PRESTO ALERT

:Issued: 2025 May 17 1108 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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The global geomagnetic conditions have escalated to moderate storm levels
(NOAA Kp  6+ ) between 00:00 and 03:00 UTC on May 17 and are currently at
unsettled levels (NOAA Kp 3). The geomagnetic conditions locally have
reached active conditions (K BEL 4) between 00:00 and 08:00 UTC on May 17.
The geomagnetic storm was most likely the result of a glancing blow
arrival, associated with the Coronal Mass Ejection (CME) observed around
23:00 UTC on May 12. Further minor to moderate storm conditions are
possible in the upcoming hours.
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# Solar Influences Data analysis Center - RWC Belgium                #
# Royal Observatory of Belgium                                       #
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