CME Scoreboard
CCMC CME Scoreboard
CME arrival time predictions from the research community:The CME Scoreboard is part of the the CME Arrival Time and Impact Working Team in the Community-wide International Forum for Space Weather Modeling Capabilities Assessment.
The CME Scoreboard (developed at the Community Coordinated Modeling Center, CCMC) is a research-based forecasting methods validation activity which provides a central location for the community to:
- submit their forecast in real-time
- quickly view all forecasts at once in real-time
- compare forecasting methods when the event has arrived
- Anyone can view prediction tables
- Registered users can enter in your CME shock arrival time forecast after logging in:
- Registered Users: Begin by finding your CME under the "Active CMEs" section, then click "Add Prediction" and select your forecasting "Method Type" from the list.
- Power Users: If you do not see your CME listed under the "Active CMEs" section, click "Add CME" to get started (Email M. Leila Mays to request power user privileges). To enter the actual CME shock arrival time, click "Edit CME" after you are done entering your prediction(s).
- To register for an account, please email M. Leila Mays with your name, affiliation, and email address.
- Click here to see a list of registered methods. If you would like to register your prediction method, please send an email to M. Leila Mays or Yihua Zheng with your model/technique details.
- Click here for more detailed instructions.
- To receive periodic announcements and/or automated email notifications when a new CME is added to the CME Scoreboard, you can subscribe to our mailing list by sending an email to M. Leila Mays with your name and email.
- Publication: Riley et al. (2018). Forecasting the arrival time of coronal mass ejections: Analysis of the CCMC CME scoreboard. Space Weather, 16, 1245-1260. https://doi.org/10.1029/2018SW001962
- CME Arrival Time Working Team page
Active CMEs:
No Active CMEPast CMEs:
| CME: 2023-03-20T14:42:00-CME-001 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Actual Shock Arrival Time: 2023-03-23T09:10Z | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: [PRELIMINARY] Bright, wide and asymmetrical shape CME seen to the NE in SOHO and STEREO A coronagraphs. The eruption is characterized by an erupting sigmoid/S-shaped structure centered around N27E20, though dimming and an EUV wave signature is limited to longitudes closer to 30-50 degrees east. The likely arrival is a clear interplanetary shock signature characterized by initially weak but rapidly increasing enhancement in the magnetic field components, the rise in density from 14 particles/cc to 18 particles/cc, and small but rapid wind speed increase from 465 km/s to 480 km/s. Magnetic field and solar wind density continue to increase further after the IPS. This signature is under review as it may be associated with CME 2023-03-20T02:41Z (or with combined front of these two CMEs). Waiting for assessment by LASSOS team. |
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| CME: 2023-03-20T02:41:00-CME-001 | |||||||||||||||||||||||||||||||||||
| Actual Shock Arrival Time: 2023-03-23T09:10Z | |||||||||||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: [PRELIMINARY] Faint, wide CME seen to the southwest in SOHO LASCO C2 imagery during a STEREO A data gap and occurring during a subsequent STEREO campaign with limited imagery. Likely associated with a broad area of coronal restructuring, coronal dimming, destabilization, and filament eruptions seen in SDO 193 and 304 starting around 2023-03-20T01:53Z bounded by an area created by S10 to S30, W05 to W30. Arrival time (and arrival itself) are tentative as the arrival signature is under review as it may be associated with CME 2023-03-20T14:42Z instead or with combined front of these two CMEs. Waiting for assessment by LASSOS team. |
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| CME: 2023-03-17T10:58:00-CME-001 | |||||||||||||||||||||||||||||||||||
| Actual Shock Arrival Time: 2023-03-20T22:37Z | |||||||||||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: [PRELIMINARY] This CME overlaps the CME first seen in SOHO LASCO C2 at 2023-03-17T10:30Z to the SW. There are currently ongoing campaigns impacting the amount of available imagery for the SOHO LASCO C3 and STEREO A COR2 coronagraphs. The source of this CME is a large filament eruption seen in SDO/AIA 304 and GOES SUVI 304 starting around 2023-03-17T08:50Z with full lift off by 2023-03-17T12:17Z. The filament has it's largest mass centered around S40W30, but stretches between the longitudes of 0 degrees to 40 degrees and the latitudes of -20 degrees to -50 degrees. Possible minor arrival signature includes gradual increase of total magnetic field to over 11 nT with rotation of at least two magnetic field components, possibly indicating a CME arrival/glancing blow. It is likely embedded in a HSS. Waiting for assessment from LASSOS team. |
