By Rod Hill on 2010-03-19
NORTHERN LIGHTS: Arctic sky watchers are waiting for the CME to hit. A coronal mass ejection that left the sun on March 14th should deliver a glancing blow to Earth's magnetic field sometime today. NOAA forecasters estimate a 30% chance of geomagnetic activity when the cloud arrives.
There is a slight possibility of some auroras activities for the Pacific NW region tonight and Friday night. The K index indicates some active auroras are possible after sunset and before midnight. Best bet is to take a digital camera on a tripod and take 3 to 5 seconds exposures towards the northern horizon. If the picture shows some shades of green to red curtain-like images, chances are the auroras are active.
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