SOLAR STORM ELECTRICAL HAZARD MAPS: Power companies have long been wary of the sun. Why? Because solar superstorms can make your lights go out. A new map from the USGS shows places in the USA where a century-class storm could cause power outages. Find out if you're in the blackout zone on today's edition of Spaceweather.com.
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Above: Sprawling power lines can act like "solar storm antennas," picking up unwanted geoelectric currents and spreading the problem over a wide area.