Space Weather Events
Last checked 60 minutes ago.
Research information from NASA DONKI, not an operational space weather warning service.
Showing 41–60 of 116 records
| Name↕, sortable; sort Name, A to Z | Event type↕, sortable; sort Event type, A to Z | Date↕, sortable; sort Date, earliest first | Flare class↕, sortable; sort Flare class, A to Z | CME speed↕, sortable; sort CME speed (most accurate analysis), lowest first | CME analyses↕, sortable; sort CME analyses, lowest first | Linked events↕, sortable; sort Linked events, A to Z | Instruments▼, sorted descending; sort Instruments, A to Z | Summary↕, sortable; sort Summary, A to Z |
|---|---|---|---|---|---|---|---|---|
| Coronal mass ejection — 2026-09-20 03:00 UTC | Coronal mass ejection | — | 273 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, GOES: CCOR-1 | Faint CME observed to the NE in SOHO LASCO C2/C3 and GOES CCOR-1, better seen the further into the field-of-view it travels than early C2. No definitive EUV source is observed, and may be far-sided or outflow following prior CME: 2026-09-19T18:48Z. | |
| Coronal mass ejection — 2026-09-20 05:12 UTC | Coronal mass ejection | — | 593 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, GOES: CCOR-1 | Faint CME observed to the NW in SOHO LASCO C2/C3 and GOES CCOR-1, not observed in STEREO A COR2. No distinct source is observed for this CME, but could be related to field line movement over the NW limb starting as early as ~2026-09-20T01:48Z in SDO AIA 171. | |
| Coronal mass ejection — 2026-09-20 20:12 UTC | Coronal mass ejection | — | 277 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3 | Faint CME observed to the NW in SOHO LASCO C2/C3. The CME is not visible in STEREO A COR2 (may be too faint) or GOES CCOR-1 (likely pylon obscured). No distinct EUV source is observed for this CME. | |
| Coronal mass ejection — 2026-09-25 15:12 UTC | Coronal mass ejection | — | 524 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, GOES: CCOR-1 | Faint loop front in the wake of 2026-09-25T11:09Z CME, overlapping with outflow from this earlier far-sided CME. The front is faintly seen in SOHO LASCO C2/C3 and GOES CCOR-1 to the NE. There is a super faint, possibly corresponding front even more faintly seen in STEREO A COR2 white light imagery to the NW but it is practically not seen in running difference imagery and seems much wider than the front seen in LASCO and CCOR-1. No source has been found in available EUV imagery for this event, so it is likely far sided. | |
| Coronal mass ejection — 2026-09-25 23:00 UTC | Coronal mass ejection | — | 472 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, GOES: CCOR-1 | CME first seen to the NE by SOHO LASCO C2 beginning at 2026-09-25T23:00Z, as well as by SOHO LASCO C3, and GOES CCOR-1. This CME is either too faint or is obscured by the occulting disk in STEREO A COR2. The source of this event is field line opening seen along the NE limb in GOES SUVI 284 beginning at approx. 2026-09-25T22:00Z. | |
| Coronal mass ejection — 2026-09-26 00:48 UTC | Coronal mass ejection | — | 478 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, STEREO A: SECCHI/COR2, GOES: CCOR-1 | Faint CME first seen to the NE by SOHO LASCO C2 beginning at 2026-09-26T00:48Z, as well as by SOHO LASCO C3, STEREO A COR2 and GOES CCOR-1. There is no clear source for this event as it is likely far sided. | |
| Coronal mass ejection — 2026-09-26 02:24 UTC | Coronal mass ejection | — | 417 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, STEREO A: SECCHI/COR2 | Faint CME first seen to the NE by SOHO LASCO C2 beginning at 2026-09-26T02:24Z, as well as by SOHO LASCO C3 and STEREO A COR2 in later frames. This CME is obscured by Earthshine in GOES CCOR-1. There is no clear source seen for this event as it is likely far sided. | |
