Space Weather Events
Coronal mass ejection — 2026-10-23 10:24 UTC
This CME is visible to the northeast in SOHO LASCO C2/C3 and GOES CCOR-1 imagery. Despite data availability during this time, this event is likely far-sided from the perspective of STEREO A and is therefore not observed by STEREO A COR2 imagery. The source is likely far-sided as there are no source signatures on the Earth-facing disk around the time of this event.
| Event type | Coronal mass ejection |
|---|---|
| Date | |
| Flare class | — |
| CME speed | 337 km/s |
| CME analyses | 1 |
| Linked events | — |
| Instruments | SOHO: LASCO/C2, SOHO: LASCO/C3, GOES: CCOR-1 |
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) | 2026-10-23T20:44Z | 337 | 17 | 36 / — | 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 | 23 Oct 2026, 20:00 EDT |
| Last observed here | 13 Nov 2026, 19:00 EST |
| In latest snapshot | Yes |
| Record identifier | b203e81e-1122-565a-bd2f-9d5ad0af8b13 |
Local observation history
What this site observed; not complete provider history.
- — Added