G1Peak 23 November 1991 at 06:00 UTC

Northern Lights on 23 November 1991 (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

1,115 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	368	Seattle, Milwaukee, Minneapolis, Saint Paul	Yakima
Canada	359	Toronto, Montreal, Calgary, Ottawa	Hamilton
Finland	123	Helsinki, Espoon keskus, Tampere urban area, Vantaa	Raseborg
Sweden	116	Stockholm, Gothenburg, Uppsala, Linköping	Gislaved
Norway	77	Oslo, Bergen, Trondheim, Stavanger	Mandal
Estonia	21	Tallinn, Tartu, Narva, Pärnu	Võru
Iceland	18	Reykjavík, Kópavogur, Hafnarfjörður, Reykjanesbær	Vík í Mýrdal
Latvia	7	Ventspils, Valmiera, Cēsis, Limbaži	Cēsis
New Zealand	7	Dunedin, Invercargill, Mosgiel, Gore	Oamaru
Greenland	6	Nuuk, Sisimiut, Ilulissat, Qaqortoq	Qaqortoq
Australia	5	Hobart, Launceston, Bruny Island (Alonnah), Southport / Cockle Creek	Launceston
Faroe Islands	4	Tórshavn, Klaksvík, Fuglafjørður, Miðvágur	Tórshavn
Denmark	3	Hjørring, Frederikshavn, Brønderslev	Brønderslev
Svalbard & Jan Mayen	1	Longyearbyen	Longyearbyen

Only in photos

1,305 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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