Space Weather Events
Coronal mass ejection — 2026-10-28 00:00 UTC
Faint CME observed to the NE in SOHO LASCO C2/C3, GOES CCOR-1, and STEREO A COR2. The source may be field line movement on/near the high latitude N limb around 2026-10-27T22:31Z in SDO AIA 171, or far-sided and unobserved.
| Event type | Coronal mass ejection |
|---|---|
| Date | |
| Flare class | — |
| CME speed | 399 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) | 2026-10-28T09:12Z | 399 | 15 | 40 / -78 | S | SWPC_CAT | — |
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 | 28 Oct 2026, 20:01 EDT |
| Last observed here | 12 Nov 2026, 19:01 EST |
| In latest snapshot | Yes |
| Record identifier | 46f5365e-0cf5-5133-aa66-60a47e5de3a3 |
Local observation history
What this site observed; not complete provider history.
- — Added