Aurora in Portland on December 11, 2025

December 11, 2025

Portland change region

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Probability of aurora in Portland

Probability of aurora as of end of day, December 11, 2025, Portland time

0 % Portland

Aurora intensity index

Auroral intensity index and estimated minimum latitude of auroral observations at zenith as of the end of December 11, 2025, Portland time

Aurora over North America

Changes in the auroral oval on December 11, 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 December 11, 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 December 11, 2025.

0 % Washington

0 % New York

0 % Chicago

0 % Philadelphia

2 % Seattle

0 % Detroit

0 % Portland

0 % Boston

0 % Madison

6 % Bismarck

1 % Olympia

3 % Helena

2 % Saint Paul

62 % Fairbanks

27 % Anchorage

35 % Juneau

14 % Hooper Bay

31 % Nome

50 % Kotzebue

61 % Utqiagvik

13 % Bethel

34 % Cordova

Aurora intensity over 2 days

Changes in the auroral intensity index from December 10 to 11, 2025 in the northern hemisphere, Portland time

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