:Issued: 2024 Jan 23 1552 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 partial halo Coronal Mass Ejection (CME) can be seen in LASCO-C2/SOHO images
starting from yesterday 10:36 UTC. It is associated with a filament eruption close to
the solar meridian and is likely to be geo-effective. It is estimated to arrive at
the second half of 25 Jan.
A partial halo CME, that can also been seen in LASCO-C2/SOHO images as lunched today
04:24 UTC, is associated with a C3 flare from the solar location S19W33. It is likely
to be geo-effective and arrive at the second half of 26 Jan.
A CME seen in LASCO-C2/SOHO images starting from yesterday 22:00 UTC is associated
with an M1 flare from the solar location S17W30. It is a relatively narrow CME, but
is expected to deliver a glancing blow to Earth's environment towards the second half
of Jan 26.
A number of other CME, both partial halo and non-halo, can be seen in LASCO-C2/SOHO
images during the last 48 hours. However, only those reported above are estimated to
be geo-effective.
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