About 15 states could catch a glimpse of the aurora borealis on Aug. 9, according to the latest forecast from the National Oceanic and Atmospheric Administration's Space Weather Prediction Center.

An earlier forecast for Friday, Aug. 8, showed a possibility of seeing the aurora in about 18 states was downgraded to a lesser event shorter before 8 a.m. ET.

A coronal mass ejection , or large expulsions of plasma and magnetic field from the sun, lifted off the star on Aug. 5, raising expectations to cause geomagnetic activity, according to NOAA.

For Aug. 9, NOAA said it predicts a geomagnetic K-index of 5. The K-index measures geomagnetic activity and indicates how far away from the poles the northern lights could be visible, according to the agency. A Kp score between 3-5 indicates b

See Full Page