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G2Peak 27 October 1991 at 00:00 UTC

Northern Lights on 27 October 1991 (Kp 6.3): Where They Were Visible

Kp reached 6.3. At that level the edge of the auroral oval reaches about 53.8° magnetic latitude, so the aurora could be seen low on the horizon down to roughly 49.3°. Activity stayed at storm level (Kp 5 or more) for 12 hours.

03579 G1 G3 Sat 26 Oct 00:00 UTC · Kp 4.33 Sat 26 Oct 03:00 UTC · Kp 3.67 Sat 26 Oct 06:00 UTC · Kp 4.33 Sat 26 Oct 09:00 UTC · Kp 3.67 Sat 26 Oct 12:00 UTC · Kp 5.00 Sat 26 Oct 15:00 UTC · Kp 4.33 Sat 26 Oct 18:00 UTC · Kp 4.33 Sat 26 Oct 21:00 UTC · Kp 4.33 Sun 27 Oct 00:00 UTC · Kp 6.33 Sun 27 Oct 03:00 UTC · Kp 5.33 Sun 27 Oct 06:00 UTC · Kp 5.00 Sun 27 Oct 09:00 UTC · Kp 4.67 Sun 27 Oct 12:00 UTC · Kp 4.00 Sun 27 Oct 15:00 UTC · Kp 4.33 Sun 27 Oct 18:00 UTC · Kp 5.00 Sun 27 Oct 21:00 UTC · Kp 5.33 Mon 28 Oct 00:00 UTC · Kp 5.33 Mon 28 Oct 03:00 UTC · Kp 5.33 Mon 28 Oct 06:00 UTC · Kp 4.67 Mon 28 Oct 09:00 UTC · Kp 6.33 Sat 26 OctSun 27 OctMon 28 Oct
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

2,778 towns on our list had enough activity while it was dark there. Cloud cover is not included.

CountryPlacesExamplesFurthest from the pole
United States 1,157 Chicago, Seattle, Boston, Detroit Pittsburgh
United Kingdom 414 Glasgow, Manchester, Sheffield, Leeds Nottingham
Canada 407 Toronto, Montreal, Calgary, Ottawa Eastern Passage
Sweden 148 Stockholm, Gothenburg, Malmö, Uppsala Trelleborg
Finland 123 Helsinki, Espoon keskus, Tampere urban area, Vantaa Raseborg
Denmark 94 Copenhagen, Aarhus, Odense, Aalborg Nykøbing Falster
Poland 90 Gdańsk, Szczecin, Bydgoszcz, Białystok Bydgoszcz
Germany 84 Hamburg, Bremen, Kiel, Lübeck Bremen
Norway 77 Oslo, Bergen, Trondheim, Stavanger Mandal
Ireland 49 Dublin, Limerick, Galway, Tallaght Kilkenny
Latvia 39 Riga, Daugavpils, Liepāja, Jelgava Daugavpils
Lithuania 31 Vilnius, Kaunas, Klaipeda City Municipality, Šiauliai Druskininkai
Estonia 21 Tallinn, Tartu, Narva, Pärnu Võru
Iceland 18 Reykjavík, Kópavogur, Hafnarfjörður, Reykjanesbær Vík í Mýrdal
Netherlands 7 Groningen, Leeuwarden, Drachten, Sneek Drachten
Greenland 6 Nuuk, Sisimiut, Ilulissat, Qaqortoq Qaqortoq
Faroe Islands 4 Tórshavn, Klaksvík, Fuglafjørður, Miðvágur Tórshavn
New Zealand 4 Invercargill, Gore, Stewart Island/Rakiura (Oban), The Catlins (Owaka) Gore
Australia 3 Hobart, Bruny Island (Alonnah), Southport / Cockle Creek Hobart
Kazakhstan 1 Kostanay Kostanay
Svalbard & Jan Mayen 1 Longyearbyen Longyearbyen
Based on each place's Kp threshold (terrain included) and the Sun's position during each 3-hour Kp block.

Only in photos

2,725 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.

← 26 October 1991 · 28 October 1991 →