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Monday, July 23, 2012

Fast-moving CME blasted from solar surface - will more extreme weather follow?

July 23, 2012 – SPACE - A coronal mass ejection (CME) blasted away from the sun this morning with rare speed: 2900 km/s. CMEs moving this fast occur only once every 5 to 10 years. The Solar and Heliospheric Observatory recorded the cloud’s emergence on July 23rd starting around 0300 UT: The source of the CME was sunspot AR1520, which sparked many bright auroras earlier this month when it was on the Earthside of the sun. Now, however, the active region is transiting the sun’s farside, so this blast was not geoeffective. One can only imagine the geomagnetic storms such a fast CME could produce if it were heading our way. Stay tuned for additional analysis. –Space Weather

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