Aurora in Anchorage on September 21, 2025

September 21, 2025

Anchorage change region

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Probability of aurora in Anchorage

Probability of aurora as of end of day, September 21, 2025, Anchorage time

5 % Anchorage

Aurora intensity index

Auroral intensity index and estimated minimum latitude of auroral observations at zenith as of the end of September 21, 2025, Anchorage time

Aurora over North America

Changes in the auroral oval on September 21, 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 September 21, 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 September 21, 2025.

0 % Washington

0 % New York

0 % Chicago

0 % Philadelphia

0 % Seattle

0 % Detroit

0 % Portland

0 % Boston

0 % Madison

1 % Bismarck

0 % Olympia

0 % Helena

0 % Saint Paul

13 % Fairbanks

5 % Anchorage

6 % Juneau

2 % Hooper Bay

6 % Nome

10 % Kotzebue

11 % Utqiagvik

2 % Bethel

7 % Cordova

Aurora intensity over 2 days

Changes in the auroral intensity index from September 20 to 21, 2025 in the northern hemisphere, Anchorage time

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