Coronal Mass Ejection Alerts

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2024-05-08T12:24:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Wed, 08 May 2024 12:24:00 +0000
  • Source: S20W11
  • Region: 13664
  • Note: Earth-directed full halo seen in all coronagraphs. The source is a large eruption from AR 3664, which included a long-duration M8.6 flare (S22W11) which peaked at 2024-05-08T12:04Z best seen in SDO AIA 131. An EUV wave and field line movement is observed in SDO AIA 94/131/171/211 with some surface brightening in SDO AIA 304. This flare+CME combo resulted in a small rise in protons observed at SOHO and GOES, but not enough for a threshold crossing. The start time used here is when the shock front emerges, with the brighter bulk front emerging ~2024-05-08T13:00Z.
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2024-05-08T05:36:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Wed, 08 May 2024 05:36:00 +0000
  • Source: S22W10
  • Region: 13664
  • Note: Earth-directed full halo seen in all coronagraphs. The source is a large eruption from AR 3664, which included two flares seen in SDO AIA 131, an initial M3.5 (S21W10) followed by the main long-duration X1.0 (S22W10) which peaked at 2024-05-08T04:30Z and 2024-05-08T05:09Z respectively. An EUV wave and field line movement is observed in SDO AIA 94/131/171/211 with some surface brightening in SDO AIA 304. This flare+CME combo resulted in a small rise in protons observed at SOHO and GOES, but not enough for a threshold crossing.
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2024-05-07T19:48:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Tue, 07 May 2024 19:48:00 +0000
  • Source: S19W08
  • Region: 13664
  • Note: Faint CME with multuple fuzzy fronts closely following the 2024-05-07T16:12Z CME. The CME is to the S in LASCO coronagraph; it is covered for the large part by the data gap in STEREO. The tap ends on 2024-05-08T01:53Z, after which its slowly propagating front is likely seen in STA. Source could be AR 3664 (S19W08) which was displaying some minor ongoing activity. [1:00 PM] Chulaki, Anna (GSFC-674.0)[CATHOLIC UNIV OF AMERICA] Screenshot 2024-05-08 at 1.00.42 PM.png
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2024-05-07T16:12:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Tue, 07 May 2024 16:12:00 +0000
  • Source: S19W06
  • Region: 13664
  • Note: Faint CME with multuple a fuzzy front to the S in LASCO coronagraph; covered for the large part by the data gap in STEREO. The gap ends on 2024-05-08T01:53Z, after which the CME's slowly propagating front is seen in STEREO coronagraph. Source could be AR 3664 (S19W08) which was displaying some minor ongoing activity at the time, signified by very minor dimmings and minor appearance of post-eruptive arcades (e.g. there is such dimming between 12 and 13Z).
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2024-05-07T07:48:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Tue, 07 May 2024 07:48:00 +0000
  • Source:
  • Region:
  • Note: This CME is visible to the northeast in SOHO LASCO C2/C3 and STEREO A COR2 imagery. The source is an eruption and subsequent opening of field lines visible near the northeast limb starting around 2024-05-07T07:00Z as seen in SDO AIA 131, 171, 193, 304 imagery.
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2024-05-07T05:24:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Tue, 07 May 2024 05:24:00 +0000
  • Source: S25E05
  • Region: 13664
  • Note: This CME is very faint but visible to the southeast in SOHO LASCO C2/C3 and STEREO A COR2 imagery following a data gap which ends at 2024-05-07T06:53Z. The source may be related to an eruption/rising loop from Active Region 13664 (S25E05) staring around 2024-05-07T03:12Z as seen in SDO AIA 131.
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