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G4Peak 8 July 1991 at 15:00 UTC

Northern Lights on 8 July 1991 (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 36 hours.

03579 G1 G3 Sun 7 Jul 12:00 UTC · Kp 1.00 Sun 7 Jul 15:00 UTC · Kp 1.33 Sun 7 Jul 18:00 UTC · Kp 2.33 Sun 7 Jul 21:00 UTC · Kp 2.67 Mon 8 Jul 00:00 UTC · Kp 2.33 Mon 8 Jul 03:00 UTC · Kp 2.67 Mon 8 Jul 06:00 UTC · Kp 3.67 Mon 8 Jul 09:00 UTC · Kp 4.33 Mon 8 Jul 12:00 UTC · Kp 4.67 Mon 8 Jul 15:00 UTC · Kp 8.00 Mon 8 Jul 18:00 UTC · Kp 7.33 Mon 8 Jul 21:00 UTC · Kp 5.67 Tue 9 Jul 00:00 UTC · Kp 3.33 Tue 9 Jul 03:00 UTC · Kp 4.67 Tue 9 Jul 06:00 UTC · Kp 8.00 Tue 9 Jul 09:00 UTC · Kp 7.00 Tue 9 Jul 12:00 UTC · Kp 8.00 Tue 9 Jul 15:00 UTC · Kp 7.33 Tue 9 Jul 18:00 UTC · Kp 6.67 Tue 9 Jul 21:00 UTC · Kp 5.67 Wed 10 Jul 00:00 UTC · Kp 5.00 Wed 10 Jul 03:00 UTC · Kp 4.33 Wed 10 Jul 06:00 UTC · Kp 3.67 Wed 10 Jul 09:00 UTC · Kp 2.33 Wed 10 Jul 12:00 UTC · Kp 3.33 Wed 10 Jul 15:00 UTC · Kp 2.00 Wed 10 Jul 18:00 UTC · Kp 2.33 Wed 10 Jul 21:00 UTC · Kp 1.67 Thu 11 Jul 00:00 UTC · Kp 2.67 Mon 8 JulTue 9 JulWed 10 JulThu 11 Jul
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

2,618 towns on our list had enough activity while it was dark there. Cloud cover is not included.

CountryPlacesExamplesFurthest from the pole
United States 1,760 New York City, Brooklyn, Chicago, Queens Clarksville
Canada 394 Toronto, Montreal, Calgary, Ottawa Eastern Passage
United Kingdom 161 Glasgow, Edinburgh, Belfast, Newcastle upon Tyne Middlesbrough
Denmark 93 Copenhagen, Aarhus, Odense, Aalborg Nakskov
Sweden 74 Gothenburg, Malmö, Linköping, Jönköping Trelleborg
Latvia 39 Riga, Daugavpils, Liepāja, Jelgava Daugavpils
New Zealand 29 Christchurch, Wellington, Dunedin, Lower Hutt Palmerston North
Lithuania 25 Kaunas, Klaipeda City Municipality, Šiauliai, Panevėžys Kaunas
Australia 20 Melbourne, Geelong, Hobart, Ballarat Wodonga
Estonia 13 Tartu, Pärnu, Viljandi, Kuressaare Võru
China 4 Daxing’anling, Genhe, Tahe Town, Mohe Genhe
Kazakhstan 4 Astana, Kostanay, Petropavl, Kokshetau Astana
Germany 1 Westerland Westerland
Ireland 1 Letterkenny Letterkenny
Based on each place's Kp threshold (terrain included) and the Sun's position during each 3-hour Kp block.

Only in photos

2,255 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.

← 23 June 1991 · 11 July 1991 →