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With a Kp index of four — on a scale between zero and nine — tonight’s aurora activity is a result of Monday’s strong to severe geomagnetic storms.—Valerie Mesa, People.com, 2 Sep. 2025 Topline The northern lights may be visible in a selection of states just south of the Canadian border on Tuesday, following a brief period of geomagnetic storms earlier in the week, according to the National Oceanic and Atmospheric Administration.—Ty Roush, Forbes.com, 2 Sep. 2025 The National Oceanic and Atmospheric Administration's Space Weather Prediction Center issued a geomagnetic storm watch for Monday and Tuesday.—Jenna Sundel, MSNBC Newsweek, 2 Sep. 2025 Scientists rank space weather conditions on a scale of five, from minor (G1) to severe (G5), and Monday night’s forecast shows the geomagnetic storm will likely cause moderate, G2- or G3-level conditions early in the night.—Jackie Wattles, CNN Money, 1 Sep. 2025 See All Example Sentences for geomagnetic storm
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