Coronal Mass Ejection Alerts

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2024-07-29T01:25:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Mon, 29 Jul 2024 01:25:00 +0000
  • Source:
  • Region:
  • Note: CME first seen to the SE in SOHO LASCO C2 starting at 2024-07-29T01:25Z. Also seen to the SE in SOHO LASCO C3 and to the SE in STEREO A COR2. The source of this CME is likely a small eruption on or just behind the SE limb best seen in SDO AIA 304 starting at ~2024-07-29T00:18Z. There is also movement in the plasma seen in SDO AIA 193 for a couple hours before and several after, likely attributed to previous and subsequent eruptions from the same region.
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2024-07-28T23:24:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Sun, 28 Jul 2024 23:24:00 +0000
  • Source:
  • Region:
  • Note: This CME is visible to the northwest in SOHO LASCO C2/C3 imagery, but is not seen in STEREO A COR2 due to the faintness of the event. The source is likely far-sided, and may be related to field line movement visible beyond the northwest limb in SDO AIA 171 and 193 imagery starting around 2024-07-28T23:00Z. However, there is another eruption from Active Region 13762 (S10W43) starting around 2024-07-28T22:40Z which exhibits a northern deflection as seen in SDO AIA 131, 171, 193, 304 imagery. This source is less likely, but could possibly be related to this CME.
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2024-07-28T15:05:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Sun, 28 Jul 2024 15:05:00 +0000
  • Source:
  • Region:
  • Note: This CME is visible to the north/northeast in SOHO LASCO C2/C3 and STEREO A COR2 imagery. The source is likely far-sided and related to field line movement visible beyond the northeast limb in SDO AIA 171 imagery around 2024-07-28T14:40Z.
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2024-07-28T14:36:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Sun, 28 Jul 2024 14:36:00 +0000
  • Source: S15W25
  • Region: 13768
  • Note: CME visible to the SW in SOHO LASCO C2/C3 and directly south in STEREO A COR2. The likely source is an M1.6 flare peaking at 2024-07-28T14:22Z from AR 3768 with associated eruption seen as dimming and post-eruptive arcades in SDO 171/193/335 and GOES SUVI 284, centered around S15W30.
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2024-07-28T12:12:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Sun, 28 Jul 2024 12:12:00 +0000
  • Source: S05W40
  • Region: 13762
  • Note: CME visible to the NW in SOHO LASCO C2/C3 and N/NW STEREO A COR2. The source is likely the M7.7 flare peaking at 2024-07-28T10:42Z from AR 3762. An associated eruption directed to the north of the active region, best seen as dimming centered around N05W45, is visible in SDO AIA 193/284 and GOES SUVI 335 starting at 2024-07-28T10:48Z. The eruption is also visible in STEREO A EUV imagery.
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2024-07-28T05:36:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Sun, 28 Jul 2024 05:36:00 +0000
  • Source:
  • Region:
  • Note: CME visible to the NE in SOHO LASCO C2/C3 and STEREO A COR2. The source is a filament eruption seen on the NE limb in available EUV imagery. Filament liftoff starts around 2024-07-28T04:15Z in SDO AIA 304. The eruption is also visible in SDO AIA 193. Opening field lines are visible in SDO AIA 171/193. The eruption is also visible beyond the east limb from the perspective of STEREO A EUV 195/304 imagery.
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  • Start: 05/19/2025 12:12:00
  • Catalog: M2M_CATALOG
  • Source: N30E90
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