G3Peak 9 June 1991 at 00:00 UTC

Northern Lights on 9 June 1991 at 00:00 UTC (Kp 6.7): Where They Were Visible

Kp reached 6.7. At that level the edge of the auroral oval reaches about 53.2° magnetic latitude, so the aurora could be seen low on the horizon down to roughly 48.7°. Activity stayed at storm level (Kp 5 or more) for 12 hours.

Kp 0–3 Kp 4 Kp 5–6 (G1–G2) Kp 7+ (G3+) Times in UTC; faded bars are forecasts.

Three-hourly Kp from GFZ, one day either side of the storm.

Where the aurora could be seen

3,424 towns on our list had enough activity while it was dark there. Cloud cover is not included.

Based on each place's Kp threshold (terrain included) and the Sun's position during each 3-hour Kp block.
Country	Places	Examples	Furthest from the pole
United States	1,587	Boston, Detroit, Milwaukee, Minneapolis	Providence
Canada	830	Toronto, Montreal, Calgary, Ottawa	Yarmouth
United Kingdom	811	Glasgow, Manchester, Sheffield, Leeds	Nottingham
Ireland	120	Dublin, Limerick, Galway, Tallaght	Kilkenny
Germany	29	Bremen, Kreisfreie Stadt Oldenburg, Bremerhaven, Wilhelmshaven	Bremen
Australia	20	Hobart, Launceston, Devonport, Burnie	Smithton
New Zealand	18	Dunedin, Invercargill, Mosgiel, Wānaka	Waimate
Netherlands	8	Groningen, Leeuwarden, Drachten, Sneek	Drachten
Kazakhstan	1	Petropavl	Petropavl

Only in photos

4,551 more towns could have caught a faint red or green glow low on the horizon with a phone or camera.

Whether the aurora was actually seen also depended on the weather. Use this as a guide to where it was possible.

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