Space Weather Events
Coronal mass ejection — 2026-10-25 03:12 UTC
CME observed to the NE in SOHO LASCO C2/C3 and GOES CCOR-1, and faintly to the N in STEREO A COR2. The source is wide field line movement over the E limb starting around 2026-10-25T02:09Z in SDO AIA 171/193/304 and GOES SUVI 171/195/284/304; the prominence on the limb jostles in SDO AIA 304/GOES SUVI 304 but does not cleanly erupt. Preceeded by and overtakes a faint leading edge starting at 2026-10-25T01:48Z measuring ~173 km/s, from field line movement over the NE limb ~2026-10-25T00:58Z in GOES SUVI 284 prior to the main eruption. Followed by and overlaps with a streamer blowout starting around 2026-10-25T05:00Z.
| Event type | Coronal mass ejection |
|---|---|
| Date | |
| Flare class | — |
| CME speed | 336 km/s |
| CME analyses | 1 |
| Linked events | — |
| 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) | 2026-10-25T13:59Z | 336 | 41 | 44 / -99 | 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 | 25 Oct 2026, 20:01 EDT |
| Last observed here | 13 Nov 2026, 19:00 EST |
| In latest snapshot | Yes |
| Record identifier | c8ac69b6-4217-5a52-91a0-55ee6ec8baf1 |
Local observation history
What this site observed; not complete provider history.
- — Added