Aurora in Portland on April 17, 2026

April 17, 2026

Portland change region

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Probability of aurora in Portland

Probability of aurora as of end of day, April 17, 2026, Portland time

7 % Portland

Aurora intensity index

Auroral intensity index and estimated minimum latitude of auroral observations at zenith as of the end of April 17, 2026, Portland time

Aurora over North America

Changes in the auroral oval on April 17, 2026 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 April 17, 2026 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 April 17, 2026.

0 % Washington

0 % New York

2 % Chicago

0 % Philadelphia

11 % Seattle

1 % Detroit

7 % Portland

0 % Boston

3 % Madison

12 % Bismarck

9 % Olympia

11 % Helena

6 % Saint Paul

69 % Fairbanks

37 % Anchorage

43 % Juneau

25 % Hooper Bay

40 % Nome

56 % Kotzebue

61 % Utqiagvik

24 % Bethel

44 % Cordova

Aurora intensity over 2 days

Changes in the auroral intensity index from April 16 to 17, 2026 in the northern hemisphere, Portland time

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