:Issued: 2024 Jan 22 0738 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 21, at 00:24 UTC with the main direction towards North-East.
SIDC/CACTUS tool provides an estimated projected angular width of 186 degrees, and a
projected speed of 480 km/s. The source of this CME was located near the bipolar NOAA
Active Region 3559 (North-East quadrant). The analysis indicated at most a glancing
blow would be visible in the solar wind parameters near Earth around January 24-25
with a minor impact on the solar wind condition and geomagnetic activity.
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# Solar Influences Data analysis Center - RWC Belgium                #
# Royal Observatory of Belgium                                       #
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:Issued: 2024 Jan 22 1233 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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Following the M1.5-calss flare associated with NOAA Active Region 3559 and registered
with a peak time at 06:22 UTC on January 22, the proton flux increased as observed in
GOES-16 and GOES-18 measurements. It is now reaching the 10 pfu (10 MeV particles)
alert threshold.
#--------------------------------------------------------------------#
# 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    #
# - Liability Disclaimer:                                            #
#   http://www.astro.oma.be/common/internet/en/disclaimer-en.pdf     #
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