Space Weather Events
Last checked 46 minutes ago.
Research information from NASA DONKI, not an operational space weather warning service.
Showing 41–60 of 113 records
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)Coronal mass ejection — 2026-09-28 14:36 UTC
Type C (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- N27W50
- CME speed (most accurate analysis)
- 501 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-28 14:36 UTC (opens in a new tab)Coronal mass ejection — 2026-09-28 16:18 UTC
Type C (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 581 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-28 16:18 UTC (opens in a new tab)Coronal mass ejection — 2026-09-28 21:24 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 386 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-28 21:24 UTC (opens in a new tab)Coronal mass ejection — 2026-09-29 04:12 UTC
Type C (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- S05E90
- CME speed (most accurate analysis)
- 655 km/s
This CME is visible to the east in SOHO LASCO C2/C3 and GOES CCOR-1 imagery for a few early frames before becoming too diffuse to observe. This event is not visible in STEREO A COR2 imagery. The source is likely related…
View on DONKI for Coronal mass ejection — 2026-09-29 04:12 UTC (opens in a new tab)Coronal mass ejection — 2026-09-29 07:12 UTC
Type C (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- S09W90
- CME speed (most accurate analysis)
- 958 km/s
This CME is visible to the east in SOHO LASCO C2/C3 and GOES CCOR-1 imagery for a few early frames before becoming too diffuse to observe. This event is not visible in STEREO A COR2 imagery. The source is likely related…
View on DONKI for Coronal mass ejection — 2026-09-29 07:12 UTC (opens in a new tab)Coronal mass ejection — 2026-09-29 18:36 UTC
Type C (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 511 km/s
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…
View on DONKI for Coronal mass ejection — 2026-09-29 18:36 UTC (opens in a new tab)Coronal mass ejection — 2026-09-30 03:12 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- N11W48
- CME speed (most accurate analysis)
- 488 km/s
CME first seen to the West by SOHO LASCO C2 beginning at 2026-09-30T03:12Z, as well as by SOHO LASCO C3, STEREO A COR2 and GOES CCOR-1. The source of this event is a C8.6 flare from Active Region 14535 (N11W48) seen…
View on DONKI for Coronal mass ejection — 2026-09-30 03:12 UTC (opens in a new tab)Coronal mass ejection — 2026-09-30 11:36 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- S08W112
- CME speed (most accurate analysis)
- 365 km/s
Faint CME first seen to the West by SOHO LASCO C2 beginning at 2026-09-30T11:36Z, as well as by SOHO LASCO C3 and GOES CCOR-1 in later frames. This event is not clearly seen in STEREO A COR2 as it is likely obscured by…
View on DONKI for Coronal mass ejection — 2026-09-30 11:36 UTC (opens in a new tab)Coronal mass ejection — 2026-10-01 02:36 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 476 km/s
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…
View on DONKI for Coronal mass ejection — 2026-10-01 02:36 UTC (opens in a new tab)Coronal mass ejection — 2026-10-01 03:12 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- N12W120
- CME speed (most accurate analysis)
- 432 km/s
Faint CME observed to the NW in SOHO LASCO C2/C3, GOES CCOR-1, and STEREO A COR2. The source is far-sided, approximately ~N12W120, as observed in STEREO A EUVI 195/304 as brightening starting around 2026-10-01T02:35Z…
View on DONKI for Coronal mass ejection — 2026-10-01 03:12 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, 06:19 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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