3-day Solar-Geophysical Forecast issued Aug 07 22:00 UTC
Solar Activity Forecast: Solar activity is expected to be very low to low with C-class flares likely from Region 1093 and 1095 (S18E19). A chance of M-class activity is possible from Region 1093.
Geophysical Activity Forecast: Geomagnetic field activity is expected to be mostly quiet with an isolated chance of unsettled levels during the next three days (08 - 10 August). See: Today's Space Weather
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Solar flares are classified as A, B, C, M or X according to the peak flux (in watts per square meter, W/m2) of 100 to 800 picometer X-rays near Earth, as measured on the GOES−4 W/m2. Within a class there is a linear scale from 1 to 9, so an X2 flare is twice as powerful as an X1 flare, and is four times more powerful than an M5 flare. The more powerful M and X class flares are often associated with a variety of effects on the near-Earth space environment. Although the GOES classification is commonly used to indicate the size of a flare, it is only one measure. This extended logarithmic earthquakes show similar power-law[3]***
The whole sky was green, purple, I had a hard time deciding where to aim my cameras! Here are 3 pictures taken from a long series to make an animation of the movement. Nikon D3s , 10 000 ASA, 10.5 mm f2.8 set at full frame to get wider than the Dx format ! the last one was taken with a Nikon D3 with a 28mm f1.4 at 3200 ASA See: Aurora Photo Gallery 2010
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