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 — 2026-09-28 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)Coronal mass ejection — 2026-10-02 00:53 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- N30W60
- CME speed (most accurate analysis)
- 255 km/s
CME faintly visible to the NE in STEREO A COR2 and the NW in SOHO LASCO C2/C3 and GOES CCOR-1. The source is likely a gradual eruption with moving field lines best seen in SDO AIA 193 starting around 2026-10-01T17:43Z…
View on DONKI for Coronal mass ejection — 2026-10-02 00:53 UTC (opens in a new tab)Coronal mass ejection — 2026-10-02 06:48 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- N45E05
- CME speed (most accurate analysis)
- 356 km/s
Faint CME seen to the NNE in GOES CCOR-1 and SOHO LASCO C2/C3. The CME is also possibly faintly visible in STEREO A COR2 imagery to the NE. The potential source may be a filament liftoff faintly seen in SDO AIA 304…
View on DONKI for Coronal mass ejection — 2026-10-02 06:48 UTC (opens in a new tab)Coronal mass ejection — 2026-10-02 08:24 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- N11W75
- CME speed (most accurate analysis)
- 270 km/s
CME visible to the NW in SOHO LASCO C2/C3 and GOES CCOR-1. The CME overlaps in the field of view with the CME first seen in STEREO A COR2 at 2026-10-02T00:53Z. The CME may potentially be faintly seen to the NNE in…
View on DONKI for Coronal mass ejection — 2026-10-02 08:24 UTC (opens in a new tab)Coronal mass ejection — 2026-10-02 17:36 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 317 km/s
Very faint CME/outflow with a messy, unclear front seen to the NW in SOHO LASCO C2/C3 and GOES CCOR-1 but covered by an extensive data gap in STEREO A COR2. No source was found in EUV imagery for this outflow.
View on DONKI for Coronal mass ejection — 2026-10-02 17:36 UTC (opens in a new tab)Coronal mass ejection — 2026-10-02 19:48 UTC
Type C (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 595 km/s
Faint narrow CME with an anvil-like front seen to the NE in SOHO LASCO C2/C3 and GOES CCOR-1 and fully covered by a large data gap in STEREO A COR2. Its source is likely the notable prominence off/behind the east limb…
View on DONKI for Coronal mass ejection — 2026-10-02 19:48 UTC (opens in a new tab)Coronal mass ejection — 2026-10-02 23:36 UTC
Type C (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 654 km/s
This CME is visible to the east in SOHO LASCO C2/C3 and GOES CCOR-1 imagery. The source is likely far-sided as there are no source signatures on the Earth-facing disk around the time of this event.
View on DONKI for Coronal mass ejection — 2026-10-02 23:36 UTC (opens in a new tab)Coronal mass ejection — 2026-10-03 21:24 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 273 km/s
Extremely faint CME/outflow with an unclear front seen to the NE in SOHO LASCO C2 and in early C3 and GOES CCOR-1 difference imagery and covered by a data gap in STEREO A COR2. It is not seen in white light coronagraph…
View on DONKI for Coronal mass ejection — 2026-10-03 21:24 UTC (opens in a new tab)Coronal mass ejection — 2026-10-04 07:24 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- S20W62
- CME speed (most accurate analysis)
- 336 km/s
Faint CME observed to the SW in SOHO LASCO C2, poorly observed in LASCO C3 and GOES CCOR-1, and not in STEREO A COR2; mostly overlapped with following CME: 2026-10-04T07:36Z. The source is likely the first of two paired…
View on DONKI for Coronal mass ejection — 2026-10-04 07:24 UTC (opens in a new tab)Coronal mass ejection — 2026-10-04 07:36 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- Source location / observed at
- S19W62
- CME speed (most accurate analysis)
- 313 km/s
Faint CME observed to the SW in SOHO LASCO C2, poorly observed in LASCO C3 and GOES CCOR-1, and not in STEREO A COR2; mostly overlapped with preceeding CME: 2026-10-04T07:24Z. The source is likely the second of two…
View on DONKI for Coronal mass ejection — 2026-10-04 07:36 UTC (opens in a new tab)Coronal mass ejection — 2026-10-04 17:00 UTC
Type S (SCORE scale, most accurate analysis)
- Event type
- Coronal mass ejection
- Date
- CME speed (most accurate analysis)
- 289 km/s
Filament eruption observed to the SE in SOHO LASCO C2. In real-time the event is slow and not yet observed in other coronagraphs, but will likely be partially obscured by the LASCO C3 and GOES CCOR-1 pylons. The source…
View on DONKI for Coronal mass ejection — 2026-10-04 17:00 UTC (opens in a new tab)
About this data
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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, 10:20 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.