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G1Peak 30 August 1999 at 09:00 UTC

Northern Lights on 30 August 1999 (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 Sun 29 Aug 09:00 UTC · Kp 2.00 Sun 29 Aug 12:00 UTC · Kp 1.00 Sun 29 Aug 15:00 UTC · Kp 3.00 Sun 29 Aug 18:00 UTC · Kp 3.00 Sun 29 Aug 21:00 UTC · Kp 2.33 Mon 30 Aug 00:00 UTC · Kp 1.67 Mon 30 Aug 03:00 UTC · Kp 2.67 Mon 30 Aug 06:00 UTC · Kp 4.33 Mon 30 Aug 09:00 UTC · Kp 5.00 Mon 30 Aug 12:00 UTC · Kp 3.00 Mon 30 Aug 15:00 UTC · Kp 4.00 Mon 30 Aug 18:00 UTC · Kp 3.67 Mon 30 Aug 21:00 UTC · Kp 3.67 Tue 31 Aug 00:00 UTC · Kp 3.00 Tue 31 Aug 03:00 UTC · Kp 3.33 Tue 31 Aug 06:00 UTC · Kp 3.00 Tue 31 Aug 09:00 UTC · Kp 3.33 Mon 30 AugTue 31 Aug
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

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

CountryPlacesExamplesFurthest from the pole
United States 278 Seattle, Minneapolis, Saint Paul, Anchorage Yakima
Canada 117 Calgary, Edmonton, Winnipeg, Vancouver Sooke
New Zealand 7 Dunedin, Invercargill, Mosgiel, Gore Oamaru
Australia 5 Hobart, Launceston, Bruny Island (Alonnah), Southport / Cockle Creek Launceston
Based on each place's Kp threshold (terrain included) and the Sun's position during each 3-hour Kp block.

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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