geomagnetic storm


Definition of geomagnetic storm

Examples of geomagnetic storm in a Sentence

Recent Examples on the Web Just 17 hours later, Earth experienced the largest geomagnetic storm ever recorded, and the worldwide reports of its effects are now legendary. Ethan Siegel, Forbes, "Ask Ethan: How Prepared Are We For The Next Giant Solar Flare?," 26 Feb. 2021 Caused by a geomagnetic storm that is the result of a Coronal Mass Ejection (CME), or solar flare, the Northern Lights could be visible across a number of northerly states. James Rogers, Fox News, "Northern Lights set to thrill US skywatchers," 10 Dec. 2020 The alignment should prompt a moderate geomagnetic storm, which makes the northern lights visible in parts of the country where they’re not usually seen. Katherine Rosenberg-douglas,, "It will be a soggy, possibly snowy weekend in Chicago. But first, there’s an opportunity to see the northern lights in northern Illinois.," 9 Dec. 2020 This week, the Space Weather Prediction Center of the National Oceanic and Atmospheric Administration (NOAA) announced G1 and G2 geomagnetic storm watches for Sept. 27 through Sept. 29. Elizabeth Rhodes, Travel + Leisure, "The Northern Lights May Be Visible Over Parts of the U.S. Tonight — Here's How to Spot Them," 28 Sep. 2020 The Kp range is zero to nine, with zero being weak and nine being a full-on geomagnetic storm—the number aurora hunters fantasize about. Stephanie Vermillion, National Geographic, "Here’s how to see auroras—from the Great Lakes," 4 Aug. 2020 Such events—called geomagnetic storms—have the potential to disable spacecraft orbiting the earth, as well as overwhelm basic infrastructures of our daily life, such as electrical grids and communications systems. Smithsonian Magazine, Smithsonian Magazine, "Fifty Things We’ve Learned About the Earth Since the First Earth Day," 22 Apr. 2020 Historical measurements of geomagnetic storms are not easy. Jonathan O'callaghan, Scientific American, "New Studies Warn of Cataclysmic Solar Superstorms," 24 Sep. 2019 Some lucky portions of the northern U.S. will get to witness the Northern Lights this weekend, a result of a coming geomagnetic storm. Daisy Hernandez, Popular Mechanics, "How to See the Northern Lights This Weekend," 30 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'geomagnetic storm.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of geomagnetic storm

1941, in the meaning defined above

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The first known use of geomagnetic storm was in 1941

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Cite this Entry

“Geomagnetic storm.” Dictionary, Merriam-Webster, Accessed 17 May. 2021.

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