We drove a few miles to a dark spot, after the POES Northern Hemisphere map flared to a level-10.
We got a long, HUGE display around aproximately 11:30 to 12:30, MDT; south-western South Dakota. Started with a large 'rainbowish' milky arc feon NNW-NE, and rising to about 15-20 deg at its highest...then it broke into rays, pillars, and curtains. Lots of pulsing & flaring. THEN it suddenly flared from almost due west to beyond the spot on the horizon under Mars, and extended clear to zenith.
Mostly silvery-greenish, with some darker reds & purples.
I wouldn't be surprised if they were visible in Oklahoma & Arizona, since they were so hugely bright, and so high in our sky
Whole experience was enhanced by several meteors, and a long lsating, large, slow, spark-spitting fireball.
It is still flaring visibly even here in town.
We got a long, HUGE display around aproximately 11:30 to 12:30, MDT;
please, Please, PLEASE post pics if you can, for those of us marooned in the Southern US !!
"Northern Lights, and Minnesota Nights,
Keep Runnin' Through My Mind!"