AuroraMeteo
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G4Peak 22 September 1999 at 21:00 UTC

Northern Lights on 22 September 1999 (Kp 8): Where They Were Visible

Kp reached 8. At that level the edge of the auroral oval reaches about 50.5° magnetic latitude, so the aurora could be seen low on the horizon down to roughly 46.0°. Activity stayed at storm level (Kp 5 or more) for 15 hours.

03579 G1 G3 Tue 21 Sept 12:00 UTC · Kp 3.33 Tue 21 Sept 15:00 UTC · Kp 2.00 Tue 21 Sept 18:00 UTC · Kp 3.33 Tue 21 Sept 21:00 UTC · Kp 3.67 Wed 22 Sept 00:00 UTC · Kp 3.00 Wed 22 Sept 03:00 UTC · Kp 2.00 Wed 22 Sept 06:00 UTC · Kp 2.00 Wed 22 Sept 09:00 UTC · Kp 2.67 Wed 22 Sept 12:00 UTC · Kp 5.00 Wed 22 Sept 15:00 UTC · Kp 3.67 Wed 22 Sept 18:00 UTC · Kp 6.00 Wed 22 Sept 21:00 UTC · Kp 8.00 Thu 23 Sept 00:00 UTC · Kp 6.33 Thu 23 Sept 03:00 UTC · Kp 6.00 Thu 23 Sept 06:00 UTC · Kp 3.33 Thu 23 Sept 09:00 UTC · Kp 1.33 Thu 23 Sept 12:00 UTC · Kp 1.00 Thu 23 Sept 15:00 UTC · Kp 2.00 Thu 23 Sept 18:00 UTC · Kp 2.00 Thu 23 Sept 21:00 UTC · Kp 2.00 Fri 24 Sept 00:00 UTC · Kp 1.33 Fri 24 Sept 03:00 UTC · Kp 2.00 Wed 22 SeptThu 23 SeptFri 24 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

3,901 towns on our list had enough activity while it was dark there. Cloud cover is not included.

CountryPlacesExamplesFurthest from the pole
United States 1,193 Chicago, Seattle, Boston, Portland Pittsburgh
United Kingdom 710 London, Birmingham, Glasgow, Manchester Falmouth
Canada 407 Toronto, Montreal, Calgary, Ottawa Eastern Passage
Germany 391 Berlin, Hamburg, Köln, Düsseldorf Bad Homburg vor der Höhe
Poland 284 Warsaw, Wrocław, Łódź, Poznań Rzeszów
Sweden 148 Stockholm, Gothenburg, Malmö, Uppsala Trelleborg
Netherlands 147 Rotterdam, Amsterdam, The Hague, Utrecht Maastricht
Finland 123 Helsinki, Espoon keskus, Tampere urban area, Vantaa Raseborg
Belgium 101 Brussels, Antwerp, Ghent, Charleroi Charleroi
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
Estonia 21 Tallinn, Tartu, Narva, Pärnu Võru
France 21 Lille, Roubaix, Tourcoing, Dunkirk Maubeuge
Iceland 18 Reykjavík, Kópavogur, Hafnarfjörður, Reykjanesbær Vík í Mýrdal
Czechia 12 Liberec, Hradec Králové, Ústí nad Labem, Most Hradec Králové
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
Kazakhstan 4 Astana, Kostanay, Petropavl, Kokshetau Astana
Ukraine 2 Kyiv, Kharkiv Kharkiv
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

2,348 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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