PRESTO ALERT

Fast warning for important solar events with implications for the space environment.
Source SIDC (RWC-Belgium)
Frequency ASAP, when needed
Format Plain text
Mail header PRESTO ALERT
SIDC code presto

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Latest issue

:Issued: 2024 Jul 11 1144 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 detected in the LASCO/C2
coronagraph imagery starting at 21:24 UTC on July 10. The CME is related to
a prominence eruption near the north-east limb. Due to the location of the
source region no significant impact on Earth is expected, though potential
arrival of a weak shock front is undergoing analysis. At a similar time
another narrow southward CME was observed followed a filament eruption to
the south of NOAA AR 3738. Despite its location on the central meridian
this second CME is rather narrow and travels mostly southward suggesting no
significant Earth-directed component.
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