PRESTO ALERT

:Issued: 2025 Jun 29 1954 UTC
:Product: documentation at http://www.sidc.be/products/presto
#--------------------------------------------------------------------#
# FAST WARNING 'PRESTO' MESSAGE  from the SIDC (RWC-Belgium)         #
#--------------------------------------------------------------------#
A partial halo coronal mass ejection (CME) was first observed in
SOHO/LASCO-C2 images around 21:00 UTC on Jun 28. It was associated with the
C4.0 flare (peaked at 19:54 UTC on June 28) produced by SIDC Sunspot Group
537 (NOAA Active Region 4126). With its source region (N06 W21) closer to
the central meridian, the corresponding ICME is expected to impact the
Earth on Jul 01-02.
#--------------------------------------------------------------------#
# 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          #
#                                                                    #
# 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     #
# - Use and processing of your personal information:                 #
#   http://www.astro.oma.be/common/internet/en/privacy-policy-en.pdf #
#--------------------------------------------------------------------#