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G1Peak 28 May 1991 at 00:00 UTC

Northern Lights on 28 May 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 3 hours.

03579 G1 G3 Mon 27 May 00:00 UTC · Kp 4.00 Mon 27 May 03:00 UTC · Kp 4.00 Mon 27 May 06:00 UTC · Kp 2.67 Mon 27 May 09:00 UTC · Kp 3.67 Mon 27 May 12:00 UTC · Kp 4.00 Mon 27 May 15:00 UTC · Kp 2.67 Mon 27 May 18:00 UTC · Kp 3.67 Mon 27 May 21:00 UTC · Kp 3.67 Tue 28 May 00:00 UTC · Kp 5.00 Tue 28 May 03:00 UTC · Kp 3.67 Tue 28 May 06:00 UTC · Kp 3.33 Tue 28 May 09:00 UTC · Kp 3.67 Tue 28 May 12:00 UTC · Kp 2.33 Tue 28 May 15:00 UTC · Kp 4.67 Tue 28 May 18:00 UTC · Kp 4.67 Tue 28 May 21:00 UTC · Kp 5.00 Wed 29 May 00:00 UTC · Kp 5.33 Mon 27 MayTue 28 MayWed 29 May
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

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

CountryPlacesExamplesFurthest from the pole
Canada 155 Montreal, Winnipeg, Quebec City, Laval Charlottetown
United Kingdom 100 Glasgow, Edinburgh, Aberdeen, Dundee Ashington
United States 27 Fargo, Bismarck, Grand Forks, Minot Watertown
Ireland 1 Letterkenny Letterkenny
Based on each place's Kp threshold (terrain included) and the Sun's position during each 3-hour Kp block.

Only in photos

1,242 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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