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: 2018 Apr 20 1041 UTC
:Product: documentation at http://www.sidc.be/products/presto
#--------------------------------------------------------------------#
# FAST WARNING 'PRESTO' MESSAGE  from the SIDC (RWC-Belgium)         #
#--------------------------------------------------------------------#
Long intervals of negative values of Bz component of the interplanetary
magnetic field (down to -19 nT), and the fast solar wind (about 510 km/s),
resulted in disturbed geomagnetic conditions observed from the early
morning of April 20 (NOAA just reported K=6, and local station at Dourbes
reported K=5). As the solar wind speed is increasing and the interplanetary
magnetic field magnitude continues to be elevated (presently about 14 nT)
we might expect continuation of the disturbed geomagnetic conditions in the
coming hours.
#--------------------------------------------------------------------#
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