Coronal Mass Ejection Alerts

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2024-07-03T11:24:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Wed, 03 Jul 2024 11:24:00 +0000
  • Source: S20W65
  • Region: 13730
  • Note: This CME is visible to the southwest in SOHO LASCO C2/C3 and STEREO A COR2 imagery. The source is likely an eruption from Active Region 13730 (S20W65) starting around 2024-07-03T10:57Z as seen in SDO AIA 131, 171, 193, 304 imagery. Minor field line movement is visible over the southwest limb in SDO AIA 171 and 193 at this time as well.
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2024-07-03T08:00:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Wed, 03 Jul 2024 08:00:00 +0000
  • Source: S19W62
  • Region: 13730
  • Note: This CME is visible to the SW in SOHO LASCO C2, C3, and STEREO A COR2 imagery. The source of this CME is an M1.5 flare from AR13730 as seen in SDO/AIA 131 with associated moving/opening field lines visible in SDO/AIA 193.
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2024-07-02T21:24:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Tue, 02 Jul 2024 21:24:00 +0000
  • Source: S19W57
  • Region: 13730
  • Note: Faint CME seen to the SW in SOHO LASCO C2, C3, and after a data gap in STEREO A COR2 imagery. The source appears to be a C4.7 flare from AR3730 visible in SDO/AIA 131 with associated moving/opening field lines visible in SDO/AIA 193.
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2024-07-02T18:24:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Tue, 02 Jul 2024 18:24:00 +0000
  • Source: S20W56
  • Region: 13730
  • Note: Faint CME seen to the SW in SOHO LASCO C2 and C3. There is a data gap in STEREO A COR2 imagery for this event. The source appears to be an eruption with moving/opening field lines from AR13730, possibly associated with a lower level C-class flare as seen in SDO/AIA 193 and 131.
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2024-07-02T08:12:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Tue, 02 Jul 2024 08:12:00 +0000
  • Source:
  • Region:
  • Note: Faint CME visible to the east in SOHO LASCO C2/C3. Due to it's faintness, it is not clearly visible in STEREO A COR2. The potential source is an eruption on or just beyond the east limb from the point of view of SDO EUV imagery. An eruption can be seen on the limb starting at 2024-07-02T05:20Z, around latitude S15, in SDO AIA 335. Opening field lines are also seen in SDO AIA 171/193, and post-eruptive loops are best seen in SDO AIA 335.
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2024-07-02T07:12:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Tue, 02 Jul 2024 07:12:00 +0000
  • Source:
  • Region:
  • Note: CME visible in the southwest of SOHO LASCO C2/C3 and STEREO A COR2. The source is not found in available EUV imagery, but faint field line movement may be seen beyond the SW limb in SDO AIA 171 starting around 2024-07-02T06:00Z.
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  • Start: 04/04/2025 18:00:00
  • Catalog: M2M_CATALOG
  • Source: N20W97
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