G3Peak 18 June 2003 at 06:00 UTC

Northern Lights on 18 June 2003 (Kp 6.7): Where They Were Visible

Kp reached 6.7. At that level the edge of the auroral oval reaches about 53.2° magnetic latitude, so the aurora could be seen low on the horizon down to roughly 48.7°. Activity stayed at storm level (Kp 5 or more) for 18 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

1,718 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	1,201	Chicago, Seattle, Boston, Portland	Pittsburgh
Canada	393	Toronto, Montreal, Calgary, Ottawa	Eastern Passage
United Kingdom	80	Glasgow, Edinburgh, Derry, Paisley	Ashington
New Zealand	17	Christchurch, Dunedin, Invercargill, Rolleston	Rangiora
Sweden	9	Visby, Västervik, Kungsbacka, Nässjö	Gislaved
Australia	7	Hobart, Launceston, Devonport, Burnie	Burnie
Latvia	7	Ventspils, Valmiera, Cēsis, Limbaži	Cēsis
Estonia	2	Võru, Valga	Võru
Denmark	1	Brønderslev	Brønderslev
Ireland	1	Letterkenny	Letterkenny

Only in photos

2,193 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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