AuroraMeteo
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G2Peak 13 December 1999 at 06:00 UTC

Northern Lights on 13 December 1999 (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 6 hours.

03579 G1 G3 Sun 12 Dec 03:00 UTC · Kp 2.67 Sun 12 Dec 06:00 UTC · Kp 0.67 Sun 12 Dec 09:00 UTC · Kp 2.00 Sun 12 Dec 12:00 UTC · Kp 1.33 Sun 12 Dec 15:00 UTC · Kp 3.00 Sun 12 Dec 18:00 UTC · Kp 3.67 Sun 12 Dec 21:00 UTC · Kp 3.33 Mon 13 Dec 00:00 UTC · Kp 4.00 Mon 13 Dec 03:00 UTC · Kp 4.67 Mon 13 Dec 06:00 UTC · Kp 5.67 Mon 13 Dec 09:00 UTC · Kp 4.00 Mon 13 Dec 12:00 UTC · Kp 3.67 Mon 13 Dec 15:00 UTC · Kp 3.33 Mon 13 Dec 18:00 UTC · Kp 1.33 Mon 13 Dec 21:00 UTC · Kp 0.33 Tue 14 Dec 00:00 UTC · Kp 1.33 Tue 14 Dec 03:00 UTC · Kp 1.00 Tue 14 Dec 06:00 UTC · Kp 0.67 Mon 13 DecTue 14 Dec
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

1,456 towns on our list had enough activity while it was dark there. Cloud cover is not included.

CountryPlacesExamplesFurthest from the pole
United States 578 Seattle, Detroit, Milwaukee, Minneapolis Cedar Rapids
Canada 388 Toronto, Montreal, Calgary, Ottawa LaSalle
Sweden 125 Stockholm, Gothenburg, Uppsala, Linköping Halmstad
Finland 123 Helsinki, Espoon keskus, Tampere urban area, Vantaa Raseborg
United Kingdom 77 Glasgow, Belfast, Aberdeen, Dundee Portadown
Norway 77 Oslo, Bergen, Trondheim, Stavanger Mandal
Latvia 27 Riga, Jelgava, Jūrmala, Ventspils Jelgava
Estonia 21 Tallinn, Tartu, Narva, Pärnu Võru
Iceland 18 Reykjavík, Kópavogur, Hafnarfjörður, Reykjanesbær Vík í Mýrdal
Denmark 8 Aalborg, Hjørring, Nørresundby, Frederikshavn Skive
Greenland 6 Nuuk, Sisimiut, Ilulissat, Qaqortoq Qaqortoq
Faroe Islands 4 Tórshavn, Klaksvík, Fuglafjørður, Miðvágur Tórshavn
Ireland 2 Letterkenny, Sligo Sligo
New Zealand 1 Stewart Island/Rakiura (Oban) Stewart Island/Rakiura (Oban)
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

1,571 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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