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Solar storm was stronger than predicted

Jan. 25, 2012 at 1:38 PM   |   Comments

WASHINGTON, Jan. 25 (UPI) -- The solar storm that caused several days of intense geomagnetic activity in Earth's atmosphere was even stronger than originally predicted, U.S. officials said.

"Earlier, it was stated that the current Solar Radiation Storm was the largest since May 2005," an announcement from a National Oceanographic and Atmospheric Administration division said.

"After the arrival of the CME [coronal mass ejection] earlier today ... this is now the largest Solar Radiation Storm since October 2003 (The Halloween Storms)," NOAA's Space Weather Prediction Center said on its Facebook page.

On Sunday, a cluster of sunspots in an active region of the sun blasted a bubble of energized plasma -- composed mainly of high-energy protons -- in the general direction of Earth.

The blast -- known as a coronal mass ejection -- interacted with the Earth's magnetosphere beginning Tuesday, sparking a global geomagnetic storm.

Such storm can cause problems with satellite operation and radio communications, experts said.

"High latitude [radio] communications can be impacted," NASA solar physicist C. Alex Young told Discovery News.

"I have heard from colleagues that airlines have already had to reroute polar flights for up to two days because of communication blackouts at the poles."

© 2012 United Press International, Inc. All Rights Reserved. Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.
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