PRESTO ALERT

:Issued: 2012 May 17 0541 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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NOAA AR 1476 released an M5.1 flare peaking at 01:47 UT, as it rotated
over the west limb. The flare produced an ongoing proton event with 100
MeV protons exceeding the threshold of 1 pfu (and 10 MeV protons already
above 100 pfu). An associated CME was observed, travelling towards the
west, it's not expected to arrive to Earth (although we may see the
shock). Also type II radio bursts were detected.

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