Solar Activity Level -- HIGH -- registrata dal Satellite SOHO una tempesta geomagnetica di classe X in direzione della Terra, arrivo previsto tra il 9 e il 10 gennaio. Possibili blackout e disturbi ai satelliti in orbita.

Top News of the Day: SWPC Forecasters are anticipating G3 (Strong) Geomagnetic Storm conditions to occur  on January 9 and 10.  The source of this disturbance is a fairly fast Earth-directed coronal  mass ejection (CME) launched from centrally-located Region 1944 at 1832 UTC (1:32 p.m.  EST) on January 7.  Full evaluation and modeling of this event has refined the forecast  and indicates a fairly direct interaction with Earth, with the WSA-Enlil model putting arrival  mid-morning UTC on January 9 (very early morning EST).  In addition, the S2 (Moderate)  Solar Radiation Storm associated with this event is currently near, but below, the S3  (Strong) threshold, with values leveling off at this time.  At the Sun, Region 1944 remains  well-placed and energetic.  Updates here as this event progresses.

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                                   fonte  NOAA/NWS Space Weather Prediction Center