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| CME: 2023-03-13T10:53:00-CME-001 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| This CME was not detected at Earth! | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: [PRELIMINARY] CME seen to the NW in STEREO Ahead COR2 coronagraph associated with a filament eruption seen near N30E02 which erupts with significant deflection to the north and west as seen in SDO/GOES 304 imagery around 2023-03-13T09:54Z. Waiting for assessment by LASSOS team. |
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| CME: 2023-03-12T19:24:00-CME-001 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Actual Shock Arrival Time: 2023-03-15T03:48Z | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: [PRELIMINARY] CME going South in SOHO LASCO and SSW in STEREO A COR2. Its source is a gradual eruption of complex, mostly longitudinally oriented filament centered approximately around ~S25E20 (filament seems to extend from at least S5 to S50) and is seen starting to erupt in AIA 304 and 193 around 2023-03-12T18:30Z. Possible arrival is marked by an increase in B_total from 8 nT to 22.5 nT, reaching a maximum of 26 nT at 2023-03-15T05:02Z. Accompanied by an increase in speed from approximately 420 km/s to 550 km/s, an increase in density, and increase in temperature. There is probably also an admixture of HSS in the signature. We are awaiting evaluation by LASSOS team. |
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| CME: 2023-03-10T17:24:00-CME-001 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Actual Shock Arrival Time: 2023-03-14T03:58Z | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: [PRELIMINARY] Wide CME visible in the SW of SOHO LASCO C2/C3 and STEREO A COR2. Source is a filament eruption stretching from S25W30 to N05W60 with liftoff starting around 2023-03-10T16:00Z. Source signature includes an EUV wave and dimming seen in SDO AIA 193 and opening field lines seen in SDO AIA 171. This eruption is also visible in STEREO A EUVI imagery. Possible arrival signature: Weak shock characterized by rapid rise in magnetic field strength from 8.5 nT to 13 nT along with jump in wind speed from ~315 km/s to near 390 km/s with simultaneous pileup and increase in temperature. Could be the start of a high speed stream due to the sharp increase in solar wind speed. There is a candidate coronal hole which reached disk center on 2023-03-11. Pending LASSOS review. |
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| CME: 2023-02-28T09:53:00-CME-001 | ||||||||||||||||||||||||||
| This CME was not detected at Earth! | ||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: [PRELIMINARY] Very faint CME in the NW in both coronagraphs first seen after the end of the nighttime data gap in STEREO A COR2. The start is currently covered by the data gap in SOHO LASCO but it is also faintly seen in C3 after this gap. One possible (front-sided) source could be a relatively minor eruption seen after 2023-02-28T06:19Z in AIA 304, 171, 193. In SDO AIA 304 there is a bright flare, then dark material (possibly ejecta). Brightening then dimming of area seen in GOES SUVI 284. It could be associated with a C2.5 class flare from AR 3234 at the time (N20W30). However, this faint event could also be back sided (no coronal signatures found for this). Arrival signature is still under analysis. |
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| CME: 2023-02-25T19:38:00-CME-001 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Actual Shock Arrival Time: 2023-02-27T10:15Z | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: Bright partial halo CME with a bulk portion predominantly to the West in STEREO A COR2 imagery. No SOHO imagery available during initial entry. Source is a filament eruption and simultaneous M6.3 flare from AR13229. An EUV wave is best seen in GOES/SUVI 284 starting at 2023-02-25T18:54Z. A post-eruptive arcade is present in most SDO/AIA wavelengths following the eruption. Likely CME arrival (shock and sheath) are seen at 2023-02-27T10:15Z, as jump in magnetic field to over 20 nT, accompanied by sharp drop in density and temperature. This signature is being discussed with LASSOS team. |
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| CME: 2023-02-24T20:36:00-CME-001 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Actual Shock Arrival Time: 2023-02-26T18:43Z | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: Partial halo CME seen mostly to the NW in SOHO LASCO and STEREO A COR2A coronagraphs. The CME is associated with an M3.7-class flare and subsequent eruption from AR3229. The flare induces a large nearby filament channel to break and lift off seen best in SDO/GOES 304, but also in SDO 193 and GOES-16 195. The flare and CME are also associated with a small enhancement in 10 MeV protons observed at GOES. The CME arrival is first seen at 2023-02-26T18:43Z in DSCOVR data as a rapid increase in magnetic field from 10 nT to near 20 nT as well as a simultaneous increase in solar wind speed from 470 km/s to 540 km/s and density from 10 to 20 particles/cc. |
