Space Weather Events
Coronal mass ejection — 2026-10-26 09:00 UTC
CME observed to the SW in SOHO LASCO C2/C3 and GOES CCOR-1 and to the SE in STEREO A COR2. This CME precedes and is partially overlapped by the larger CME: 2026-10-26T09:48Z, very likely from the same source. The source is newly developed AR 14561, with two distinct but close proximity eruptive signatures, likely responsible for this leading edge and CME: 2026-10-26T09:48Z. For this leading edge, the eruptive source is likely field line movement/brightening in SDO AIA 171/193, and on-disk brightening in SDO AIA 304 and STEREO A EUVI 304, starting around 2026-10-26T08:31Z and centered around S09W72. This eruption is also associated with a C1.9 flare peaking at 2026-10-26T08:38Z, observed in SDO AIA 131.
| Event type | Coronal mass ejection |
|---|---|
| Date | |
| Flare class | — |
| CME speed | 873 km/s |
| CME analyses | 1 |
| Linked events | 2026-10-26T08:21:00-FLR-001 |
| Instruments | SOHO: LASCO/C2, SOHO: LASCO/C3, STEREO A: SECCHI/COR2, 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) | 2026-10-26T12:58Z | 873 | 11 | -7 / 43 | C | SWPC_CAT | Shock arrival not predicted; Earth glancing blow: no run (opens in a new tab) Shock arrival not predicted; Earth glancing blow: no run (opens in a new tab) |
Analyses are measurements and modelled predictions submitted to DONKI; the "most accurate" mark is DONKI's own.
Notifications sent
- 20261026-AL-002 (opens in a new tab) 2026-10-26T17:15Z
Provenance
| Source | NASA DONKI — Space Weather Events |
|---|---|
| Feed | DONKI CME |
| Provider data as of | not stated |
| First observed here | 26 Oct 2026, 20:00 EDT |
| Last observed here | 12 Nov 2026, 19:01 EST |
| In latest snapshot | Yes |
| Record identifier | 1fa8ea6f-41f6-592a-8c6f-602a4b83a034 |
Local observation history
What this site observed; not complete provider history.
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