Space Weather Events
Coronal mass ejection — 2026-10-25 05:00 UTC
CME observed to the NE in SOHO LASCO C2/C3 and GOES CCOR-1, starting very slow. It is either not yet seen in STEREO A COR2 due to a data gap beginning at 2026-10-25T10:09Z or too faint to resolve the leading edge. The source appears to be a mix of continued slow field line movement over the E limb following CME 2026-10-25T03:12Z, whose eruption began around 2026-10-25T02:09Z in SDO AIA 171/193/304 and GOES SUVI 171/195/284/304, and/or further field line movement in GOES SUVI 171/284 starting around 2026-10-25T04:30Z.
| Event type | Coronal mass ejection |
|---|---|
| Date | |
| Flare class | — |
| CME speed | 246 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) | 2026-10-25T21:59Z | 246 | 30 | 21 / — | 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 | 25 Oct 2026, 20:01 EDT |
| Last observed here | 14 Nov 2026, 19:03 EST |
| In latest snapshot | Yes |
| Record identifier | 068e516e-d14b-547b-a499-394077ac5fba |
Local observation history
What this site observed; not complete provider history.
- — Added