(Portland, OR) -- The Northern Lights could make another appearance over Oregon tonight if the skies are clear. A solar flare has sent energy toward Earth that could cause KP levels between 6 and 7. That can push the aurora borealis farther south. Skies are expected to be cloudy over the Willamette Valley, but in Central Oregon skies will be partly cloudy and it might be possible to see. Several residents reported seeing the lights last night around sunset.