Aurora Borealis in Circle, Alaska on March 1, 2011

Northern Lights Alaska Circle 2011Aurora Borealis over Circle, Alaska at 3:30 AM on March 1, 2011

Aurora Borealis Alaska Circle 20113:33 AM

Alaska Aurora Borealis Yukon 2011       Aurora Borealis Alaska Yukon 2011
3:36 AM: 16 and 21 sec. exposures at f/2.8 ISO 800

Aurora Borealis Alaska Lights 2011
3:39 AM

Aurora Borealis Corona Alaska 2011
Corona at 1:09 AM

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The Northern Lights
at the Yukon

Location: Yukon River, Circle, AK
Latitude: 6549'
Camera: Canon EOS 5D Mark II
Lens: EF 14mm f/2.8L

Sky watchers at high latitudes witnessed the most active Northern Lights in many years with the anticipated onset of a high speed coronal wind stream combined with a southward pointing interplanetary magnetic field (IMF). The disturbance produced long periods of minor to major geomagnetic storm conditions and colorful auroras between 12:00-17:00 UTC on March 1, 2011.