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  1. Saffir-Simpson Hurricane Wind Scale - National Hurricane Center

  2. Saffir–Simpson scale - Wikipedia

  3. Saffir-Simpson Hurricane Scale - U.S. National Park Service

  4. How strong will Helene get? Hurricane category forecast explained.

  5. Saffir-Simpson Hurricane Wind Scale - National Weather Service

  6. Hurricane Helene: Category 1 storm intensifies as it takes ... - NBC …

  7. Hurricane Helene live updates: Storm now a dangerous Category …

  8. More deadly than wind, storm surge from Hurricane Helene could …

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