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Tonight, April 30, a high-speed stream of solar wind may escalate geomagnetic activity, resulting in auroras as far south as Illinois.—Michele Laufik, Martha Stewart, 30 Apr. 2026 Space weather experts at the National Oceanic and Atmospheric Administration suggest that activity could peak during late evening into pre-dawn hours, when skies are darkest and geomagnetic conditions have the best chance of intensifying.—Valerie Mesa, PEOPLE, 29 Apr. 2026 High-speed solar winds are expected to eject from the sun and head toward Earth, which NOAA says typically increases the level of geomagnetic activity in the Earth’s atmosphere, producing visible northern lights displays.—Conor Murray, Forbes.com, 18 Apr. 2026 While the weekend's geomagnetic activity is beginning to wind down, the show may not be completely over yet.—Daisy Dobrijevic, Space.com, 23 Mar. 2026 See All Example Sentences for geomagnetic