Space Weather Events
Coronal mass ejection — 2026-10-16 17:00 UTC
Faint and narrow CME seen to the E in early SOHO LASCO C2 imagery and not seen in C3, GOES CCOR-1 and STEREO A COR2 imagery, likely because of its faintness. The start time is likely at least an hour earlier but the CME becomes clear around 17Z. No clear source found, so the CME is likely far sided.
| Event type | Coronal mass ejection |
|---|---|
| Date | |
| Flare class | — |
| CME speed | 479 km/s |
| CME analyses | 1 |
| Linked events | — |
| Instruments | SOHO: LASCO/C2 |
Research information from NASA DONKI, not an operational warning. NOAA SWPC is the official US source of space weather forecasts.
CME analyses
| Analysis | Time at 21.5 R☉ (UTC) | Speed (km/s) | Half angle (°) | Lat / lon (°) | Type | Technique | Model runs (WSA-ENLIL) |
|---|---|---|---|---|---|---|---|
| #1 (opens in a new tab) Most accurate (DONKI) | 2026-10-17T00:38Z | 479 | 16 | -10 / — | S | Plane-of-sky | — |
Analyses are measurements and modelled predictions submitted to DONKI; the "most accurate" mark is DONKI's own.
Provenance
| Source | NASA DONKI — Space Weather Events |
|---|---|
| Feed | DONKI CME |
| Provider data as of | not stated |
| First observed here | 16 Oct 2026, 18:54 EDT |
| Last observed here | 13 Nov 2026, 19:00 EST |
| In latest snapshot | Yes |
| Record identifier | 97969557-a13d-5872-a02b-5d3d3d623b41 |
Local observation history
What this site observed; not complete provider history.
- — Added