Space Weather Events
Coronal mass ejection — 2026-09-14 11:08 UTC
CME first seen to the E in STEREO A COR2 starting at 2026-09-14T11:08Z. It is also seen to the W in GOES CCOR-1. This CME is covered by a data gap in SOHO LASCO C2/C3 in real time. The source of this CME is an eruption centered around AR 14528 (S11W38) best seen in GOES SUVI 284 beginning around 2026-09-14T10:00Z. Field line movement can be seen accompanied by brightening and ejecta. Post-eruptive arcades can also be seen in SDO AIA 193. There seems to be a northwestward deflection from the location of the source. There are two large coronal holes (a northern and a southern one) nearby, possibly responsible for this deflection.
| Event type | Coronal mass ejection |
|---|---|
| Date | |
| Flare class | — |
| CME speed | 897 km/s |
| CME analyses | 2 |
| Linked events | 2026-09-17T01:24:00-IPS-001, 2026-09-17T15:10:00-IPS-001 |
| Instruments | 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) | 2026-09-14T15:34Z | 744 | 24 | 3 / 40 | C | SWPC_CAT | Shock arrival 2026-09-17T09:30Z; Earth glancing blow: yes run (opens in a new tab) |
| #2 (opens in a new tab) Most accurate (DONKI) | 2026-09-14T14:28Z | 897 | 22 | 6 / 39 | C | SWPC_CAT | Shock arrival 2026-09-17T06:00Z; 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.
Notifications sent
- 20260914-AL-002 (opens in a new tab) 2026-09-14T16:02Z
Provenance
| Source | NASA DONKI — Space Weather Events |
|---|---|
| Feed | DONKI CME |
| Provider data as of | not stated |
| First observed here | 12 Oct 2026, 20:02 EDT |
| Last observed here | 12 Oct 2026, 22:18 EDT |
| In latest snapshot | Yes |
| Record identifier | 6aacf98d-6e79-52e1-8252-3c4257b15859 |
Local observation history
What this site observed; not complete provider history.
- — Added