WEEKEND AURORAS "I have never seen such vibrant purples before,"

WEEKEND AURORAS: It has been a good weekend for northern sky watchers. A solar wind stream hit Earth's magnetic field on Saturday, sparking two days of auroras around the Arctic Circle. In Alberta, Canada, this morning, the month of May began with a psychedelic sky:

"I have never seen such vibrant purples before," says photographer Zoltan Kenwell of White Court, Alberta. "Cloud cover made me miss a lot of the display, but what I did get --WOW! This was a full weekend!"

High-latitude sky watchers should remain alert for auroras. The solar wind continues to blow at high speed, and NOAA forecasters estimate a 50% chance of more geomagnetic activity during the next 24 hours. Aurora alerts: phone, text.

more images: from Shawn Malone of Marquette, Michigan; from Janusz Jakub Kuc of Co. Donegal, Ireland; from Olivier Du Tre of Cochrane, Alberta, Canada; from Zoltan Kenwell of Edmonton, Alberta, Canada; from Steve Milner of Ft St John, British Columbia, Canada; from Paul Klauninger of Ottawa, Ontario, Canada; from Yasser Maghsoudi of Chochrane, Alberta, Canada;