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G2Peak 28 September 1991 at 18:00 UTC

Northern Lights on 28 September 1991 (Kp 5.7): Where They Were Visible

Kp reached 5.7. At that level the edge of the auroral oval reaches about 55.2° magnetic latitude, so the aurora could be seen low on the horizon down to roughly 50.7°. Activity stayed at storm level (Kp 5 or more) for 15 hours.

03579 G1 G3 Fri 27 Sept 03:00 UTC · Kp 5.67 Fri 27 Sept 06:00 UTC · Kp 5.00 Fri 27 Sept 09:00 UTC · Kp 5.00 Fri 27 Sept 12:00 UTC · Kp 5.00 Fri 27 Sept 15:00 UTC · Kp 5.33 Fri 27 Sept 18:00 UTC · Kp 5.00 Fri 27 Sept 21:00 UTC · Kp 3.33 Sat 28 Sept 00:00 UTC · Kp 4.33 Sat 28 Sept 03:00 UTC · Kp 5.00 Sat 28 Sept 06:00 UTC · Kp 4.00 Sat 28 Sept 09:00 UTC · Kp 4.67 Sat 28 Sept 12:00 UTC · Kp 5.00 Sat 28 Sept 15:00 UTC · Kp 3.67 Sat 28 Sept 18:00 UTC · Kp 5.67 Sat 28 Sept 21:00 UTC · Kp 4.67 Sun 29 Sept 00:00 UTC · Kp 3.33 Sun 29 Sept 03:00 UTC · Kp 2.33 Sun 29 Sept 06:00 UTC · Kp 1.67 Sun 29 Sept 09:00 UTC · Kp 3.00 Sun 29 Sept 12:00 UTC · Kp 3.33 Sun 29 Sept 15:00 UTC · Kp 4.00 Sun 29 Sept 18:00 UTC · Kp 4.00 Sun 29 Sept 21:00 UTC · Kp 4.00 Sat 28 SeptSun 29 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

1,467 towns on our list had enough activity while it was dark there. Cloud cover is not included.

CountryPlacesExamplesFurthest from the pole
United States 368 Seattle, Milwaukee, Minneapolis, Saint Paul Yakima
Canada 359 Toronto, Montreal, Calgary, Ottawa Hamilton
United Kingdom 169 Glasgow, Edinburgh, Belfast, Newcastle upon Tyne Middlesbrough
Sweden 148 Stockholm, Gothenburg, Malmö, Uppsala Trelleborg
Finland 123 Helsinki, Espoon keskus, Tampere urban area, Vantaa Raseborg
Denmark 93 Copenhagen, Aarhus, Odense, Aalborg Nakskov
Norway 77 Oslo, Bergen, Trondheim, Stavanger Mandal
Latvia 39 Riga, Daugavpils, Liepāja, Jelgava Daugavpils
Lithuania 25 Kaunas, Klaipeda City Municipality, Šiauliai, Panevėžys Kaunas
Estonia 21 Tallinn, Tartu, Narva, Pärnu Võru
Iceland 18 Reykjavík, Kópavogur, Hafnarfjörður, Reykjanesbær Vík í Mýrdal
New Zealand 7 Dunedin, Invercargill, Mosgiel, Gore Oamaru
Greenland 6 Nuuk, Sisimiut, Ilulissat, Qaqortoq Qaqortoq
Australia 5 Hobart, Launceston, Bruny Island (Alonnah), Southport / Cockle Creek Launceston
Faroe Islands 4 Tórshavn, Klaksvík, Fuglafjørður, Miðvágur Tórshavn
Ireland 2 Letterkenny, Sligo Sligo
Germany 1 Westerland Westerland
Kazakhstan 1 Petropavl Petropavl
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

1,901 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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