:Issued: 2023 Sep 03 0935 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 moderate geomagnetic storm was observed globally as the NOAA planetary Kp index
reached 6- between 00:00 UTC and 03:00 UTC on September 03. The geomagnetic storm was
triggered by enhanced solar wind conditions likely related to ongoing high speed
stream influence, possibly combined with a weak arrival of CMEs from Aug 29 – 30.
Further minor to moderate geomagnetic storm conditions may be possible in the next 24
hours due to HSS influence and predicted arrival of CME from Sept 01.
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# Solar Influences Data analysis Center - RWC Belgium                #
# Royal Observatory of Belgium                                       #
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