Solar Activity

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.

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 that is best seen in SDO AIA 304/171 and GOES SUVI 304/284. In SUVI it this filament is seen deflecting northwardly.

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.

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 STEREO A COR2. The potential source may be AR 14535, located around N11W75, with a small region of brightening and moving field lines best seen in SDO AIA 193 imagery starting at 2026-10-02T05:52Z.

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 imagery starting at 2026-10-01T22:01Z around N45E05. No other candidate source eruptions are seen in available EUV imagery.

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. Post-eruption arcades are also visible, and best seen after a data gap in STEREO A EUV 195 imagery. The data gap is from 2026-10-01T14:35Z to 2026-10-02T00:55Z.

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. Also observed in SDO AIA 171/193/304 as filament ejecta and field line movement beyond the NW limb starting around 2026-10-01T02:36Z.

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 field line movement over the NE limb in SDO AIA 171 starting as early as 2026-10-01T00:25Z.

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 the occulting disk. The source of this CME is a small eruption from the vicinity of former AR 14543 (S08W112) seen beginning at approx. 2026-09-30T10:55Z in STEREO A EUVI 195.

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 peaking at 2026-09-30T02:46Z. This flare can be seen clearly in SDO AIA 131, along with field line opening, dimming and an EUV wave seen in SDO AIA 171/193/211, GOES SUVI 284 and STEREO A EUVI 195.

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 ~2026-09-29T15:54Z and further north ~2026-09-29T17:10Z; more likely the second candidate.

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 to an eruption seen on or slightly beyond the eastern limb in SDO AIA/GOES SUVI 304 imagery starting around 2026-09-29T07:00Z.

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 to an eruption seen on or slightly beyond the eastern limb in SDO AIA/GOES SUVI 304 imagery starting around 2026-09-29T03:50Z.

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 around 2026-09-28T21:46Z, but this field line movement starts just after the CME is first observed in LASCO C2. It may also be outflow following filament eruption CME: 2026-09-28T14:36Z.

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. The source of this CME is faint field line opening seen originating from beyond the SW limb in SDO AIA 171 beginning at approx. 2026-09-28T15:45Z.

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 very large filament eruption seen stretching from approx. S10W50 to N45W50 (centered at approx. N27W50) with liftoff beginning at approx. 2026-09-28T13:51Z as seen in SDO AIA, STEREO A EUVI and GOES SUVI 304. Post eruptive arcades, dimming and wide field line opening can be seen in SDO AIA 171/193/211, GOES SUVI 284 and STEREO A EUVI 195.

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 along the SW limb (approx. W140) in STEREO A EUVI 195 beginning at approx. 2026-09-28T03:35Z.

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.

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 in STEREO A EUVI 304 beginning at approx. 2026-09-28T01:00Z.

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 around 2026-09-28T19:51Z and/or 2026-09-27T20:25Z a few degrees to the north.

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 2026-09-27T15:48Z.

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 clear source seen for this event as it is likely far sided, but some faint field line movement can be seen beyond the NE limb in SDO AIA 171 beginning at approx. 2026-09-27T13:45Z.

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 far sided.

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 seen located at approx. S30W100-120 beginning at 2026-09-27T06:00Z as seen in STEREO A EUVI 195.

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 AR 14534 (N10W95) beginning at approx. 2026-09-27T04:30Z in STEREO A EUVI 195. This CME is likely deflected to the West by a large coronal hole in the vicinity of the eruption.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

Faint CME observed to the W only in STEREO A COR2. No distinct source is observed in available EUV imagery.

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.

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.

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.

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 EUVI 304/195 return from a data gap at 2026-09-20T00:15Z and 2026-09-20T00:25 respectively, dimming and post eruptive brightening can be seen in the NW disk, likely left behind by this filament eruption.

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 2026-09-19T18:17Z. There is also an associated opening of field lines on/behind the E limb seen in SDO AIA 193 and a minor prominence/ejecta seen in SDO AIA 304/171 starting after 2026-09-19T18:10Z. The initial front is followed by a series of outflows.

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 STEREO A EUV 304 imagery as a large ejecta off the W limb after 2026-09-19T15Z and not seen in any other EUV imagery. The ejecta is not clearly visible, and it's exact location/longitude is unclear, but it seems to be close to the limb (which would be ~159 deg).