Coronal Mass Ejection Alerts

Home » Astronomy Information » Latest Astronomy Alerts » Coronal Mass Ejection Alerts

2024-06-29T16:12:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Sat, 29 Jun 2024 16:12:00 +0000
  • Source:
  • Region:
  • Note: Wide CME visible to the SW in SOHO LASCO C2/C3 and S/SW in STEREO A COR2. The source is a large filament eruption spanning from S30E10 to S20W40. Liftoff seen starting at about 2024-06-29T15:09Z in SDO AIA 304. Dimming and post-eruptive arcades are visible in SDO AIA 193. Opening field lines are visible in SDO AIA 171. The eruption is also visible in STEREO A EUV 195/304 after a data gap from 2024-06-29T13:05Z to 2024-06-29T17:25Z.
More Info

2024-06-29T04:00:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Sat, 29 Jun 2024 04:00:00 +0000
  • Source:
  • Region:
  • Note: Very faint loop CME seen to the S/SW in SOHO LASCO C2/C3 and STEREO A COR2. The source is a bit elusive, but may possibly be the liftoff of some filamentary material from one of the many filaments currently on the Earth-facing disk. Based on a stereoscopic measurement (with Lat:-17 and Lon:36), this may possibly be the liftoff of some material from a filament visible in SDO AIA 304 imagery which spanned from S40W10 to S25W60 at the start time of this CME. This CME overlaps with CME:2024-06-29T03:36Z.
More Info

2024-06-29T03:36:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Sat, 29 Jun 2024 03:36:00 +0000
  • Source: S20W62
  • Region: 13719
  • Note: CME with a hazy leading edge seen to the W in SOHO LASCO C2/C3 and STEREO A COR2. The source is an eruption at S20W62, at AR 3719, starting at 2024-06-29T03:09Z as seen in SDO AIA 304. Ejecta can be seen throughout the eruption in SDO AIA 304 and 171. Opening field lines are seen in SDO AIA 171 and 193. Eruption is also visible in STEREO A EUVI 193 and 304. The CME:2024-06-29T04:00Z overlaps with this CME.
More Info

2024-06-28T05:36:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Fri, 28 Jun 2024 05:36:00 +0000
  • Source:
  • Region:
  • Note: CME seen to the W in all coronagraphs. The source for this CME is uncertain and unobserved in SDO AIA imagery, analyzed as a plane-of-sky for its speed.
More Info

2024-06-28T00:36:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Fri, 28 Jun 2024 00:36:00 +0000
  • Source: S20E25
  • Region:
  • Note: Faint partial halo seen to the SE in SOHO LASCO C2/C3, and just to the SE in STEREO COR2A. The source for this CME is not entirely certain, but appears to originate from the cluster of ARs 3723, 3727, 3728, centered roughly around S20E25 (as such, this is used as the CME source coordinates). Some small C-class flaring is observed here as early as 2024-06-27T19:45Z, more noticeable closer to 2024-06-27T21:24Z possibly due to post-eruptive loops observed across SDO AIA 94/131/171/193. However, more confidence in this area is given via a good triangulation of the CME front between SOHO LASCO C2/C3 and STEREO COR2A in swpc_cat when measuring.
More Info

2024-06-27T21:12:00-CME-001

  • Catalog: M2M_CATALOG
  • Start: Thu, 27 Jun 2024 21:12:00 +0000
  • Source:
  • Region:
  • Note: Thin CME seen to the SE in all coronagraphs. The source for this CME is not certain, only potentially observed in SDO AIA 171 as moving field lines over the SE limb around 2024-06-28T20:55Z, indicating a source may exist on or near the limb.
More Info

Latest Astronomy Alerts

Coronal Mass Ejection Alerts

2025-04-06T21:24:00-CME-001

  • Start: 04/06/2025 21:24:00
  • Catalog: M2M_CATALOG
  • Source:
Read More

Space Weather Alerts

K04W 2025-04-06 23:58:36.893

Space Weather Message Code: WARK04 Serial Number: 4907 Issue Time: 2025 Apr 06 2358 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4906 Valid From: 2025… Read More

Geo Magnetic Storm Alerts

3-Day Forecast - 2025 Apr 07 0030 UTC

:Product: 3-Day Forecast :Issued: 2025 Apr 07 0030 UTC # Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center # A. NOAA Geomagnetic Activity Observation and Forecast… Read More

Solar Flare Alerts

2025-04-05T19:54:00-FLR-001

  • Begins: 04/05/2025 19:54:00
  • Ends: 04/05/2025 20:12:00
  • Class: M1.0
Read More