| 1. | During geomagnetic storms, this system can be severely hampered by radio clutter.
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| 2. | During a geomagnetic storm the output may be a hundred times that.
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| 3. | During geomagnetic storms, the number and energy of electrons and ions increase.
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| 4. | There were few immediate reports of damage related to the geomagnetic storm.
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| 5. | A G4 ( severe ) geomagnetic storm was reported on September 26.
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| 6. | The frequency of geomagnetic storms increases and decreases with the sunspot cycle.
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| 7. | The disturbance was expected to produce a geomagnetic storm rated G3.
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| 8. | On September 1 2, 1859, the largest recorded geomagnetic storm occurred.
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| 9. | For example, a geomagnetic storm in September 1898 affected telegraph lines.
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| 10. | Grid management is also aided by space weather forecasts of major geomagnetic storms.
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