Aurora in Calgary on December 17, 2025

December 17, 2025

Calgary change region

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Probability of aurora in Calgary

Probability of aurora as of end of day, December 17, 2025, Calgary time

13 % Calgary

Aurora intensity index

Auroral intensity index and estimated minimum latitude of auroral observations at zenith as of the end of December 17, 2025, Calgary time

Aurora over North America

Changes in the auroral oval on December 17, 2025 in Canada from the beginning to the end of the day, Coordinated Universal Time (UTC)

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Aurora in the northern hemisphere

Changes in the auroral oval on December 17, 2025 in the northern hemisphere from the beginning to the end of the day, Coordinated Universal Time (UTC)

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Probability of aurora in cities of Canada

Estimated probabilities of aurora observations at zenith for cities in Canada as of end of day December 17, 2025.

1 % Ottawa

1 % Toronto

2 % Montreal

2 % Vancouver

13 % Calgary

30 % Edmonton

0 % Hamilton (Canada)

3 % Quebec

21 % Winnipeg

0 % Kitchener

25 % Saskatoon

18 % Red deer

29 % Salluit

41 % Arviat

61 % Yellowknife

37 % Whitehorse

54 % Thompson

15 % Prince george

30 % Rankin Inlet

21 % Iqaluit

48 % Inuvik

11 % Cambridge Bay

Aurora intensity over 2 days

Changes in the auroral intensity index from December 16 to 17, 2025 in the northern hemisphere, Calgary time

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