PRESTO ALERT

:Issued: 2024 Apr 25 1124 UTC
:Product: documentation at http://www.sidc.be/products/presto
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# FAST WARNING 'PRESTO' MESSAGE  from the SIDC (RWC-Belgium)         #
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A slow partial halo coronal mass ejection (CME) was observed in the
LASCO/C2 coronagraph imagery starting at 18:00 UTC on April 23rd. The CME
is propagating to the south-west and has an estimated projected velocity
around 400 km/s. The eruption appears related to the M2.9 flare, peak time
17:44 UTC on April 23rd, produced by NOAA AR 3638. An associated type II
radio emission was observed starting at 17:10 UTC on April 23rd with
estimated velocity of 358 km/s. Analysis of this event suggests no to
possibly minor glancing blow impact on Earth late on April 27th.
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