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| CME: 2023-02-22T14:36:00-CME-001 | ||||||||||||||||||||||||||
| This CME was not detected at Earth! | ||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: This CME is visible to the NE in SOHO LASCO C2/C3 and STEREO A COR2. The source is a large filament eruption which stretches across the NW quadrant and lifts off around 2023-02-22T13:30Z as seen in SDO AIA 131, 171, 193 and 304 imagery. The eruption is also visible in STEREO A EUVI imagery. |
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| CME: 2023-02-21T02:48:00-CME-001 | |||||||||||||||||||||||||||||||||||
| Actual Shock Arrival Time: 2023-02-24T12:08Z | |||||||||||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: CME seen in the NW of SOHO LASCO C2/C3 and STEREO A COR2. The CME is partially obscured by the pylon in SOHO LASCO C3. Potential source eruption starts around 2023-02-21T00:00Z and is a filament eruption characterized by movement/lift-off in SDO AIA 304, dimming in SDO AIA 193, post eruptive arcades in SDO AIA 171, and opening field lines in SDO AIA 171/193. Also visible in the NW of STEREO A EUVI 195. This CME may deflect towards the south in the field of view. Arrival signature discussed by Tarik Salman (LASSOS): Possible ICME encounter starting around 2023-02-24T12:08UT. This coincides with the start of a coherent period of field components and decreasing proton density. The total magnetic field is not significantly elevated over the background. The field components have constant profiles for extended periods which can be an indication of a possible glancing blow. This ICME is also observed to be expanding at L1. A possible end of this ICME is around 2023-02-25T07:26UT. |
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| CME: 2023-02-17T20:23:00-CME-001 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Actual Shock Arrival Time: 2023-02-20T09:52Z | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: Asymmetric halo CME associated with X2.2 flare from AR3229 (N25E65) at 17/1957UT, with an EUVI wave and with the eruption seen as dimming (as far east as -20 deg), best noticeable in STEREO A EUVI 195. The bright bulk of the CME seems to have gone in the more Eastern direction. The likely arrival of this CME is signified by a sharp increase in magnetic field to 14 nT, accompanied by a sudden jump in ion density to over 17 particles/cm^3 and of the solar wind speed from 370 to 430 km/s. |
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| CME: 2023-02-16T10:48:00-CME-001 | ||||||||||||||||||||||||||
| This CME was not detected at Earth! | ||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: This CME is visible to the NW in SOHO LASCO C2, C3, and STEREO A COR2 imagery with a fairly flat front. It moves very quickly through the COR2A field of view. The source of this CME is a filament eruption from AR13216 starting around 2023-02-16T10:10Z. The eruption is most notably seen in SDO/AIA 304, 193, 171, 211, and 131 as well as STEREO A EUVI 195. A post-eruptive arcade follows the eruption as well as notable brightening around the region during this eruption. |
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| CME: 2023-02-15T02:12:00-CME-001 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| This CME was not detected at Earth! | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: Faint partial halo CME seen in SOHO LASCO C2/C3. Not visible in STEREO A COR2 due to a data gap from 2023-02-14T14:23Z to 2023-02-15T09:23Z. This eruption is associated with a C5.6 flare from AR 13220 and an eruption best seen in SDO AIA 304 starting around 2023-02-15T01:00Z centered around S05E15. The eruption can also be seen with dimming in SDO AIA 193. This CME leading edge is asymmetrical and has a component directed towards the south/southeast first visible in SOHO LASCO C2 at 2023-02-15T02:48Z while the rest of the CME starting at 02:12Z is directed more eastward. This eruption may be 2 simultaneous eruptions in close proximity but it is not clear if there are separate CMEs. |
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| CME: 2023-02-11T11:12:00-CME-001 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Actual Shock Arrival Time: 2023-02-13T17:02Z | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: Max Kp: 5.33 CME Note: The CME visible N/NE in SOHO LASCO C2, C3 and STEREO A COR2 imagery. There is a more clear bulk portion that shows filamentary structures within it and then a more faint partial halo seen more clearly in difference imagery. The source is a filament eruption from the region NE of AR13216, there is also subsequent brightening, potential flaring from AR13216 during this eruption. From Tarik Salman, LASSOS team: Arrival is marked by the enhancement of the B field over the background, accompanied by a drop in proton density and the start of a low-density period. Temperature data seems to be sensitive. A significant data gap makes it difficult to analyze the nature of field rotations. However, the rotations might not be significant due to a possible flank crossing. Due to that, at L1, the flux rope is possibly not encountered. |
