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G3Peak 12 July 2003 at 03:00 UTC

Northern Lights on 12 July 2003 (Kp 6.7): Where They Were Visible

Kp reached 6.7. At that level the edge of the auroral oval reaches about 53.2° magnetic latitude, so the aurora could be seen low on the horizon down to roughly 48.7°. Activity stayed at storm level (Kp 5 or more) for 27 hours.

03579 G1 G3 Thu 10 Jul 06:00 UTC · Kp 2.00 Thu 10 Jul 09:00 UTC · Kp 2.00 Thu 10 Jul 12:00 UTC · Kp 2.67 Thu 10 Jul 15:00 UTC · Kp 1.00 Thu 10 Jul 18:00 UTC · Kp 1.33 Thu 10 Jul 21:00 UTC · Kp 2.67 Fri 11 Jul 00:00 UTC · Kp 2.67 Fri 11 Jul 03:00 UTC · Kp 4.33 Fri 11 Jul 06:00 UTC · Kp 6.00 Fri 11 Jul 09:00 UTC · Kp 5.00 Fri 11 Jul 12:00 UTC · Kp 5.33 Fri 11 Jul 15:00 UTC · Kp 5.33 Fri 11 Jul 18:00 UTC · Kp 5.67 Fri 11 Jul 21:00 UTC · Kp 5.67 Sat 12 Jul 00:00 UTC · Kp 6.00 Sat 12 Jul 03:00 UTC · Kp 6.67 Sat 12 Jul 06:00 UTC · Kp 5.33 Sat 12 Jul 09:00 UTC · Kp 3.33 Sat 12 Jul 12:00 UTC · Kp 4.00 Sat 12 Jul 15:00 UTC · Kp 3.00 Sat 12 Jul 18:00 UTC · Kp 3.67 Sat 12 Jul 21:00 UTC · Kp 3.33 Sun 13 Jul 00:00 UTC · Kp 3.00 Sun 13 Jul 03:00 UTC · Kp 2.67 Sun 13 Jul 06:00 UTC · Kp 3.33 Fri 11 JulSat 12 JulSun 13 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

2,296 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
Canada 401 Toronto, Montreal, Calgary, Ottawa Eastern Passage
United Kingdom 342 Glasgow, Manchester, Leeds, Edinburgh Manchester
Denmark 93 Copenhagen, Aarhus, Odense, Aalborg Nakskov
Sweden 79 Gothenburg, Malmö, Linköping, Jönköping Trelleborg
Germany 46 Kiel, Lübeck, Rostock, Flensburg Norderstedt
Latvia 39 Riga, Daugavpils, Liepāja, Jelgava Daugavpils
Ireland 37 Dublin, Galway, Tallaght, Drogheda Dublin
Lithuania 25 Kaunas, Klaipeda City Municipality, Šiauliai, Panevėžys Kaunas
New Zealand 16 Christchurch, Dunedin, Invercargill, Rolleston Christchurch
Estonia 14 Tartu, Pärnu, Viljandi, Kuressaare Võru
Australia 7 Hobart, Launceston, Devonport, Burnie Burnie
Norway 3 Kristiansand, Grimstad, Mandal Mandal
Kazakhstan 1 Petropavl Petropavl
Based on each place's Kp threshold (terrain included) and the Sun's position during each 3-hour Kp block.

Only in photos

2,880 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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