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Geomagnetic Storms May Illuminate 16 States This Weekend

8/19/2025

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Summary

Story summary

Northern lights may be visible in 16 states, including Wisconsin, on August 18 and 19 due to geomagnetic storms.
The Kp index is forecasted to reach 5 on August 18, suggesting brighter auroras.
Thunderstorms may hinder visibility in Wisconsin on August 18.
Ideal viewing times are between 10 p.m. and 2 a.m., away from city lights.
Geomagnetic activity is expected to decline after August 19, reducing visibility chances.

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Story summary

Northern lights may be visible in 16 states, including Wisconsin, on August 18 and 19 due to geomagnetic storms.
The Kp index is forecasted to reach 5 on August 18, suggesting brighter auroras.
Thunderstorms may hinder visibility in Wisconsin on August 18.
Ideal viewing times are between 10 p.m. and 2 a.m., away from city lights.
Geomagnetic activity is expected to decline after August 19, reducing visibility chances.