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G2Peak 6 August 1991 at 00:00 UTC

Northern Lights on 6 August 1991 (Kp 6): Where They Were Visible

Kp reached 6. At that level the edge of the auroral oval reaches about 54.5° magnetic latitude, so the aurora could be seen low on the horizon down to roughly 50.0°. Activity stayed at storm level (Kp 5 or more) for 9 hours.

03579 G1 G3 Sun 4 Aug 21:00 UTC · Kp 4.00 Mon 5 Aug 00:00 UTC · Kp 4.00 Mon 5 Aug 03:00 UTC · Kp 5.33 Mon 5 Aug 06:00 UTC · Kp 3.67 Mon 5 Aug 09:00 UTC · Kp 4.00 Mon 5 Aug 12:00 UTC · Kp 4.00 Mon 5 Aug 15:00 UTC · Kp 2.67 Mon 5 Aug 18:00 UTC · Kp 4.33 Mon 5 Aug 21:00 UTC · Kp 5.33 Tue 6 Aug 00:00 UTC · Kp 6.00 Tue 6 Aug 03:00 UTC · Kp 5.00 Tue 6 Aug 06:00 UTC · Kp 4.33 Tue 6 Aug 09:00 UTC · Kp 4.00 Tue 6 Aug 12:00 UTC · Kp 4.00 Tue 6 Aug 15:00 UTC · Kp 3.33 Tue 6 Aug 18:00 UTC · Kp 3.00 Tue 6 Aug 21:00 UTC · Kp 2.00 Wed 7 Aug 00:00 UTC · Kp 3.00 Wed 7 Aug 03:00 UTC · Kp 5.33 Mon 5 AugTue 6 AugWed 7 Aug
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

1,903 towns on our list had enough activity while it was dark there. Cloud cover is not included.

CountryPlacesExamplesFurthest from the pole
United States 509 Milwaukee, Minneapolis, Cleveland, Saint Paul Youngstown
Canada 388 Toronto, Montreal, Calgary, Ottawa Eastern Passage
United Kingdom 345 Glasgow, Manchester, Leeds, Edinburgh Manchester
Sweden 139 Stockholm, Gothenburg, Malmö, Uppsala Trelleborg
Finland 104 Helsinki, Espoon keskus, Tampere urban area, Vantaa Raseborg
Denmark 94 Copenhagen, Aarhus, Odense, Aalborg Nykøbing Falster
Poland 64 Gdańsk, Gdynia, Olsztyn, Elbląg Chojnice
Norway 59 Oslo, Bergen, Trondheim, Stavanger Mandal
Germany 56 Kiel, Lübeck, Rostock, Flensburg Norderstedt
Latvia 39 Riga, Daugavpils, Liepāja, Jelgava Daugavpils
Ireland 37 Dublin, Galway, Tallaght, Drogheda Dublin
Lithuania 28 Kaunas, Klaipeda City Municipality, Šiauliai, Panevėžys Druskininkai
Estonia 21 Tallinn, Tartu, Narva, Pärnu Võru
Iceland 10 Reykjavík, Kópavogur, Hafnarfjörður, Reykjanesbær Vík í Mýrdal
Faroe Islands 4 Tórshavn, Klaksvík, Fuglafjørður, Miðvágur Tórshavn
New Zealand 4 Invercargill, Gore, Stewart Island/Rakiura (Oban), The Catlins (Owaka) Gore
Greenland 1 Qaqortoq Qaqortoq
Kazakhstan 1 Petropavl Petropavl
Based on each place's Kp threshold (terrain included) and the Sun's position during each 3-hour Kp block.

Only in photos

3,044 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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