Summary: A dense interplanetary shock wave struck Earth's magnetosphere on June 18th and triggered a G2-class geomagnetic storm. The disturbance began its journey toward Earth last Friday when a coronal mass ejection (CME) billowed away from the Sun. Although that CME was not Earth-directed, the expanding cloud generated a "bow shock" as it plowed through the gaseous interplanetary medium, and that bow shock struck our planet's magnetic field.

Unless otherwise stated, all images are copyrighted by the photographers.
Submit your images.

	Photographer, Location	Images	Comments
	Mark L. Koopsen, Hamilton, Washington, USA	#1	M. Koopsen: "We were quite surprised at the blue colors!" Photo details: Cannon 28mm 1.8 lens, 200asa color print. One minute exposure. June 19, 2001, 1am PDT
	Wade and Judy Clark, Hamilton, Washington, USA	#1, #2, #3, #4	W. Clark: "The auroras were visible even in relatively bright twilight. It was a lovely display!" Photo details: 28mm f1.8 wide angle lens, Fuji NHG II 800 speed color negative film, 30 second exposures. June 17-18, 2001, 10:45pm - 1am PDT
	Dominic Cantin, Quebec, Canada	#1, #2, #3, #4, #5, more	Photo details: fuji superia 800 film, 28mm, f2.8, 25 second exposures. June 18, 2001, 0400 -0700 UT