G1Peak 13 April 2012 at 03:00 UTC

Northern Lights on 13 April 2012 (Kp 5): Where They Were Visible

Kp reached 5. At that level the edge of the auroral oval reaches about 56.5° magnetic latitude, so the aurora could be seen low on the horizon down to roughly 52.0°. 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

1,164 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	367	Seattle, Milwaukee, Minneapolis, Saint Paul	Yakima
Canada	359	Toronto, Montreal, Calgary, Ottawa	Hamilton
Sweden	125	Stockholm, Gothenburg, Uppsala, Linköping	Halmstad
Finland	123	Helsinki, Espoon keskus, Tampere urban area, Vantaa	Raseborg
Norway	77	Oslo, Bergen, Trondheim, Stavanger	Mandal
Latvia	27	Riga, Jelgava, Jūrmala, Ventspils	Jelgava
United Kingdom	25	Aberdeen, Dundee, Derry, Inverness	Derry
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
Australia	3	Hobart, Bruny Island (Alonnah), Southport / Cockle Creek	Hobart
Ireland	1	Letterkenny	Letterkenny

Only in photos

2,168 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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