And here's an article I posted to the AAAP listserver:

Hi all,

Just came back home from Wagman. Incredible aurora activity tonight! When I got there at 3:00am, the aurora was a dim greenish background glow low above the north horizon. It soon brightened, expanded, developed ray and arcs, etc. I'm not good at describing it and surely many people will post details to the list server :-)

The most surprising thing to me is the rapid pulsating of aurora. The aurora was huge around 4am, reaching from the north horizon to zenith, and NW to NE. This part of the sky would pulsate at a frequency of about 2 to 3 times a second, alternating dark and bright areas, like ripples on river. The pulsating (and the aurora) lasted till dawn. Also the shape of the aurora would change within 10 seconds, it's all very quick.

This is my first time seeing aurora... I was so excited it totally ruined my perseids observation :-) A dozen perseids actually shot through the aurora which was quite impressive. One meteor was so bright it cast people's shadow on the observatory wall. Oh yes, the aurora for a while (around 4:30am) was also bright enough to cast shadows on the ground.

Then the fog came... Everything is wet and only the brightest stars were visible. But the aurora was still visible through the dense fog. So was the pulsating.

For those of you who didn't see it... Tom and I took several photos. And here's a primitive sketch I drew:

2000/8/12 4:40 EDT Aurora from Wagman