G3Peak 10 May 2003 at 00:00 UTC

Northern Lights on 10 May 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 9 hours.

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

5,680 towns on our list had enough activity while it was dark there. Cloud cover is not included.

Based on each place's Kp threshold (terrain included) and the Sun's position during each 3-hour Kp block.
Country	Places	Examples	Furthest from the pole
United States	2,819	Chicago, Seattle, Boston, Portland	Pittsburgh
Canada	941	Toronto, Montreal, Calgary, Ottawa	Yarmouth
United Kingdom	853	Glasgow, Manchester, Sheffield, Leeds	Nottingham
Denmark	260	Copenhagen, Aarhus, Odense, Aalborg	Alholm
Germany	229	Hamburg, Bremen, Kiel, Lübeck	Bremen
Poland	176	Gdańsk, Szczecin, Bydgoszcz, Białystok	Bydgoszcz
Sweden	164	Gothenburg, Malmö, Helsingborg, Lund	Trelleborg
Ireland	120	Dublin, Limerick, Galway, Tallaght	Kilkenny
Norway	72	Bergen, Stavanger, Kristiansand, Sandnes	Mandal
New Zealand	18	Dunedin, Invercargill, Mosgiel, Wānaka	Waimate
Faroe Islands	11	Tórshavn, Klaksvík, Hoyvík, Argir	Argir
Netherlands	8	Groningen, Leeuwarden, Drachten, Sneek	Drachten
Iceland	5	Vestmannaeyjar, Grindavík, Þorlákshöfn, Hvolsvöllur	Vík í Mýrdal
Greenland	4	Qaqortoq, Narsaq, Paamiut, Nanortalik	Nanortalik

Only in photos

3,598 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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