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G1Peak 23 April 2017 at 06:00 UTC

Northern Lights on 23 April 2017 (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 9 hours.

03579 G1 G3 Sat 22 Apr 06:00 UTC · Kp 5.00 Sat 22 Apr 09:00 UTC · Kp 5.00 Sat 22 Apr 12:00 UTC · Kp 5.00 Sat 22 Apr 15:00 UTC · Kp 4.67 Sat 22 Apr 18:00 UTC · Kp 3.67 Sat 22 Apr 21:00 UTC · Kp 5.33 Sun 23 Apr 00:00 UTC · Kp 4.00 Sun 23 Apr 03:00 UTC · Kp 4.00 Sun 23 Apr 06:00 UTC · Kp 5.33 Sun 23 Apr 09:00 UTC · Kp 4.33 Sun 23 Apr 12:00 UTC · Kp 5.00 Sun 23 Apr 15:00 UTC · Kp 4.67 Sun 23 Apr 18:00 UTC · Kp 4.00 Sun 23 Apr 21:00 UTC · Kp 4.33 Mon 24 Apr 00:00 UTC · Kp 3.33 Mon 24 Apr 03:00 UTC · Kp 4.00 Mon 24 Apr 06:00 UTC · Kp 3.33 Mon 24 Apr 09:00 UTC · Kp 3.67 Mon 24 Apr 12:00 UTC · Kp 2.00 Mon 24 Apr 15:00 UTC · Kp 3.33 Sun 23 AprMon 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

2,713 towns on our list had enough activity while it was dark there. Cloud cover is not included.

CountryPlacesExamplesFurthest from the pole
United States 1,527 Seattle, Detroit, Milwaukee, Minneapolis Cedar Rapids
Canada 886 Toronto, Montreal, Calgary, Ottawa LaSalle
Finland 195 Helsinki, Espoon keskus, Vantaa, Lahti Hanko
Estonia 65 Tallinn, Tartu, Narva, Pärnu Võru
New Zealand 18 Dunedin, Invercargill, Mosgiel, Wānaka Waimate
Latvia 12 Ventspils, Valmiera, Cēsis, Limbaži Cēsis
Australia 9 Hobart, Launceston, New Norfolk, Bellerive Launceston
Sweden 1 Visby Visby
Based on each place's Kp threshold (terrain included) and the Sun's position during each 3-hour Kp block.

Only in photos

2,717 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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