Space Weather Events
Coronal mass ejection — 2026-10-26 20:48 UTC
This CME is visible to the northeast in SOHO LASCO C2 and GOES CCOR-1 imagery. This event was also seen in SOHO LASCO C3 after a downlink data gap backfilled and was seen in STEREO A COR2 after a data gap from 2026-10-26T20:38Z to 2026-10-27T02:23Z. The source is a large filament eruption visible near the eastern limb which begins to lift off around 2026-10-26T20:00Z as seen in SDO AIA 171/193/304 and GOES SUVI 171/195/284/304 imagery. The filament may extend as far as longitude E50 to beyond the east limb. A subsequent opening of field lines is visible over the northeast limb in GOES SUVI 284 imagery.
| Event type | Coronal mass ejection |
|---|---|
| Date | |
| Flare class | — |
| CME speed | 479 km/s |
| CME analyses | 2 |
| 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) | 2026-10-27T10:20Z | 280 | 39 | 47 / — | S | Plane-of-sky | — |
| #2 (opens in a new tab) Most accurate (DONKI) | 2026-10-27T05:59Z | 479 | 35 | 38 / -54 | 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 | 27 Oct 2026, 20:00 EDT |
| Last observed here | 12 Nov 2026, 19:01 EST |
| In latest snapshot | Yes |
| Record identifier | b564e48c-797d-5370-8f74-12c5355be02a |
Local observation history
What this site observed; not complete provider history.
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