:Issued: 2024 Feb 10 1328 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 strong and fast almost full halo coronal mass ejection (CME) was first detected in
the LASCO/C2 coronagraph imagery around 04:24 UTC on Feb 10th. Strong coronal wave
and dimming related to this event are visible in the SDO/AIA data. The eruption was
related to an activity behind at the east limb. Based on the source location
currently no impact on Earth is expected.
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# Solar Influences Data analysis Center - RWC Belgium                #
# Royal Observatory of Belgium                                       #
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:Issued: 2024 Feb 10 1334 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 weak shock was detected in the solar wind data (ACE and DSCOVR) around 21:47 UTC on
Feb 9th. The interplanetary magnetic field mildly increased from 7 nT to 9.3 nT and
the solar wind speed jumped from 395 km/s to 503 km/s.The solar wind density at the
shock showed slight decrease and the temperature jumped from about 2.4e4 K to 3.6e5
K. The shock is related to an expected weak glancing blow ICME arrival related to the
Feb 6th filament eruption and associated CME. The solar wind velocity has since
steadily declined to below 400 km/s at present. The solar wind parameters are
expected to be at slightly perturbed to nominal levels until next possible glancing
blow arrival anticipated on Feb 12th.
#--------------------------------------------------------------------#
# Solar Influences Data analysis Center - RWC Belgium                #
# Royal Observatory of Belgium                                       #
#                                                                    #
# Website         http://www.sidc.be.                                #
# E-mail          sidc-support@oma.be                                #
# To unsubscribe  http://www.sidc.be/registration/unsub.php          #
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# Legal notices:                                                     #
# - Intellectual Property Rights:                                    #
#   http://www.astro.oma.be/common/internet/en/data-policy-en.pdf    #
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