Photos: Northern Lights Glow Over Colorado, Light Up Twitter

Aurora and other parts of Colorado enjoyed the Aurora borealis last night.

Aurora borealis puts on dazzling show in Colorado sky #northernlights http://t.co/7oRJeVGmqq pic.twitter.com/hGxZ4bGP2D

— KDVR FOX31 Denver (@KDVR) June 23, 2015

This is what the last G3/Kp7-8 #solarstorm brought to SW Colorado March 17 2015 #cowx #aurora #northernlights pic.twitter.com/LJDEwKjtdY

— Derick Wilson (@TheUmno) June 21, 2015

The colorful northern lights occur when cosmic rays, solar wind or plasma ejections from the sun hit the earth's magnetic upper atmosphere, according to the Space Weather Prediction Center in Boulder, Colorado.

The Northern Lights over the Book Cliffs @Colorado @VisitGJ @WxMikeEverett @MattMakens247Wx @picsofcolorado pic.twitter.com/p0e4zzZGad

— JTDudrow Photography (@DRowPhotography) June 23, 2015

That same agency says last night storm was considered "severe" and ranked it a 4 on a 5-point scale. The scientists predict another solar storm for Wednesday night into Thursday morning with the possibility of another light show.

"This timing bodes well for aurora watchers in North America," the agency says in a press statement.