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Solar alert

Issued on 2024 Jun 11 1141 UTC

Three partial halo coronal mass ejections (CME) have been observed in SOHO/LASCO-C2 chronograph imagery. The first one was a partial halo CME detected starting at 11:00 UTC on June 10 in LASCO-C2 data. It is most likely related to two M-class flares from NOAA AR 3697 starting from 10:18 UTC, preceding the X1.5 flare with peak time 11:08 UTC. The CME source region is believed to be behind the west limb and no impact on Earth is expected. The second one was a partial halo CME detected starting at 18:36 UTC on June 10 in LASCO-C2 data. It is most likely associated with the M9.5 flare from NOAA AR 3697 with peak time 18:40 UTC on June 10. The CME source region is believed to be behind the west limb and no impact on Earth is expected. The third partial halo CME was first detected at 23:36 UTC on June 10 in LASCO-C2 data. The CME is directed primarily to the south-west and has an estimated velocity of about 1000 km/s. It is possibly associated with a prominence eruption in the south-west quadrant around 23:15 UTC on June 10. Due to the source location only a minor glancing blow at Earth can be possible. Further analysis to determine potential impact on Earth is ongoing.

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