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G1Peak 18 June 2012 at 03:00 UTC

Northern Lights on 18 June 2012 (Kp 5.3): Where They Were Visible

Kp reached 5.3. At that level the edge of the auroral oval reaches about 55.8° magnetic latitude, so the aurora could be seen low on the horizon down to roughly 51.3°. Activity stayed at storm level (Kp 5 or more) for 3 hours.

03579 G1 G3 Sun 17 Jun 03:00 UTC · Kp 3.33 Sun 17 Jun 06:00 UTC · Kp 5.33 Sun 17 Jun 09:00 UTC · Kp 6.00 Sun 17 Jun 12:00 UTC · Kp 6.00 Sun 17 Jun 15:00 UTC · Kp 4.00 Sun 17 Jun 18:00 UTC · Kp 4.33 Sun 17 Jun 21:00 UTC · Kp 4.00 Mon 18 Jun 00:00 UTC · Kp 4.33 Mon 18 Jun 03:00 UTC · Kp 5.33 Mon 18 Jun 06:00 UTC · Kp 3.00 Mon 18 Jun 09:00 UTC · Kp 2.00 Mon 18 Jun 12:00 UTC · Kp 2.33 Mon 18 Jun 15:00 UTC · Kp 2.00 Mon 18 Jun 18:00 UTC · Kp 1.33 Mon 18 Jun 21:00 UTC · Kp 1.00 Tue 19 Jun 00:00 UTC · Kp 0.00 Tue 19 Jun 03:00 UTC · Kp 0.33 Mon 18 JunTue 19 Jun
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

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

CountryPlacesExamplesFurthest from the pole
United States 448 Detroit, Milwaukee, Minneapolis, Saint Paul Cedar Rapids
Canada 322 Toronto, Montreal, Calgary, Ottawa LaSalle
Based on each place's Kp threshold (terrain included) and the Sun's position during each 3-hour Kp block.

Only in photos

1,038 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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