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Story summary
- A severe winter storm is impacting the United States, described as historic.
- The storm brings heavy snow, sleet, and dangerous temperatures across the eastern two-thirds.
- More than 700,000 households are without power, and over 10,000 flights have been canceled.
- The National Weather Service warns of significant ice accumulation, which could lead to further airline cancellations.
- The Department of Energy has authorized grid operators to deploy backup resources to prevent blackouts.
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