A filament eruption near end-of-day September 27th resulted in a brief S1 (Minor) radiation storm.
However, the Earth-directed coronal mass ejection (CME) associated with this event is en route and is expected to affect Earth mid to late day on September 30th (Eastern time), with storming continuing into the 1st.
"The sun erupted with a wide, Earth-directed coronal mass ejection (CME) on Sept. 27, 2012 at 10:25 p.m. EDT" we read on NASA's website.
"CMEs are a phenomenon that can send billions of tons of solar particles into space that can reach Earth one to three days later, affecting electronic systems in satellites and on the ground. Experimental NASA research models estimate that the CME is traveling at around 700 miles per second and will reach Earth on Sept. 29."
"The CME is associated with a fairly small solar flare that was measured as C-class, which is third in strength after X- and M-class flares. The flare peaked at 7 p.m. EDT and came from an active region on the sun labeled AR 1577."
Click on image to enlarge CME Prediction Model
Click on image to enlarge
Geomagnetic storm levels reaching the G2 (Moderate) level are possible for both days. The full moon may make viewing the aurora more difficult, but high latitude aurora watchers should be on the lookout during that time, nonetheless.
"We don't really know what gets these CMEs going," says Terry Kucera, a solar scientist at NASA's Goddard Space Flight Center in Greenbelt, Md. recently.
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