:Issued: 2023 Nov 03 1429 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 wide partial halo coronal mass ejection (CME) was observed in the LASCO/C2 data
starting at 05:36 UTC on Nov 3rd. The CME source was a large filament eruption in the
north-west quadrant. The automated detection by CACTUS suggests a projected velocity
of about CME 500 km/s for the bulk of the CME. Preliminary analysis suggests a
possible arrival at Earth on Nov 06th, but further analysis is ongoing. The CME is
expected to cause minor to moderate geomagnetic conditions with chances of reaching
severe geomagnetic storm levels.
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# Solar Influences Data analysis Center - RWC Belgium                #
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