There have been two large solar flares in the last few days.
Today's was the bigger of the two, and its effects are due to arrive at 2.57am Thursday morning.
Event Issue Date: 2011-02-15 05:47:44.0 GMT
CME Arrival Time: 2011-02-17 02:57:50.0 GMT
Arrival Time Confidence Level: ± 6 hours
Disturbance Duration: 6 hours
Disturbance Duration Confidence Level: ± 8 hours
Magnetopause Standoff Distance: 5.5 Re
Thu, 17 Feb 2011 02:57:50 GMT
Tuesday's solar flare disrupted some radio communications.
Arirang | Korea for the World, The World for Korea - Arirang.co.kr
Today's bigger flare is likely to do the same somewhere in the world, and can disrupt satellites and power supplies, so -
......be good little boy scouts and get your torches and candles out just in case.