| Coronal mass ejection — 2026-09-26 15:24 UTC | Coronal mass ejection | — | 449 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, GOES: CCOR-1 | Faint minor CME with a pointy front seen to the NE in SOHO LASCO C2/C3 and GOES CCOR-1 but not seen in STEREO A COR2 coronagraph. | |
| Coronal mass ejection — 2026-09-26 19:36 UTC | Coronal mass ejection | — | 427 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, STEREO A: SECCHI/COR2, GOES: CCOR-1 | Bright lightbulb-shaped CME seen to the SW in SOHO LASCO C2/C3, GOES CCOR-1 and STEREO A COR2. Its source is a large prominence seen lifting from behind the SW limb starting at 2026-09-26T18:28Z (best seen in GOES SUVI 304), with source location seen on disk, close to the SW limb in STEREO A EUV 304/195 imagery. In EUV A 195 imagery we see an ejecta, as well as dimming and bright post-eruptive arcades. The erupting filament is also seen in AIA 171 and faintly in AIA 304, and ejecta and opening of field lines are seen off/close behind the SW limb in GOES SUVI 286. The erupting filament stretches very approximately from ~S25W15 (mostly dimming) to ~S20W80 (ejecta and post-eruptive arcades), as seen from STEREO A perspective, so the filament can be estimated as centered very approximately at ~S20W135 from the SDO perspective. | |
| Coronal mass ejection — 2026-09-27 06:36 UTC | Coronal mass ejection | — | 399 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, STEREO A: SECCHI/COR2, GOES: CCOR-1 | CME first seen to the West by SOHO LASCO C2 beginning at 2026-09-27T06:36Z, as well as by SOHO LASCO C3, STEREO A COR2 and GOES CCOR-1 in later frames. The source of this event is a small eruption from the vicinity of AR 14534 (N10W95) beginning at approx. 2026-09-27T04:30Z in STEREO A EUVI 195. This CME is likely deflected to the West by a large coronal hole in the vicinity of the eruption. | |
| Coronal mass ejection — 2026-09-27 07:00 UTC | Coronal mass ejection | — | 606 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, STEREO A: SECCHI/COR2, GOES: CCOR-1 | CME first seen to the SW by SOHO LASCO C2 beginning at 2026-09-27T07:00Z as well as by SOHO LASCO C3, STEREO A COR2 and GOES CCOR-1 in later frames. The source of this event is minor field line movement and brightening seen located at approx. S30W100-120 beginning at 2026-09-27T06:00Z as seen in STEREO A EUVI 195. | |
| Coronal mass ejection — 2026-09-27 09:48 UTC | Coronal mass ejection | — | 352 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, STEREO A: SECCHI/COR2, GOES: CCOR-1 | Narrow CME first seen to the NNE by SOHO LASCO C2 beginning at 2026-09-27T09:48Z, as well as by SOHO LASCO C3, GOES CCOR-1 and to the North by STEREO A COR2. There is no clear source seen for this event as it is likely far sided. | |
| Coronal mass ejection — 2026-09-27 14:48 UTC | Coronal mass ejection | — | 283 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, GOES: CCOR-1 | Narrow, faint CME first seen to the NE by SOHO LASCO C2 beginning at 2026-09-27T14:48Z, as well as by SOHO LASCO C3 and GOES CCOR-1 in later frames. This CME is not clearly seen in STEREO A COR2 imagery. There is no clear source seen for this event as it is likely far sided, but some faint field line movement can be seen beyond the NE limb in SDO AIA 171 beginning at approx. 2026-09-27T13:45Z. | |
| Coronal mass ejection — 2026-09-27 17:36 UTC | Coronal mass ejection | — | 403 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, STEREO A: SECCHI/COR2 | Faint CME observed to the NE in SOHO LASCO C2/C3 and GOES CCOR-1, not observed in STEREO A COR2. The source may be far-sided, observed as slow field line movement over the NE limb in SDO AIA 171 starting around 2026-09-27T15:48Z. | |
