AuroraMeteo
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G1Peak 21 September 1993 at 00:00 UTC

Northern Lights on 21 September 1993 (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.

03579 G1 G3 Sun 19 Sept 21:00 UTC · Kp 0.67 Mon 20 Sept 00:00 UTC · Kp 0.67 Mon 20 Sept 03:00 UTC · Kp 1.33 Mon 20 Sept 06:00 UTC · Kp 1.67 Mon 20 Sept 09:00 UTC · Kp 3.67 Mon 20 Sept 12:00 UTC · Kp 3.67 Mon 20 Sept 15:00 UTC · Kp 4.33 Mon 20 Sept 18:00 UTC · Kp 4.00 Mon 20 Sept 21:00 UTC · Kp 5.00 Tue 21 Sept 00:00 UTC · Kp 5.33 Tue 21 Sept 03:00 UTC · Kp 2.33 Tue 21 Sept 06:00 UTC · Kp 1.00 Tue 21 Sept 09:00 UTC · Kp 0.67 Tue 21 Sept 12:00 UTC · Kp 1.67 Tue 21 Sept 15:00 UTC · Kp 2.67 Tue 21 Sept 18:00 UTC · Kp 2.67 Tue 21 Sept 21:00 UTC · Kp 2.00 Wed 22 Sept 00:00 UTC · Kp 1.67 Mon 20 SeptTue 21 SeptWed 22 Sept
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

1,482 towns on our list had enough activity while it was dark there. Cloud cover is not included.

CountryPlacesExamplesFurthest from the pole
United States 435 Detroit, Milwaukee, Minneapolis, Saint Paul Cedar Rapids
Canada 320 Toronto, Montreal, Calgary, Ottawa LaSalle
United Kingdom 169 Glasgow, Edinburgh, Belfast, Newcastle upon Tyne Middlesbrough
Sweden 148 Stockholm, Gothenburg, Malmö, Uppsala Trelleborg
Finland 123 Helsinki, Espoon keskus, Tampere urban area, Vantaa Raseborg
Denmark 93 Copenhagen, Aarhus, Odense, Aalborg Nakskov
Norway 77 Oslo, Bergen, Trondheim, Stavanger Mandal
Latvia 39 Riga, Daugavpils, Liepāja, Jelgava Daugavpils
Lithuania 25 Kaunas, Klaipeda City Municipality, Šiauliai, Panevėžys Kaunas
Estonia 21 Tallinn, Tartu, Narva, Pärnu Võru
Iceland 18 Reykjavík, Kópavogur, Hafnarfjörður, Reykjanesbær Vík í Mýrdal
Greenland 6 Nuuk, Sisimiut, Ilulissat, Qaqortoq Qaqortoq
Faroe Islands 4 Tórshavn, Klaksvík, Fuglafjørður, Miðvágur Tórshavn
Ireland 2 Letterkenny, Sligo Sligo
Germany 1 Westerland Westerland
Svalbard & Jan Mayen 1 Longyearbyen Longyearbyen
Based on each place's Kp threshold (terrain included) and the Sun's position during each 3-hour Kp block.

Only in photos

1,749 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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