Space Weather Events
Coronal mass ejection — 2026-10-16 12:38 UTC
CME visible faintly to the NE in STEREO A COR2. The CME is not seen in SOHO LASCO C2/C3 or GOES CCOR-1 imagery. The potential source is an eruption starting around 2026-10-16T11:00Z, primarily centered around N05E10, although the eruption extends as far east as N05E30. The eruption may include a filament liftoff as seen in SDO AIA 304. Dimming, moving/opening field lines, and post-eruptive arcades are best seen in SDO AIA 193. The eruption is also seen near the NE limb from the point of view of STEREO A EUV 195 and 304 imagery. This CME may exhibit deflection due to its proximity to the coronal hole.
| Event type | Coronal mass ejection |
|---|---|
| Date | |
| Flare class | — |
| CME speed | 247 km/s |
| CME analyses | 1 |
| Linked events | 2026-10-20T11:23:00-IPS-001, 2026-10-22T20:20:00-RBE-001 |
| Instruments | STEREO A: SECCHI/COR2 |
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) | 2026-10-17T02:45Z | 247 | 29 | 31 / -15 | S | SWPC_CAT | Shock arrival 2026-10-20T18:00Z; Earth glancing blow: yes 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 | 16 Oct 2026, 13:24 EDT |
| Last observed here | 13 Nov 2026, 19:00 EST |
| In latest snapshot | Yes |
| Record identifier | 2268ba64-5c36-5b88-a9fa-6bfd2bdd0dc1 |
Local observation history
What this site observed; not complete provider history.
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