Space Weather Events
Last checked 68 minutes ago.
Research information from NASA DONKI, not an operational space weather warning service.
Showing 81–100 of 122 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↕, sortable; sort Instruments, A to Z | Summary↕, sortable; sort Summary, A to Z |
|---|---|---|---|---|---|---|---|---|
| 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 17:45 UTC | Coronal mass ejection | — | 462 km/s | 1 | — | GOES: CCOR-1, SOHO: LASCO/C3 | Faint CME that looks to consist of two loops moving together as one. It is seen faintly to the NE in GOES CCOR-1 and SOHO LASCO C3 difference imagery, moving in the footsteps of 2026-09-25T11:09Z CME. No coronal signatures have been found for this event, so it is likely far-sided. | |
| Coronal mass ejection — 2026-09-25 20:06 UTC | Coronal mass ejection | — | 254 km/s | 1 | — | SOHO: LASCO/C3, GOES: CCOR-1 | A minor, narrow CME seen to the E in GOES CCOR-1/SOHO LASCO C3. It is not seen in STEREO A COR2. No coronal signatures have been found for this CME in EUV imagery. | |
| Coronal mass ejection — 2026-09-25 20:45 UTC | Coronal mass ejection | — | 460 km/s | 1 | — | GOES: CCOR-1, SOHO: LASCO/C3 | A narrow CME seen to the NE in GOES CCOR-1/SOHO LASCO C3 with a pointed front. It is not seen in STEREO A COR2 and SOHO LASCO C2 currently because of a data gap. No coronal signatures have been found for this CME in EUV imagery, except for possibly some movement of field lines to the NE seen in GOES SUVI 284. | |
| 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 20:00 UTC | Coronal mass ejection | — | 336 km/s | 1 | — | GOES: CCOR-1, SOHO: LASCO/C3 | A minor faint CME seen to the NE in GOES CCOR-1 and SOHO LASCO C3, and not seen in STEREO A COR2 coronagraph. No source has been found in EUV imagery for this CME, so it is likely far-sided. | |
| 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 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. | |
| Coronal mass ejection — 2026-09-28 21:24 UTC | Coronal mass ejection | — | 386 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, STEREO A: SECCHI/COR2 | Faint CME observed to the NW in SOHO LASCO C2/C3 and GOES CCOR-1, not observed in STEREO A COR2. The source could be field line movement on/just beyond the NW limb, perhaps former AR 14536, in GOES SUVI 284 starting around 2026-09-28T21:46Z, but this field line movement starts just after the CME is first observed in LASCO C2. It may also be outflow following filament eruption CME: 2026-09-28T14:36Z. | |
| Coronal mass ejection — 2026-09-29 18:36 UTC | Coronal mass ejection | — | 511 km/s | 1 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, STEREO A: SECCHI/COR2 | Faint CME observed to the N in SOHO LASCO C2/C3 and GOES CCOR-1, not in STEREO A COR2. The source may be on/near the high latitude NE limb, with two instances of field line movement in SDO AIA 171 starting ~2026-09-29T15:54Z and further north ~2026-09-29T17:10Z; more likely the second candidate. | |
| Coronal mass ejection — 2026-10-01 02:36 UTC | Coronal mass ejection | — | 476 km/s | 2 | — | SOHO: LASCO/C2, SOHO: LASCO/C3, STEREO A: SECCHI/COR2, GOES: CCOR-1 | Faint CME observed to the NE in SOHO LASCO C2/C3, GOES CCOR-1. May be observed to the NE in STEREO A COR2, but difficult to reliably resolve in white light imagery. The source is likely far-sided, only observed as weak field line movement over the NE limb in SDO AIA 171 starting as early as 2026-10-01T00:25Z. |
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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
Data: NASA Community Coordinated Modeling Center (CCMC), DONKI; analyses by the Moon to Mars Space Weather Analysis Office. Last successful refresh: 16 Oct 2026, 08:52 EDT.
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