PRESTO FROM SIDC - RWC BELGIUM Fri Jan 27 2012, 2030 UT

MAJOR FLARE OCCURRED-PROTON EVENT IN PROGRESS
NOAA AR 1402 produced a X1.7 flare on Jan. 27 peaking at 1837 UT. A proton event is in progress for protons from 10 to 50 Mev. 100 MeV protons flux is close to the threshold and might cross it within few hours. A halo has been observed with LASCO and COR2 coronagraphs (~1900 km/s on COR2 A). Due to the position of the AR, close to the limb, it is, at the moment, expected that the bulk of the CME will miss the Earth.