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: 2016 Nov 09 1027 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 small shock in the solar wind was registered by DSCOVR at 5:43 UT on
November 9. Solar wind speed jumped from about 300 to 330 km/s, while the
magnitude of the Interplanetary Magnetic Field (IMF) jumped from about 4.5
to 7.5 nT. Proton density jumped from about 12 to 25 particles per cc. This
is probably due to the arrival of the November 5 CME. Current solar wind
speed is about 330 km/s and current IMF is about 8 nT. Active conditions (K
Dourbes = 4) are possible on November 9, with a slight chance for minor
storm conditions (K Dourbes = 5). On November 10 and 11, active to moderate
storm conditions (K Dourbes between 4 and 6) are possible due to the
expected arrival of a negative coronal hole high speed stream.
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