Space Weather Events
Last checked 50 minutes ago.
Research information from NASA DONKI, not an operational space weather warning service.
Showing 21–40 of 115 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▼, sorted descending; 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 — 2026-09-20 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 12:23 UTC | Coronal mass ejection | — | 427 km/s | 1 | — | STEREO A: SECCHI/COR2 | Faint CME observed to the W only in STEREO A COR2. No distinct source is observed in available EUV imagery. | |
| 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 — 2026-09-20 22:38 UTC | Coronal mass ejection | — | 318 km/s | 1 | — | STEREO A: SECCHI/COR2, SOHO: LASCO/C2, SOHO: LASCO/C3 | Faint CME observed to the NW in STEREO A COR2 and SOHO LASCO C2/C3, not in GOES CCOR-1 as it is likely obscured by the pylon. The only potential source is a slow brightening on the NW disk of STEREO A EUVI 195 starting around 2026-09-20T18:55Z. | |
| Coronal mass ejection — 2026-09-21 09:09 UTC | Coronal mass ejection | — | 347 km/s | 1 | — | STEREO A: SECCHI/COR2, SOHO: LASCO/C2, SOHO: LASCO/C3, GOES: CCOR-1 | Faint CME observed to the NW in STEREO A COR2 and SOHO LASCO C2/C3, largely blocked by the pylon in GOES CCOR-1. The source is unclear, with a potential far-sided source on the STEREO A EUVI 195/304 west limb observed as brightening and field line movement starting around 2026-09-21T09:05Z, very close to the CME start time however. There are two additional field line movements near the NW limb in SDO AIA 171 starting around 2026-09-21T03:03Z and 2026-09-21T05:54Z, however these eruptions may be too early to be associated with this CME. Triangulation of the leading edge suggests the CME is far-sided. | |
| Coronal mass ejection — 2026-09-24 02:53 UTC | Coronal mass ejection | — | 500 km/s | 1 | — | STEREO A: SECCHI/COR2 | CME observed to the E only in STEREO A COR2, likely not seen in other coronagraphs due to the occulting disk and/or faint leading edge. The start time of 2026-09-24T02:53Z in white light is later than the first observation at 2026-09-24T01:38Z in running difference imagery due to the bright streamer overlap. The source may be an eruption from AR 14536 centered around N03W32, observed as slow dimming, brightening, and field line movement in SDO AIA 171/193 starting around 2026-09-23T21:06Z. In STEREO A COR2, there is a faint leading edge observed already far in the east field-of-view after a data gap ends at 2026-09-24T01:23Z that better corresponds to this eruption time, but is also plausible to be a candidate source for this CME. | |
| Coronal mass ejection — 2026-09-24 09:23 UTC | Coronal mass ejection | — | 618 km/s | 1 | — | STEREO A: SECCHI/COR2 | Faint CME observed to the SW only in STEREO A COR2, may be due to faintness or the occulting disk in other coronagraphs. No EUV source is observed for this front. | |
| Coronal mass ejection — 2026-09-24 14:45 UTC | Coronal mass ejection | — | 493 km/s | 1 | — | GOES: CCOR-1, STEREO A: SECCHI/COR2 | CME observed to the SW in GOES CCOR-1 and S in STEREO A COR2, overlapping with a slow, wide streamer blowout beginning ~2026-09-23T20:12Z (itself measuring ~176 km/s). Not observed in SOHO LASCO C2/C3 due to a real-time data gap. The source is field line movement and small shifting of a coronal hole boundary best observed only in GOES SUVI 284 starting ~2026-09-24T14:02Z, tracing on-disk around S35W70 in proximity to a large southern coronal hole. | |
| Coronal mass ejection — 2026-09-25 11:09 UTC | Coronal mass ejection | — | 797 km/s | 3 | — | STEREO A: SECCHI/COR2, SOHO: LASCO/C2, SOHO: LASCO/C3, GOES: CCOR-1 | CME visible to the NE in SOHO LASCO C2/C3 and GOES CCOR-1. The CME is also visible to the NW in STEREO A COR2. The source is farsided, and is best seen as rapidly opening field lines beyond the west limb in STEREO A EUV 195 imagery starting at 2026-09-25T10:25Z. Moving field lines are also visible beyond the east limb in SDO AIA 171 in ISWA. | |
| Coronal mass ejection — 2026-09-25 11:23 UTC | Coronal mass ejection | — | 745 km/s | 1 | — | STEREO A: SECCHI/COR2 | Narrow CME with a pointy front seen in STEREO A COR2 only. This CME partially overlaps in coronagraphs with the far-sided 2026-09-25T11:09Z CME and its shock. The only potential candidate source is a filament liftoff faintly seen to the south in STEREO A EUV 195 imagery starting 2026-09-25T11Z as a faint dimming and faint post-eruptive arcades centered ~S40W80 or W90. Not really seen in GOES SUVI 304 or STEREO A 304 imagery. | |
| 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 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. |
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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: 13 Oct 2026, 17:26 EDT.
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