Space Weather Events
Coronal mass ejection — 2026-10-16 06:09 UTC
Faint, wide CME visible to the SW in STEREO A COR2 only. The CME is not clearly seen in SOHO LASCO C2/C3 or GOES CCOR-1 imagery. The potential source is not clearly visible. There is a data gap in STEREO A COR2 and EUV imagery in real-time from 2026-10-15T12:09Z to 2026-10-16T06:09Z. A potential source may be seen in STEREO A EUV imagery anywhere from longitudes W90 to approximately W120 as a gradual, minor dimming may be seen after the data gap starting around 2026-10-16T06:09Z. However, there are not strong post-eruption signatures in imagery, and there is low confidence in this analysis of the source location.
| Event type | Coronal mass ejection |
|---|---|
| Date | |
| Flare class | — |
| CME speed | 324 km/s |
| CME analyses | 1 |
| Linked events | — |
| Instruments | STEREO A: SECCHI/COR2 |
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) | 2026-10-16T16:20Z | 324 | 45 | -31 / — | 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, 11:52 EDT |
| Last observed here | 13 Nov 2026, 19:00 EST |
| In latest snapshot | Yes |
| Record identifier | e2c1c5dd-67d7-56c6-9653-cab10aedfa83 |
Local observation history
What this site observed; not complete provider history.
- — Added