:Issued: 2024 Jan 21 1303 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) was observed in SOHO/LASCO C2 chronograph
images on January 20, at 09:24 UTC with the main direction towards South-East.
SIDC/CACTUS tools provide an estimated projected angular width of 151 degrees, and a
projected speed of 631 km/s. The source of this CME is a filament eruption located
near the central meridian. Due to its location, the CME is expected head-in towards
Earth and impact the solar wind condition near Earth on January 22-23, with also a
possible geomagnetic impact.
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