Space Weather Events
Coronal mass ejection — 2026-10-18 21:30 UTC
Faint CME first seen to the NW by GOES CCOR-1 beginning at 2026-10-18T21:30Z. 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 a small region of dimming and field line opening seen in the vicinity of N10W30, extending Northward, in SDO AIA 193 beginning at approx. 2026-10-18T19:00Z.
| Event type | Coronal mass ejection |
|---|---|
| Date | |
| Flare class | — |
| CME speed | 375 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) | 2026-10-19T04:12Z | 375 | 10 | 17 / 30 | 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 | 18 Oct 2026, 21:16 EDT |
| Last observed here | 13 Nov 2026, 19:00 EST |
| In latest snapshot | Yes |
| Record identifier | 5e126a79-b5e8-533e-942b-748843fe2e92 |
Local observation history
What this site observed; not complete provider history.
- — Changed
- — Added