary scoring components are: historical (80), intensity (20), population (20). Data for this event was sourced from soho_lasco, one of the 250 scientific monitoring sources aggregated by Calamity.live.
Regional Monitoring Context
This solar storm event is being tracked through Calamity.live's global monitoring network, which aggregates data from 250 scientific sources. Real-time monitoring and multi-source verification help ensure data accuracy and timely reporting of significant natural hazard events worldwide.
Event Data
| Type | Solar Storm |
| Severity | medium |
| Severity Value | 55 |
| Calamity Score | 22 / 100 |
| Confidence | 49% |
| Coordinates | 0.0000, 0.0000 |
| Timestamp | 2026-05-20T17:15:00.000Z |
| Source | https://kauai.ccmc.gsfc.nasa.gov/DONKI/view/CME/46280/-1 |
Score Breakdown
Technical Details
| ActivityId | 2026-05-20T17:15:00-CME-001 |
| SpeedKms | 661 |
| HalfAngleDeg | 22 |
| IsHalo | true |
| EarthDirected | false |
| EventType | cme |
| Note | Two-lobed CME with a somewhat irregular front seen to the NW in GOES CCOR-1 and a loop-like faint partial halo front seen to the NNE in COR2A and covered by the scheduled data gap in SOHO. The source is likely the eruption of a long filament east of AR 14436 (N20W55) best seen in STEREO A EUV 195/30 |
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.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Calamity.live data shows a solar storm event with CalamityScore 22/100, based on data from soho_lasco. Source: Calamity.live, a platform aggregating real-time data from 207 scientific monitoring sources.