Coronal Mass Ejection Alerts

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2024-07-17T19:00:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Wed, 17 Jul 2024 19:00:00 +0000
  • Source: S32E90
  • Region:
  • Note: Filament eruption seen to the SE in all coronagraphs, but only a few frames of STEREO COR2A due to a data gap over this period from 2024-07-17T13:38Z-T23:38Z with a rogue image at T20:23Z that assisted with triangulation. The source is a filament sitting on or just inside the SE limb around S32E90, which began to erupt around 2024-07-17T17:00Z. The start of this eruption was observed in SDO AIA 131/171/193/211/304 but cut short due to a shutter maneuver, GOES SUVI 171/195/284/304 caught the entire, spectacular filament eruption.
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2024-07-17T07:48:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Wed, 17 Jul 2024 07:48:00 +0000
  • Source: S10W30
  • Region: 13743
  • Note: CME visible to the west in SOHO LASCO C2/C3 and STEREO A COR2. Associated with an M5.0 flare seen in SDO AIA 131 from S10W30 (AR 13743) which had a peak time of 2024-07-17T06:39Z. Dimming is seen in SDO AIA 193, opening field lines are seen in SDO AIA 171, and post-eruptive brightening is seen in SDO AIA 131/193/304. Seen in SDO AIA imagery before a shutter maneuver/eclipse lasting from 17/07:07Z to 17/07:48Z. Seen also in GOES SUVI and STEREO A EUV imagery.
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2024-07-16T23:23:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Tue, 16 Jul 2024 23:23:00 +0000
  • Source:
  • Region:
  • Note: CME visible to the east in SOHO LASCO C2/C3 and STEREO A COR2. This was determined to likely be separate from CME: 2024-07-16T23:12Z. There were multiple source candidates for this CME, including the M1.9 flare and eruption from AR 3744 or an eruption with moving/opening field lines from AR 3751 around 2024-07-16T20:27Z as seen in SDO AIA 171/193.
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2024-07-16T23:12:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Tue, 16 Jul 2024 23:12:00 +0000
  • Source: N18W11
  • Region: 13744
  • Note: Faint CME seen as a halo in SOHO LASCO C2/C3 and a partial halo in STEREO A COR2. The source is an M1.9 flare from AR 3744 (approx. N18W11) with peak time 2024-07-16T22:06Z. EUV wave, opening field lines, and dimming are best seen in SDO AIA 171/193. The eruption is not visible in STEREO A EUV imagery due to a data gap from 2024-07-16T13:35Z to 23:35Z. While there is some field line opening associated with another M-class flare shortly beforehand, M1.6 with peak time 2024-07-16T21:24Z, the broad area of dimming is more clearly associated with this later M1.9 flare.
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2024-07-16T19:00:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Tue, 16 Jul 2024 19:00:00 +0000
  • Source:
  • Region:
  • Note: Faint CME visible to the southeast in SOHO LASCO C2/C3. Not visible in STEREO A COR2 due to a data gap. The candidate source eruption is best seen as dimming in SDO AIA 193 near S50E30 starting around 2024-07-16T17:57Z.
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2024-07-16T18:00:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Tue, 16 Jul 2024 18:00:00 +0000
  • Source:
  • Region:
  • Note: Narrow, faint, jet-like CME visible to the SE in SOHO LASCO C2/C3. Not visible in STEREO A COR2 due to a data gap. The potential source may be opening field lines visible in SDO AIA 171/193 starting around 2024-07-16T16:57Z. It may be associated with a dimming observed around S50E30 starting at 2024-07-16T17:28Z, but this is believed to be a better candidate for the CME first observed in SOHO LASCO C2 at 2024-07-16T19:00Z.
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