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| CME: 2023-02-10T12:36:00-CME-001 | ||||||||||||||||||||||||||
| This CME was not detected at Earth! | ||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: Partial halo CME seen in the SW of SOHO LASCO C2/C3 and STEREO A COR2. The source is a filament eruption around S20W35 that lifts off starting around 2023-02-10T08:00Z. Data gap in STEREO A COR2 from 2023-02-10T11:09Z to 2023-02-10T15:23Z. This event might have been overtakend by the 2023-02-11T11:12Z CME. |
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| CME: 2023-02-08T17:06:00-CME-001 | |||||||||||||||||||||||||||||||||||
| This CME was not detected at Earth! | |||||||||||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: Very faint full halo CME seen best in SOHO C3 running difference imagery from 2023-02-08T17:00Z to 19:00Z and as northern and southern lobes in C3 white light imagery and NW/SW lobes in STEREO A COR2A imagery. May possibly be associated with an M1.6-class solar flare and subsequent eruption from AR3213 with dimming seen in SDO 193 and GOES-16 284 starting around 16:09Z. This analysis is fairly speculative. |
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| CME: 2023-02-07T15:23:00-CME-001 | ||||||||||||||||||||||||||
| This CME was not detected at Earth! | ||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: This CME is visible to the N/NE in SOHO LASCO C2/C3 and STEREO A COR2 coronagraph imagery. The source is likely the eruption and subsequent C3.7 flare from AR 3213 (N29E06) seen in SDO AIA 131, 171, 193, 304 and STEREO A 195 and 304 imagery starting around 2023-02-07T12:30Z. |
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| CME: 2023-02-03T13:36:00-CME-001 | ||||||||||||||||||||||||||
| This CME was not detected at Earth! | ||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: Secondary eruption closely following behind CME: 2023-02-03T10:36Z seen to the west in SOHO LASCO and STEREO A coronagraphs. There are no secondary eruptions seen on the Earth facing-disk, but preliminary measurements suggest it too is associated with a broad area of long-lasting dimming seen in the western hemisphere as evidenced by GOES-16 284 and SDO 193. |
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| CME: 2023-02-03T10:36:00-CME-001 | ||||||||||||||||||||||||||||||||||||||||||||
| This CME was not detected at Earth! | ||||||||||||||||||||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: Bright CME seen to the west in SOHO and STEREO A coronagraphs. Appears to be associated with a broad area of dimming on the western portion of the Earth-facing disk from the equator up to about 25 degrees north as seen in GOES 284 imagery starting around 08:49Z with evidence of a minor filament eruption in the northern hemisphere, though moving field lines off the northwest limb in SDO 171 suggest possible farsidedness. |
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| CME: 2023-01-20T16:12:00-CME-001 | ||||||||||||||||||||||||||||||||||||||||||||
| Actual Shock Arrival Time: 2023-01-23T02:59Z | ||||||||||||||||||||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: Max Kp: 3.0 CME Note: CME directed mainly south in SOHO LASCO and STEREO A COR2 imagery which is embedded within CME: 2023-01-20T13:36Z. The source is a C5.3-class flare and subsequent eruption from AR3190 located near S15W13 seen in SDO 193/304/171 with brightening at the source and opening field line movement followed by a broad area of dimming to the south, east, and west. Magnetic field discontinuity indicates arrival of the interplanetary shock near 2023-01-23T02:59Z with simultaneous rapid density and velocity increases. |
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| CME: 2023-01-20T13:38:00-CME-001 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| This CME was not detected at Earth! | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: Bright, wide CME with filamentary structure seen to the southwest in SOHO LASCO and STEREO A COR2 coronagraphs. Associated with a large-scale filament eruption whose filament at 2023-01-20T11:00Z was stretched from S42W25 northwest to about S30W70 (center point approximately S35W52). The eruption and post eruptive brightening is seen best in SDO 304 but also in SDO 193/171/211 occurring near 13:00Z. Arrival observed at Earth on 2023-01-23T02:59Z is believed to be more likely associated with CME: 2023-01-20T16:12Z, though its arrival is possibly associated with this CME. |
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| CME: 2023-01-19T11:36:00-CME-001 | ||||||||||||||||||||||||||||||||||||||||||||
