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G4Peak 11 September 2005 at 06:00 UTC

Northern Lights on 11 September 2005 (Kp 7.7): Where They Were Visible

Kp reached 7.7. At that level the edge of the auroral oval reaches about 51.2° magnetic latitude, so the aurora could be seen low on the horizon down to roughly 46.7°. Activity stayed at storm level (Kp 5 or more) for 69 hours.

03579 G1 G3 Fri 9 Sept 15:00 UTC · Kp 4.33 Fri 9 Sept 18:00 UTC · Kp 4.33 Fri 9 Sept 21:00 UTC · Kp 3.33 Sat 10 Sept 00:00 UTC · Kp 2.33 Sat 10 Sept 03:00 UTC · Kp 2.67 Sat 10 Sept 06:00 UTC · Kp 4.00 Sat 10 Sept 09:00 UTC · Kp 3.33 Sat 10 Sept 12:00 UTC · Kp 4.00 Sat 10 Sept 15:00 UTC · Kp 5.67 Sat 10 Sept 18:00 UTC · Kp 5.33 Sat 10 Sept 21:00 UTC · Kp 5.00 Sun 11 Sept 00:00 UTC · Kp 6.33 Sun 11 Sept 03:00 UTC · Kp 7.00 Sun 11 Sept 06:00 UTC · Kp 7.67 Sun 11 Sept 09:00 UTC · Kp 6.33 Sun 11 Sept 12:00 UTC · Kp 7.00 Sun 11 Sept 15:00 UTC · Kp 5.33 Sun 11 Sept 18:00 UTC · Kp 6.00 Sun 11 Sept 21:00 UTC · Kp 4.67 Mon 12 Sept 00:00 UTC · Kp 4.67 Mon 12 Sept 03:00 UTC · Kp 4.33 Mon 12 Sept 06:00 UTC · Kp 7.00 Mon 12 Sept 09:00 UTC · Kp 5.67 Mon 12 Sept 12:00 UTC · Kp 4.67 Mon 12 Sept 15:00 UTC · Kp 6.00 Mon 12 Sept 18:00 UTC · Kp 6.00 Mon 12 Sept 21:00 UTC · Kp 7.00 Tue 13 Sept 00:00 UTC · Kp 5.67 Tue 13 Sept 03:00 UTC · Kp 4.67 Tue 13 Sept 06:00 UTC · Kp 4.00 Tue 13 Sept 09:00 UTC · Kp 6.00 Tue 13 Sept 12:00 UTC · Kp 5.67 Tue 13 Sept 15:00 UTC · Kp 2.00 Tue 13 Sept 18:00 UTC · Kp 4.67 Tue 13 Sept 21:00 UTC · Kp 3.67 Wed 14 Sept 00:00 UTC · Kp 3.33 Wed 14 Sept 03:00 UTC · Kp 2.67 Wed 14 Sept 06:00 UTC · Kp 4.00 Wed 14 Sept 09:00 UTC · Kp 3.33 Wed 14 Sept 12:00 UTC · Kp 4.00 Wed 14 Sept 15:00 UTC · Kp 3.33 Wed 14 Sept 18:00 UTC · Kp 3.33 Sat 10 SeptSun 11 SeptMon 12 SeptTue 13 SeptWed 14 Sept
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

3,695 towns on our list had enough activity while it was dark there. Cloud cover is not included.

CountryPlacesExamplesFurthest from the pole
United States 1,698 New York City, Brooklyn, Chicago, Queens Lexington
United Kingdom 504 Birmingham, Glasgow, Manchester, Sheffield Luton
Canada 407 Toronto, Montreal, Calgary, Ottawa Eastern Passage
Germany 165 Berlin, Hamburg, Bremen, Hannover Kreisfreie Stadt Münster
Poland 163 Warsaw, Poznań, Gdańsk, Szczecin Zielona Góra
Sweden 148 Stockholm, Gothenburg, Malmö, Uppsala Trelleborg
Finland 123 Helsinki, Espoon keskus, Tampere urban area, Vantaa Raseborg
Netherlands 99 Rotterdam, Amsterdam, The Hague, Utrecht Rotterdam
Denmark 94 Copenhagen, Aarhus, Odense, Aalborg Nykøbing Falster
Norway 77 Oslo, Bergen, Trondheim, Stavanger Mandal
Ireland 55 Dublin, Cork, Limerick, Galway Cork
Latvia 39 Riga, Daugavpils, Liepāja, Jelgava Daugavpils
Lithuania 31 Vilnius, Kaunas, Klaipeda City Municipality, Šiauliai Druskininkai
New Zealand 23 Christchurch, Wellington, Dunedin, Invercargill Wellington
Estonia 21 Tallinn, Tartu, Narva, Pärnu Võru
Iceland 18 Reykjavík, Kópavogur, Hafnarfjörður, Reykjanesbær Vík í Mýrdal
Australia 15 Melbourne, Geelong, Hobart, Ballarat Ballarat
Greenland 6 Nuuk, Sisimiut, Ilulissat, Qaqortoq Qaqortoq
Faroe Islands 4 Tórshavn, Klaksvík, Fuglafjørður, Miðvágur Tórshavn
Kazakhstan 4 Astana, Kostanay, Petropavl, Kokshetau Astana
China 1 Mohe Mohe
Based on each place's Kp threshold (terrain included) and the Sun's position during each 3-hour Kp block.

Only in photos

2,541 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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