Aurora in Anchorage on October 4, 2025

October 4, 2025

Anchorage change region

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Probability of aurora in Anchorage

Probability of aurora as of end of day, October 4, 2025, Anchorage time

15 % Anchorage

Aurora intensity index

Auroral intensity index and estimated minimum latitude of auroral observations at zenith as of the end of October 4, 2025, Anchorage time

Aurora over North America

Changes in the auroral oval on October 4, 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 4, 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 4, 2025.

0 % Washington

0 % New York

0 % Chicago

0 % Philadelphia

1 % Seattle

0 % Detroit

0 % Portland

0 % Boston

0 % Madison

3 % Bismarck

1 % Olympia

2 % Helena

1 % Saint Paul

31 % Fairbanks

15 % Anchorage

18 % Juneau

8 % Hooper Bay

17 % Nome

26 % Kotzebue

28 % Utqiagvik

8 % Bethel

18 % Cordova

Aurora intensity over 2 days

Changes in the auroral intensity index from October 3 to 4, 2025 in the northern hemisphere, Anchorage time

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