Space Weather Events
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Research information from NASA DONKI, not an operational space weather warning service.
Showing 21–40 of 130 records
Coronal mass ejection — 2026-10-09 08:00 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 270 km/s
- CME analyses
- 1
- Instruments
- GOES: CCOR-1
CME visible to the NNW in GOES CCOR-1 imagery. There is no SOHO LASCO C2/C3 or STEREO A COR2 data available during this time, with a data gap in SOHO imagery starting at 2026-10-09T00:48Z and no STEREO A COR2 data…
View on DONKI for Coronal mass ejection — 2026-10-09 08:00 UTC (opens in a new tab)Coronal mass ejection — 2026-10-10 16:15 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 1553 km/s
- CME analyses
- 2
- Linked events
- 2026-10-10T14:58:00-FLR-001, 2026-10-13T00:21:00-IPS-001, 2026-10-16T13:20:00-RBE-001
- Instruments
- GOES: CCOR-1, SOHO: LASCO/C2, SOHO: LASCO/C3
CME observed to the NW in SOHO LASCO C2/C3 and GOES CCOR-1, with a full halo shock. Not yet observed in STEREO A COR2 white light imagery. The source is AR 14549, associated with an M6.4 flare peaking at…
View on DONKI for Coronal mass ejection — 2026-10-10 16:15 UTC (opens in a new tab)Coronal mass ejection — 2026-10-11 23:15 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 457 km/s
- CME analyses
- 1
- Instruments
- GOES: CCOR-1, SOHO: LASCO/C2, SOHO: LASCO/C3
This CME is visible to the southwest in GOES CCOR-1 and SOHO LASCO C2/C3 imagery. This event is not seen in STEREO A COR2 in real-time due to a data gap starting at 2026-10-11T17:38Z. The source may be related to…
View on DONKI for Coronal mass ejection — 2026-10-11 23:15 UTC (opens in a new tab)Coronal mass ejection — 2026-09-14 17:24 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 461 km/s
- CME analyses
- 1
- Instruments
- SOHO: LASCO/C2, SOHO: LASCO/C3, GOES: CCOR-1
CME observed to the NW in SOHO LASCO C2/C3 and GOES CCOR-1, likely not observed in STEREO A COR2 either due to faintness or a data gap starting at 2026-09-14T18:53Z before it becomes visible. The source is far-sided…
View on DONKI for Coronal mass ejection — 2026-09-14 17:24 UTC (opens in a new tab)Coronal mass ejection — 2026-09-15 08:36 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 395 km/s
- CME analyses
- 1
- Instruments
- SOHO: LASCO/C2
Very faint CME with an unclear front seen to the NE in early images of SOHO LASCO C2 only. It is not seen in SOHO LASCO C3, STEREO A COR2 and GOES CCOR-1, likely because of its faintness. No source for this feature has…
View on DONKI for Coronal mass ejection — 2026-09-15 08:36 UTC (opens in a new tab)Coronal mass ejection — 2026-09-18 03:24 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 371 km/s
- CME analyses
- 1
- Instruments
- SOHO: LASCO/C2, SOHO: LASCO/C3, GOES: CCOR-1
CME visible to the NE in SOHO LASCO C2/C3. The CME is also faintly visible to the NE in GOES CCOR-1 following a data gap due to Earthshine from 2026-09-18T03:45Z to 2026-09-18T06:10Z. The CME is not visible in STEREO A…
View on DONKI for Coronal mass ejection — 2026-09-18 03:24 UTC (opens in a new tab)Coronal mass ejection — 2026-09-19 16:38 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 729 km/s
- CME analyses
- 1
- Instruments
- SOHO: LASCO/C2, STEREO A: SECCHI/COR2, GOES: CCOR-1
Faint, narrow CME seen to the SW in SOHO LASCO C2 and STEREO A COR2 and very faintly seen in a couple of frames of GOES CCOR-1 coronagraph imagery. The CME is not seen in SOHO LASCO C3. Its source is likely seen in…
View on DONKI for Coronal mass ejection — 2026-09-19 16:38 UTC (opens in a new tab)Coronal mass ejection — 2026-09-19 18:48 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 321 km/s
- CME analyses
- 1
- Linked events
- 2026-09-19T17:57:00-FLR-001
- Instruments
- SOHO: LASCO/C2
Faint, minor CME with an unclear front seen to the E-NE in SOHO LASCO C2. Not seen in other coronagraphs. Its source is the long duration C3.3 class flare from unnumbered AR rotating onto disk (N14E90) peaking at…
View on DONKI for Coronal mass ejection — 2026-09-19 18:48 UTC (opens in a new tab)Coronal mass ejection — 2026-09-19 22:12 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 331 km/s
- CME analyses
- 1
- Instruments
