From Spaceweather.com:
"Sunspot AR3234 exploded today, Feb. 28th at 1750 UTC, producing an M8.6-class solar flare, percentage points below X-class. NASA's Solar Dynamics Observatory recorded the extreme ultraviolet flash:
"An impulsive burst of X-rays ionized the top of Earth's atmosphere, causing a shortwave radio blackout over the Americas. Aviators and ham radio operators may have noticed loss of signal below 30 MHz for a half hour or more after the flare. Stay tuned for updates about a possible CME. Solar flare alerts: SMS Text.
"STRONG GEOMAGNETIC STORMS: One and perhaps two CMEs hit Earth's magnetic field on Feb. 26th and 27th, sparking a series of strong G3-class geomagnetic storms with auroras in both hemispheres."
Chris Campbell
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