Aurora in Cheyenne on October 17, 2025

October 17, 2025

Cheyenne change region

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Probability of aurora in Cheyenne

Probability of aurora as of end of day, October 17, 2025, Cheyenne time

0 % Cheyenne

Aurora intensity index

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

Aurora over North America

Changes in the auroral oval on October 17, 2025 in United States 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 October 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 United States

Estimated probabilities of aurora observations at zenith for cities in United States as of end of day October 17, 2025.

0 % Washington

0 % New York

1 % Chicago

0 % Philadelphia

2 % Seattle

1 % Detroit

1 % Portland

0 % Boston

1 % Madison

5 % Bismarck

1 % Olympia

2 % Helena

3 % Saint Paul

27 % Fairbanks

10 % Anchorage

14 % Juneau

5 % Hooper Bay

11 % Nome

19 % Kotzebue

30 % Utqiagvik

5 % Bethel

13 % Cordova

Aurora intensity over 2 days

Changes in the auroral intensity index from October 16 to 17, 2025 in the northern hemisphere, Cheyenne time

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