:Issued: 2026 Apr 27 1549 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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The CACTUS halo CME alert issued at 01:58 UTC on Apr 27 reporting a partial halo CME
with launch time 05:00 UTC on Apr 23 is a false detection. It was a combination of
two CMEs and they did not arrive at Earth.
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