Those of you who live in the correct latitude may see Northern Lights this evening. Rose http://spaceweather.com/ AURORA ON HALLOWEEN? There is a slight (5 to 10%) chance of mid-latitude aurora on Halloween night. The waxing crescent Moon will sink below the horizon shortly after sunset, and many Trick-or-Treaters will be outdoors under dark skies. It's a good time to watch for faint Northern Lights.