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G4Peak 22 October 1999 at 06:00 UTC

Northern Lights on 22 October 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 21 hours.

03579 G1 G3 Wed 20 Oct 21:00 UTC · Kp 0.67 Thu 21 Oct 00:00 UTC · Kp 3.33 Thu 21 Oct 03:00 UTC · Kp 5.00 Thu 21 Oct 06:00 UTC · Kp 2.00 Thu 21 Oct 09:00 UTC · Kp 2.00 Thu 21 Oct 12:00 UTC · Kp 1.67 Thu 21 Oct 15:00 UTC · Kp 3.00 Thu 21 Oct 18:00 UTC · Kp 3.33 Thu 21 Oct 21:00 UTC · Kp 4.67 Fri 22 Oct 00:00 UTC · Kp 7.00 Fri 22 Oct 03:00 UTC · Kp 7.67 Fri 22 Oct 06:00 UTC · Kp 8.00 Fri 22 Oct 09:00 UTC · Kp 5.33 Fri 22 Oct 12:00 UTC · Kp 4.67 Fri 22 Oct 15:00 UTC · Kp 4.33 Fri 22 Oct 18:00 UTC · Kp 5.67 Fri 22 Oct 21:00 UTC · Kp 3.33 Sat 23 Oct 00:00 UTC · Kp 4.00 Sat 23 Oct 03:00 UTC · Kp 4.67 Sat 23 Oct 06:00 UTC · Kp 3.33 Sat 23 Oct 09:00 UTC · Kp 2.67 Sat 23 Oct 12:00 UTC · Kp 5.33 Sat 23 Oct 15:00 UTC · Kp 5.00 Sat 23 Oct 18:00 UTC · Kp 4.33 Thu 21 OctFri 22 OctSat 23 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

4,049 towns on our list had enough activity while it was dark there. Cloud cover is not included.

CountryPlacesExamplesFurthest from the pole
United States 1,769 New York City, Brooklyn, Chicago, Queens Clarksville
United Kingdom 657 London, Birmingham, Glasgow, Manchester Basingstoke
Canada 407 Toronto, Montreal, Calgary, Ottawa Eastern Passage
Germany 261 Berlin, Hamburg, Essen, Dortmund Leipzig
Poland 177 Warsaw, Poznań, Gdańsk, Szczecin Kępno
Sweden 148 Stockholm, Gothenburg, Malmö, Uppsala Trelleborg
Netherlands 138 Rotterdam, Amsterdam, The Hague, Utrecht Venlo
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
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
Iceland 18 Reykjavík, Kópavogur, Hafnarfjörður, Reykjanesbær Vík í Mýrdal
New Zealand 11 Dunedin, Palmerston North, Invercargill, Masterton Palmerston North
Australia 7 Hobart, Launceston, Devonport, Burnie Burnie
Greenland 6 Nuuk, Sisimiut, Ilulissat, Qaqortoq Qaqortoq
Faroe Islands 4 Tórshavn, Klaksvík, Fuglafjørður, Miðvágur Tórshavn
Belgium 3 Turnhout, Knokke-Heist, Kapellen Turnhout
Kazakhstan 2 Kostanay, Petropavl 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

2,139 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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