| This CME was not detected at Earth! | ||||||||||||||||||||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: Super faint CME (best seen in difference imagery) E in C2/C3 and COR2A. Its source is likely the relatively minor eruption associated with M class flare from AR 3196 (N12E38) peaking at 2023-01-19T10:12Z. Eruption is seen in AIA 304 starting around 2023-01-19T10:20Z and is directed mostly southward (explaining why the CME might be deflected to the south). Eruption is also seen in AIA 193 and EUVI A 195 as dimming (and possibly a EUV wave), with dimming mostly to the SE of the AR. Arrival observed at Earth on 2023-01-23T02:59Z is believed to be more likely associated with CME: 2023-01-20T16:12Z, but could be a combined arrival of two or more CMEs, including this one. |
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| CME: 2023-01-15T03:48:00-CME-001 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| This CME was not detected at Earth! | |||||||||||||||||||||||||||||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: [PRELIMINARY]: Potential CME arrival signature is being discussed with LASSOS team |
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| CME: 2023-01-14T21:36:00-CME-001 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| This CME was not detected at Earth! | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: [PRELIMINARY] This CME is visible as a partial halo to the W/SW in SOHO LASCO C2/C3 and STEREO A COR2 imagery. The source is an eruption and subsequent M4.6 flare from AR 3182 seen in SDO AIA 131, 171, 193, 304 imagery starting around 2023-01-14T20:35Z. An opening of field lines is visible in SDO AIA 171 at 20:50Z and post eruptive loops start to form in SDO AIA 193 around 22:30Z. Eruption is also visible in STEREO A EUVI 195 and 304 imagery. Potential CME arrival signature is being discussed with LASSOS team |
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| CME: 2023-01-12T02:36:00-CME-001 | ||||||||||||||||||||||||||
| Actual Shock Arrival Time: 2023-01-14T21:50Z | ||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: Max Kp: 5.0 CME Note: Faint CME with an interesting mushroom shape - or likely two or even three very close successive CMEs NNW in SOHO LASCO C2/C3 and STEREO A COR2. The source is likely a gradual eruption(s) in and NW of AR 3185 (N20W28) seen starting around 2023-01-12T01:00Z as seen in AIA 193 and EUVI A 195 with post-eruptive arcades near the AR and in the location NE of the AR. Arrival is likely associated with the interplanetary shock observed at L1 on 2023-01-14T21:50Z. This signature was characterized by an increase in Btotal to 11nT and solar wind speeds up to ~500 km/s. It was also accompanied by slight increases in density and temperature. Per advice from the LASSOS team, this arrival is likely a glancing blow due to the lack of a clear rotation in magnetic field components/flux rope signature. |
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| CME: 2023-01-11T17:00:00-CME-001 | ||||||||||||||||||||||||||
| This CME was not detected at Earth! | ||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: This is a large, bright and wide CME visible to the SE in SOHO LASCO C2/C3, and STEREO A COR2 imagery. The likely source is seen as clear moving/opening field lines beyond the SE limb in STEREO EUVI A 195 after 2023-01-11T16:35Z, followed by high rising post-eruptive arcades on the limb in EUVI A 195 an hour later. (Note: There also was an eruption in the SE on the Earth-facing disk seen in AIA 304 starting 2023-01-11T20:45Z (with a significant-area dimming south of the AR 3184(S13E41) seen in AIA 193) but this eruption was several hours later than the start of the CME and thus likely unrelated to it). CME was most likely backsided. This arrival is still being analyzed. |
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| CME: 2023-01-11T09:48:00-CME-001 | ||||||||||||||||||||||||||
| This CME was not detected at Earth! | ||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: This CME is seen to the NE in SOHO LASCO C2, C3, and STEREO A COR2 imagery. It overlaps the 2023-01-11T08:48Z CME. The source of this CME appears to be the M3.1 flare from AR13186. There is a simultaneous filament eruption seen beyond the NE limb that appears to be associated with the 2023-01-11T08:48Z CME. This CME was a candidate for the interplanetary shock observed at L1 on 2023-01-14T21:50Z, but per advice from the LASSOS team, it appeared the CME measured too fast to be responsible for the arrival signature (which did not have a dramatic increase in solar wind speeds). |
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| CME: 2023-01-08T05:00:00-CME-001 | ||||||||||||||||||||||||||
| This CME was not detected at Earth! | ||||||||||||||||||||||||||
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Observed Geomagnetic Storm Parameters: ---- CME Note: CME seen SSE in SOHO LASCO C2/C3 and STEREO A COR2. Possible source: a large area eruption centered around ~S40E30 to the S or SW of AR 3182 (S17E44), seen slowly developing as a complex shape dimming (or two nearby areas of dimming) in SDO AIA 193 starting around 2023-01-08T03:30Z and happening soon after multiple middle and upper C-class flares from AR 3182 earlier in the morning. |
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