G1Peak 28 July 2005 at 03:00 UTC

Northern Lights on 28 July 2005 (Kp 5.3): Where They Were Visible

Kp reached 5.3. At that level the edge of the auroral oval reaches about 55.8° magnetic latitude, so the aurora could be seen low on the horizon down to roughly 51.3°. Activity stayed at storm level (Kp 5 or more) for 6 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

1,308 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	470	Detroit, Milwaukee, Minneapolis, Saint Paul	Cedar Rapids
Canada	323	Toronto, Montreal, Calgary, Ottawa	LaSalle
Sweden	130	Stockholm, Gothenburg, Malmö, Uppsala	Oxie
United Kingdom	103	Glasgow, Edinburgh, Aberdeen, Dundee	Ashington
Finland	77	Helsinki, Espoon keskus, Tampere urban area, Vantaa	Raseborg
Denmark	75	Copenhagen, Aarhus, Aalborg, Frederiksberg	Esbjerg
Norway	50	Oslo, Bergen, Stavanger, Kristiansand	Mandal
Latvia	39	Riga, Daugavpils, Liepāja, Jelgava	Daugavpils
Estonia	21	Tallinn, Tartu, Narva, Pärnu	Võru
Lithuania	18	Klaipeda City Municipality, Šiauliai, Panevėžys, Mažeikiai	Utena
Greenland	1	Qaqortoq	Qaqortoq
Ireland	1	Letterkenny	Letterkenny

Only in photos

2,372 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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