AuroraMeteo
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G1Peak 23 April 2007 at 03:00 UTC

Northern Lights on 23 April 2007 (Kp 5): Where They Were Visible

Kp reached 5. At that level the edge of the auroral oval reaches about 56.5° magnetic latitude, so the aurora could be seen low on the horizon down to roughly 52.0°. Activity stayed at storm level (Kp 5 or more) for 3 hours.

03579 G1 G3 Sun 22 Apr 03:00 UTC · Kp 2.33 Sun 22 Apr 06:00 UTC · Kp 1.33 Sun 22 Apr 09:00 UTC · Kp 2.00 Sun 22 Apr 12:00 UTC · Kp 2.00 Sun 22 Apr 15:00 UTC · Kp 2.67 Sun 22 Apr 18:00 UTC · Kp 2.67 Sun 22 Apr 21:00 UTC · Kp 2.67 Mon 23 Apr 00:00 UTC · Kp 4.00 Mon 23 Apr 03:00 UTC · Kp 5.00 Mon 23 Apr 06:00 UTC · Kp 4.33 Mon 23 Apr 09:00 UTC · Kp 1.33 Mon 23 Apr 12:00 UTC · Kp 0.67 Mon 23 Apr 15:00 UTC · Kp 1.33 Mon 23 Apr 18:00 UTC · Kp 0.33 Mon 23 Apr 21:00 UTC · Kp 0.33 Tue 24 Apr 00:00 UTC · Kp 1.33 Tue 24 Apr 03:00 UTC · Kp 0.67 Mon 23 AprTue 24 Apr
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

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

CountryPlacesExamplesFurthest from the pole
United States 363 Seattle, Milwaukee, Minneapolis, Saint Paul Yakima
Canada 358 Toronto, Montreal, Calgary, Ottawa Hamilton
Greenland 4 Nuuk, Sisimiut, Qaqortoq, Kangerlussuaq Qaqortoq
New Zealand 4 Invercargill, Gore, Stewart Island/Rakiura (Oban), The Catlins (Owaka) Gore
Based on each place's Kp threshold (terrain included) and the Sun's position during each 3-hour Kp block.

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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