Space Weather Events
Coronal mass ejection — 2026-10-18 23:15 UTC
CME first seen to the West by GOES CCOR-1 beginning at 2026-10-18T23:15Z. This CME is not visible in SOHO LASCO C2/C3 or STEREO A COR2 in real time due to data gaps beginning at 2026-10-18T19:12Z and 2026-10-18T20:38Z respectively. The source of this event is field line opening seen on/beyond the West limb in GOES SUVI 284 beginning at approx. 2026-10-18T19:30Z.
| Event type | Coronal mass ejection |
|---|---|
| Date | |
| Flare class | — |
| CME speed | 590 km/s |
| CME analyses | 1 |
| Linked events | — |
| Instruments | 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) | 2026-10-19T04:33Z | 590 | 20 | 5 / — | C | 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 | 18 Oct 2026, 22:16 EDT |
| Last observed here | 14 Nov 2026, 19:03 EST |
| In latest snapshot | Yes |
| Record identifier | 751b3f16-75ee-5b91-b6b9-1ee68a272dd6 |
Local observation history
What this site observed; not complete provider history.
- — Added