Space Weather Events
Coronal mass ejection — 2026-10-16 15:12 UTC
Bright CME seen to the NW in SOHO LASCO C2/C3 and to the NW in STEREO A COR2. Its source is likely a messy eruption seen in the NW quadrant in STEREO A EUV 195/304 and centered very approximately around N12W140 near former Active Region 14549 starting 2026-10-16T14:25Z. Coronal signatures include dimming, post-eruptive arcades and ejecta seen in STEREO A EUV 195/304, as well as opening/moving of field lines behind the NW limb in SDO AIA 193/171.
| Event type | Coronal mass ejection |
|---|---|
| Date | |
| Flare class | — |
| CME speed | 270 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) | 2026-10-17T04:17Z | 270 | 30 | 19 / 145 | 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 | 16 Oct 2026, 17:54 EDT |
| Last observed here | 13 Nov 2026, 19:00 EST |
| In latest snapshot | Yes |
| Record identifier | f9dc84fb-b1e2-5333-93d9-2c6700f46c20 |
Local observation history
What this site observed; not complete provider history.
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