- SOHO: LASCO/C2, SOHO: LASCO/C3, STEREO A: SECCHI/COR2, GOES: CCOR-1
CME observed to the NW in SOHO LASCO C2/C3, GOES CCOR-1, and STEREO A COR2. The source is a far-sided filament eruption over the NW limb, observed best in GOES 284/304 starting around 2026-09-19T21:22Z. When STEREO A…
View on DONKI for Coronal mass ejection — 2026-09-19 22:12 UTC (opens in a new tab)Coronal mass ejection — 2026-09-19 22:24 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 341 km/s
- CME analyses
- 1
- Instruments
- SOHO: LASCO/C2, SOHO: LASCO/C3, STEREO A: SECCHI/COR2, GOES: CCOR-1
CME observed brightly to the SW in STEREO A COR2, and very faintly to the SE in SOHO LASCO C2/C3 and GOES CCOR-1. No source is seen in on-disk EUV imagery for this event, and is likely far-sided.
View on DONKI for Coronal mass ejection — 2026-09-19 22:24 UTC (opens in a new tab)Coronal mass ejection — 2026-09-20 03:00 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 273 km/s
- CME analyses
- 1
- Instruments
- 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…
View on DONKI for Coronal mass ejection — 2026-09-20 03:00 UTC (opens in a new tab)Coronal mass ejection — 2026-09-20 05:12 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 593 km/s
- CME analyses
- 1
- Instruments
- 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…
View on DONKI for Coronal mass ejection — 2026-09-20 05:12 UTC (opens in a new tab)Coronal mass ejection — 2026-09-20 20:12 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 277 km/s
- CME analyses
- 1
- Instruments
- 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.
View on DONKI for Coronal mass ejection — 2026-09-20 20:12 UTC (opens in a new tab)Coronal mass ejection — 2026-09-25 15:12 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 524 km/s
- CME analyses
- 1
- Instruments
- 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…
View on DONKI for Coronal mass ejection — 2026-09-25 15:12 UTC (opens in a new tab)Coronal mass ejection — 2026-09-25 23:00 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 472 km/s
- CME analyses
- 1
- Instruments
- 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…
View on DONKI for Coronal mass ejection — 2026-09-25 23:00 UTC (opens in a new tab)Coronal mass ejection — 2026-09-26 00:48 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 478 km/s
- CME analyses
- 1
- Instruments
- 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.
View on DONKI for Coronal mass ejection — 2026-09-26 00:48 UTC (opens in a new tab)Coronal mass ejection — 2026-09-26 02:24 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 417 km/s
- CME analyses
- 1
- Instruments
- 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…
View on DONKI for Coronal mass ejection — 2026-09-26 02:24 UTC (opens in a new tab)Coronal mass ejection — 2026-09-26 15:24 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 449 km/s
- CME analyses
- 1
- Instruments
- 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.
View on DONKI for Coronal mass ejection — 2026-09-26 15:24 UTC (opens in a new tab)Coronal mass ejection — 2026-09-26 19:36 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 427 km/s
- CME analyses
- 1
- Instruments
- 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…
View on DONKI for Coronal mass ejection — 2026-09-26 19:36 UTC (opens in a new tab)Coronal mass ejection — 2026-09-27 06:36 UTC
- Event type
- Coronal mass ejection
- Date
- CME speed
- 399 km/s
- CME analyses
- 1
- Instruments
- 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…
View on DONKI for Coronal mass ejection — 2026-09-27 06:36 UTC (opens in a new tab)
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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: 17 Oct 2026, 05:32 EDT.
- DONKI information is supplied for research and analysis. It is not an operational emergency-warning service: NOAA's Space Weather Prediction Center (swpc.noaa.gov) is the official US source of space weather forecasts and warnings.
- Observations, analyses (a CME can have several, with the one DONKI marks most accurate), model predictions (WSA-ENLIL) and notifications are shown as such, in their original units and classifications. No combined severity score is computed.
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