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G1Peak 16 April 2021 at 18:00 UTC

Northern Lights on 16 April 2021 (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 3 hours.

03579 G1 G3 Thu 15 Apr 18:00 UTC · Kp 0.67 Thu 15 Apr 21:00 UTC · Kp 1.33 Fri 16 Apr 00:00 UTC · Kp 2.00 Fri 16 Apr 03:00 UTC · Kp 2.33 Fri 16 Apr 06:00 UTC · Kp 2.67 Fri 16 Apr 09:00 UTC · Kp 2.33 Fri 16 Apr 12:00 UTC · Kp 3.33 Fri 16 Apr 15:00 UTC · Kp 3.00 Fri 16 Apr 18:00 UTC · Kp 5.00 Fri 16 Apr 21:00 UTC · Kp 4.33 Sat 17 Apr 00:00 UTC · Kp 4.33 Sat 17 Apr 03:00 UTC · Kp 4.67 Sat 17 Apr 06:00 UTC · Kp 4.67 Sat 17 Apr 09:00 UTC · Kp 3.67 Sat 17 Apr 12:00 UTC · Kp 4.33 Sat 17 Apr 15:00 UTC · Kp 3.67 Sat 17 Apr 18:00 UTC · Kp 3.00 Fri 16 AprSat 17 Apr
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

1,584 towns on our list had enough activity while it was dark there. Cloud cover is not included.

CountryPlacesExamplesFurthest from the pole
Sweden 469 Stockholm, Gothenburg, Malmö, Uppsala Oxie
Finland 454 Helsinki, Espoon keskus, Tampere urban area, Vantaa Hanko
Norway 274 Oslo, Bergen, Trondheim, Stavanger Mandal
Denmark 121 Copenhagen, Aalborg, Frederiksberg, Hvidovre Køge
Latvia 76 Riga, Daugavpils, Liepāja, Jelgava Daugavpils
United Kingdom 66 Aberdeen, Dundee, Inverness, Perth Dunblane
Estonia 65 Tallinn, Tartu, Narva, Pärnu Võru
Lithuania 29 Klaipeda City Municipality, Šiauliai, Panevėžys, Mažeikiai Utena
Faroe Islands 11 Tórshavn, Klaksvík, Hoyvík, Argir Argir
Iceland 10 Selfoss, Vestmannaeyjar, Egilsstaðir, Þorlákshöfn Vík í Mýrdal
Australia 9 Hobart, Launceston, New Norfolk, Bellerive Launceston
Based on each place's Kp threshold (terrain included) and the Sun's position during each 3-hour Kp block.

Only in photos

1,854 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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