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G2Peak 12 October 2021 at 09:00 UTC

Northern Lights on 12 October 2021 (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 15 hours.

03579 G1 G3 Mon 11 Oct 00:00 UTC · Kp 3.33 Mon 11 Oct 03:00 UTC · Kp 3.33 Mon 11 Oct 06:00 UTC · Kp 2.67 Mon 11 Oct 09:00 UTC · Kp 2.00 Mon 11 Oct 12:00 UTC · Kp 2.67 Mon 11 Oct 15:00 UTC · Kp 1.33 Mon 11 Oct 18:00 UTC · Kp 3.33 Mon 11 Oct 21:00 UTC · Kp 3.67 Tue 12 Oct 00:00 UTC · Kp 5.00 Tue 12 Oct 03:00 UTC · Kp 6.00 Tue 12 Oct 06:00 UTC · Kp 4.67 Tue 12 Oct 09:00 UTC · Kp 6.33 Tue 12 Oct 12:00 UTC · Kp 4.67 Tue 12 Oct 15:00 UTC · Kp 4.33 Tue 12 Oct 18:00 UTC · Kp 3.33 Tue 12 Oct 21:00 UTC · Kp 3.33 Wed 13 Oct 00:00 UTC · Kp 3.33 Wed 13 Oct 03:00 UTC · Kp 2.00 Wed 13 Oct 06:00 UTC · Kp 0.67 Wed 13 Oct 09:00 UTC · Kp 0.00 Wed 13 Oct 12:00 UTC · Kp 0.33 Mon 11 OctTue 12 OctWed 13 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

2,532 towns on our list had enough activity while it was dark there. Cloud cover is not included.

CountryPlacesExamplesFurthest from the pole
United States 1,112 Chicago, Seattle, Portland, Detroit Pittsburgh
Canada 407 Toronto, Montreal, Calgary, Ottawa Eastern Passage
United Kingdom 345 Glasgow, Manchester, Leeds, Edinburgh Manchester
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
Norway 77 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
Estonia 21 Tallinn, Tartu, Narva, Pärnu Võru
Iceland 18 Reykjavík, Kópavogur, Hafnarfjörður, Reykjanesbær Vík í Mýrdal
Lithuania 18 Klaipeda City Municipality, Šiauliai, Panevėžys, Mažeikiai Utena
New Zealand 17 Christchurch, Dunedin, Invercargill, Rolleston Rangiora
Australia 7 Hobart, Launceston, Devonport, Burnie Burnie
Greenland 6 Nuuk, Sisimiut, Ilulissat, Qaqortoq Qaqortoq
Faroe Islands 4 Tórshavn, Klaksvík, Fuglafjørður, Miðvágur Tórshavn
Poland 2 Świnoujście, Wolin Wolin
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

1,703 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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