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

Archive

Latest issue

:Issued: 2018 Oct 07 1127 UTC
:Product: documentation at http://www.sidc.be/products/presto
#--------------------------------------------------------------------#
# FAST WARNING 'PRESTO' MESSAGE  from the SIDC (RWC-Belgium)         #
#--------------------------------------------------------------------#
The compression region in front of the fast solar wind stream expected for
today is already visible in DSCOVR data starting at 10:00 UT with increased
magnetic field intensities reaching 14 nT and Bz up to -10 nT. The polarity
of the interplanetary magnetic field changed from negative to positive, the
same polarity as the coronal hole on the Sun. Disturbed geomagnetic
conditions are expected up to major storm levels.
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