| 48 hr MPEG | 48 hr MPEG |
| 48 hr MPEG | 48 hr MPEG |
| 48 hr MPEG | 48 hr MPEG |
| STEREO behind | STEREO ahead |
|---|---|
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Below are time-elongation plots built up from SECCHI running difference images, known colloquially by some as "J-plots". Coronal mass ejections (CMEs) are seen as diagonal bright and dark bands running from lower-left to upper-right. The steepness of the band reflects the speed of the CME. So an angle of 80 degrees would give us a CME speed of nearly 800km/sec; an angle of 50 degrees gives us a CME speed arround 300km/sec. Occasionally one can also see planets or bright stars as streaks in the plots.
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06:24
May
18
2013
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G2 - Moderate geomagnetic storm (Kp 6.00) - Observers at high latitudes may see some nice periods of visual aurora. The chances for the Middle latitude is still relatively low. |
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09:15
May
17
2013
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Strong M3.21 solar flare |
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22:09
May
16
2013
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Moderately strong M1.31 solar flare |