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G2Peak 19 September 2023 at 03:00 UTC

Northern Lights on 19 September 2023 (Kp 6.3): Where They Were Visible

Kp reached 6.3. At that level the edge of the auroral oval reaches about 53.8° magnetic latitude, so the aurora could be seen low on the horizon down to roughly 49.3°. Activity stayed at storm level (Kp 5 or more) for 24 hours.

03579 G1 G3 Sun 17 Sept 12:00 UTC · Kp 2.67 Sun 17 Sept 15:00 UTC · Kp 2.67 Sun 17 Sept 18:00 UTC · Kp 3.33 Sun 17 Sept 21:00 UTC · Kp 2.67 Mon 18 Sept 00:00 UTC · Kp 4.33 Mon 18 Sept 03:00 UTC · Kp 4.00 Mon 18 Sept 06:00 UTC · Kp 3.00 Mon 18 Sept 09:00 UTC · Kp 2.00 Mon 18 Sept 12:00 UTC · Kp 4.67 Mon 18 Sept 15:00 UTC · Kp 5.00 Mon 18 Sept 18:00 UTC · Kp 5.00 Mon 18 Sept 21:00 UTC · Kp 4.00 Tue 19 Sept 00:00 UTC · Kp 5.33 Tue 19 Sept 03:00 UTC · Kp 6.33 Tue 19 Sept 06:00 UTC · Kp 4.67 Tue 19 Sept 09:00 UTC · Kp 3.33 Tue 19 Sept 12:00 UTC · Kp 6.00 Tue 19 Sept 15:00 UTC · Kp 5.33 Tue 19 Sept 18:00 UTC · Kp 3.67 Tue 19 Sept 21:00 UTC · Kp 2.67 Wed 20 Sept 00:00 UTC · Kp 3.67 Wed 20 Sept 03:00 UTC · Kp 3.33 Wed 20 Sept 06:00 UTC · Kp 3.33 Wed 20 Sept 09:00 UTC · Kp 2.67 Wed 20 Sept 12:00 UTC · Kp 2.00 Wed 20 Sept 15:00 UTC · Kp 2.00 Mon 18 SeptTue 19 SeptWed 20 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

6,543 towns on our list had enough activity while it was dark there. Cloud cover is not included.

CountryPlacesExamplesFurthest from the pole
United States 2,837 Chicago, Seattle, Boston, Portland Pittsburgh
Canada 956 Toronto, Montreal, Calgary, Ottawa Yarmouth
United Kingdom 853 Glasgow, Manchester, Sheffield, Leeds Nottingham
Sweden 474 Stockholm, Gothenburg, Malmö, Uppsala Trelleborg
Finland 454 Helsinki, Espoon keskus, Tampere urban area, Vantaa Hanko
Norway 276 Oslo, Bergen, Trondheim, Stavanger Mandal
Denmark 255 Copenhagen, Aarhus, Odense, Aalborg Nakskov
Ireland 120 Dublin, Limerick, Galway, Tallaght Kilkenny
Latvia 76 Riga, Daugavpils, Liepāja, Jelgava Daugavpils
Estonia 65 Tallinn, Tartu, Narva, Pärnu Võru
Lithuania 54 Kaunas, Klaipeda City Municipality, Šiauliai, Panevėžys Garliava
Iceland 37 Reykjavík, Kópavogur, Hafnarfjörður, Reykjanesbær Vík í Mýrdal
New Zealand 37 Christchurch, Dunedin, Invercargill, Rolleston Christchurch
Australia 20 Hobart, Launceston, Devonport, Burnie Smithton
Greenland 14 Nuuk, Sisimiut, Ilulissat, Qaqortoq Nanortalik
Faroe Islands 11 Tórshavn, Klaksvík, Hoyvík, Argir Argir
Germany 2 Westerland, Glücksburg Glücksburg
Kazakhstan 1 Petropavl Petropavl
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

3,535 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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