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GEOMAGNETIC STORM WATCH: Minor G1-class geomagnetic storms are possible on May 11th when a coronal mass ejection (CME) grazes Earth's magnetic field. The source of the CME is big sunspot AR2740, which propelled the solar storm cloud in our direction three days ago. Auroras could appear as far south as the US-Canadian border. Instant Aurora Alerts: SMS Text.ANOTHER SOLAR FLARE: May 9th began with a bang. Big sunspot AR2740 produced another solar flare, this time an impulsive C7-category explosion. Telescopes onboard NASA's Solar Dynamics Observatory captured the extreme ultraviolet flash:...
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