Space Weather Events
Coronal mass ejection — 2026-10-04 07:24 UTC
Faint CME observed to the SW in SOHO LASCO C2, poorly observed in LASCO C3 and GOES CCOR-1, and not in STEREO A COR2; mostly overlapped with following CME: 2026-10-04T07:36Z. The source is likely the first of two paired B-class flares and respective field line movement from AR 14546; this front associated with the B3.2 class flare peaking at 2026-10-04T06:19Z and field line movement in SDO AIA 171.
| Event type | Coronal mass ejection |
|---|---|
| Date | |
| Flare class | — |
| CME speed | 336 km/s |
| CME analyses | 1 |
| Linked events | 2026-10-04T06:13:00-FLR-001 |
| 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) | 2026-10-04T18:06Z | 336 | 20 | -12 / 62 | S | SWPC_CAT | 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.
Provenance
| Source | NASA DONKI — Space Weather Events |
|---|---|
| Feed | DONKI CME |
| Provider data as of | not stated |
| First observed here | 12 Oct 2026, 20:02 EDT |
| Last observed here | 14 Oct 2026, 11:00 EDT |
| In latest snapshot | Yes |
| Record identifier | 430ab942-ba42-51ae-ada6-a935f3dbe73a |
Local observation history
What this site observed; not complete provider history.
- — Added