| Coronal mass ejection — 2026-09-27 21:00 UTC | Coronal mass ejection | — | 362 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, GOES: CCOR-1 | Faint CME observed to the NE in SOHO LASCO C2/C3 and GOES CCOR-1, not observed in STEREO A COR2. The source may be on/just beyond the SW limb observed in SDO AIA 171, with two close candidates of field line movement around 2026-09-28T19:51Z and/or 2026-09-27T20:25Z a few degrees to the north. | |
| Coronal mass ejection — 2026-09-28 01:26 UTC | Coronal mass ejection | — | 435 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, STEREO A: SECCHI/COR2, GOES: CCOR-1 | Narrow CME first seen to the SW by SOHO LASCO C2 beginning at 2026-09-28T01:26Z as well as by SOHO LASCO C3, STEREO A COR2 and GOES CCOR-1 in later frames. The source of this event is an eruption seen along the SW limb in STEREO A EUVI 304 beginning at approx. 2026-09-28T01:00Z. | |
| Coronal mass ejection — 2026-09-28 04:12 UTC | Coronal mass ejection | — | 403 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, STEREO A: SECCHI/COR2, GOES: CCOR-1 | Faint CME first seen to the SW by SOHO LASCO C2 beginning at 2026-09-28T04:12Z, as well as by SOHO LASCO C3, STEREO A COR2 and GOES CCOR-1 in later frames. There is no clear source seen for this event. | |
| Coronal mass ejection — 2026-09-28 04:24 UTC | Coronal mass ejection | — | 430 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, STEREO A: SECCHI/COR2, GOES: CCOR-1 | Narrow CME first seen to the SW by SOHO LASCO C2 beginning at 2026-09-28T04:24Z, as well as by SOHO LASCO C3, STEREO A COR2 and GOES CCOR-1 in later frames. The source of this event is faint field line opening seen along the SW limb (approx. W140) in STEREO A EUVI 195 beginning at approx. 2026-09-28T03:35Z. | |
| Coronal mass ejection — 2026-09-28 14:36 UTC | Coronal mass ejection | — | 501 km/s | 2 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, STEREO A: SECCHI/COR2, GOES: CCOR-1 | Bright loop CME first seen to the West by SOHO LASCO C2 beginning at 2026-09-28T14:36Z, as well as by SOHO LASCO C3 and GOES CCOR-1, as well as to the East in STEREO A COR2 in later frames. The source of this event is a very large filament eruption seen stretching from approx. S10W50 to N45W50 (centered at approx. N27W50) with liftoff beginning at approx. 2026-09-28T13:51Z as seen in SDO AIA, STEREO A EUVI and GOES SUVI 304. Post eruptive arcades, dimming and wide field line opening can be seen in SDO AIA 171/193/211, GOES SUVI 284 and STEREO A EUVI 195. | |
| Coronal mass ejection — 2026-09-28 16:18 UTC | Coronal mass ejection | — | 581 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, GOES: CCOR-1 | Faint CME seen to the SE by SOHO LASCO C2 beginning at 2026-09-28T16:18Z, as well as by SOHO LASCO C3 and GOES CCOR-1 in later frames. This CME is not clearly seen in STEREO A COR2 as it is likely obscured by the pylon. The source of this CME is faint field line opening seen originating from beyond the SW limb in SDO AIA 171 beginning at approx. 2026-09-28T15:45Z. |
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- NASA DONKI — Space Weather Events: DONKI events in the look-back window (30 days by default), re-read every hour; older entries remain from earlier refreshes or an optional backfill.
NASA DONKI — Space Weather Events
Source: Data: NASA Community Coordinated Modeling Center (CCMC), DONKI; analyses by the Moon to Mars Space Weather Analysis Office. Last successful refresh: 14 Oct 2026, 16:02 EDT.
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