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Estimated peak geoelectric field strengths during a Carrington-class magnetic storm

Published by U.S. Geological Survey | Department of the Interior | Catalog Last Checked: August 01, 2026 at 03:25 AM | Dataset Last Updated: September 25, 2025 at 12:00 AM
This dataset presents modeled estimates of peak one-minute-resolution geoelectric-field strengths at 1,616 survey sites across the contiguous United States during a hypothetical Carrington-class magnetic storm. The values are derived using magnetometer time series and magnetotelluric impedance tensors. Each entry includes a most-likely value and a 68% confidence interval.

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