Space Weather Events
Last checked 58 minutes ago.
Research information from NASA DONKI, not an operational space weather warning service.
Showing 21–40 of 113 records
Coronal mass ejection — 2026-09-25 11:23 UTC
Type C (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- S40W80
- CME speed (most accurate analysis)
- 745 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-25 11:23 UTC (opens in a new tab)Coronal mass ejection — 2026-09-25 15:12 UTC
Type C (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 524 km/s
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 17:45 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 462 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-25 17:45 UTC (opens in a new tab)Coronal mass ejection — 2026-09-25 20:06 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 254 km/s
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.
View on DONKI for Coronal mass ejection — 2026-09-25 20:06 UTC (opens in a new tab)Coronal mass ejection — 2026-09-25 20:45 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 460 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-25 20:45 UTC (opens in a new tab)Coronal mass ejection — 2026-09-25 23:00 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 472 km/s
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
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 478 km/s
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
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 417 km/s
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
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 449 km/s
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
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- S20W135
- CME speed (most accurate analysis)
- 427 km/s
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 — 2026-09-26 20:00 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 336 km/s
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.
View on DONKI for Coronal mass ejection — 2026-09-26 20:00 UTC (opens in a new tab)Coronal mass ejection — 2026-09-27 06:36 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- N10W95
- CME speed (most accurate analysis)
- 399 km/s
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)Coronal mass ejection — 2026-09-27 07:00 UTC
Type C (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- S30W110
- CME speed (most accurate analysis)
- 606 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-27 07:00 UTC (opens in a new tab)Coronal mass ejection — 2026-09-27 09:48 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 352 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-27 09:48 UTC (opens in a new tab)Coronal mass ejection — 2026-09-27 14:48 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 283 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-27 14:48 UTC (opens in a new tab)Coronal mass ejection — 2026-09-27 17:36 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 403 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-27 17:36 UTC (opens in a new tab)Coronal mass ejection — 2026-09-27 21:00 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 362 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-27 21:00 UTC (opens in a new tab)Coronal mass ejection — 2026-09-28 01:26 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 435 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-28 01:26 UTC (opens in a new tab)Coronal mass ejection — 2026-09-28 04:12 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 403 km/s
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.
View on DONKI for Coronal mass ejection — 2026-09-28 04:12 UTC (opens in a new tab)Coronal mass ejection — 2026-09-28 04:24 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 430 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-28 04:24 UTC (opens in a new tab)
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Coverage of this source
- 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, 05:18 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.
- Times are UTC as supplied. DONKI revises entries; the look-back window is re-read on every refresh.