Space Weather Events
Coronal mass ejection — 2026-10-11 23:12 UTC
This CME is visible to the east in GOES CCOR-1 and SOHO LASCO C2/C3 imagery. This event is seen in STEREO A COR2, directed towards the east, after it has exceeded the field of view due to a data gap from 2026-10-11T17:38Z to 2026-10-12T01:53Z. The source is a filament eruption spanning S30E30 to S10E05 which begins to lift off around 2026-10-11T22:30Z as seen in SDO 131/171/193/304 and GOES SUVI 131/171/195/284/304 imagery. Dimming is visible in SDO AIA 193 and GOES SUVI 195 imagery, with post eruptive arcades visible starting around 2026-10-11T23:40Z.
| Event type | Coronal mass ejection |
|---|---|
| Date | |
| Peak (UTC) | — |
| End (UTC) | — |
| Flare class | — |
| Source location / observed at | S20E15 |
| CME speed (most accurate analysis) | 618 km/s |
| Kp index values (as observed) | — |
| 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) | 2026-10-12T04:03Z | 618 | 36 | -1 / -28 | C | SWPC_CAT | Shock arrival 2026-10-14T08:22Z; Earth glancing blow: no run (opens in a new tab) Shock arrival 2026-10-14T09:04Z; 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
- 20261012-AL-001 (opens in a new tab) 2026-10-12T13:57Z
- 20261012-AL-002 (opens in a new tab) 2026-10-12T17:56Z
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 | 12 Oct 2026, 22:18 EDT |
| In latest snapshot | Yes |
| Record identifier | 5ce3e14c-1138-56cd-b570-40acf4149ea4 |
Local observation history
What this site observed; not complete provider history.
- — Added