Solar Storms at CME Halo
Right now
The most recent data we hold from SOHO LASCO arrived 3 hours ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Reported by SOHO LASCO 101 days ago.
What the source measured
SOHO LASCO reported: Coronal Mass Ejection detected at 2026-06-04T17:23Z. Linear speed: 1009 km/s. Half-angle: 18°. Full halo CME — potential global geomagnetic impact. Fast, narrow CME first seen to the SW in STEREO A COR2 and to the S in SOHO LASCO C2/C3 and GOES CCOR-1 imagery. A potential source is visible as moving/opening field lines along the southern limb in
How we know
One source: SOHO LASCO. Not yet confirmed by a second, independent source.
Our own score for this event is 15 out of 100, at 50 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Solar Storms |
| Severity | High |
| Calamity Score (ours) | 15 / 100 |
| Our confidence | 50% |
| Coordinates | 0.0000, 0.0000 |
| Timestamp | 2026-06-04T17:23:00.000Z |
| Source | https://kauai.ccmc.gsfc.nasa.gov/DONKI/view/CME/46644/-1 |
Score Breakdown
Technical Details
| ActivityId | 2026-06-04T17:23:00-CME-001 |
| SpeedKms | 1009 |
| HalfAngleDeg | 18 |
| IsHalo | true |
| EarthDirected | false |
| EventType | cme |
| Note | Fast, narrow CME first seen to the SW in STEREO A COR2 and to the S in SOHO LASCO C2/C3 and GOES CCOR-1 imagery. A potential source is visible as moving/opening field lines along the southern limb in GOES SUVI 284 after the start time of the CME from STEREO A's perspective. Additionally, there is an |
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.
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