A magnetic crochet is a ripple in Earths magnetic field caused by electrical currents flowing in air 60 km to 100 km above our heads. Unlike geomagnetic disturbances that arrive with CMEs days after a flare, a magnetic crochet occurs while the flare is in progress. They tend to occur during fast impulsive flares like this one. The explosion also hurled a CME into space: movie. The bulk of the CME is sailing north of the sun-Earth line, but there appears to be a faint Earth-directed component that could deliver a glancing blow to our planets magnetic field on April 1-2. spaceweather
Posted on: Sun, 30 Mar 2014 22:41:13 +0000
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