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  2. Accumulated cyclone energy - Wikipedia

    en.wikipedia.org/wiki/Accumulated_cyclone_energy

    It is calculated by summing the square of tropical cyclones' maximum sustained winds, as recorded every six hours, but only for windspeeds of at least tropical storm strength (≥ 34 kn; 63 km/h; 39 mph); [4] the resulting figure is divided by 10,000 to place it on a more manageable scale. [2]

  3. Tropical cyclone intensity scales - Wikipedia

    en.wikipedia.org/wiki/Hurricane_Intensity_Index

    A minor change to the scale was made ahead of the 2012 hurricane season, with the wind speeds for Categories 3–5 tweaked to eliminate the rounding errors that had occurred during previous seasons, when a hurricane had wind speeds of 115 kn (130 mph; 215 km/h). [7]

  4. Tropical cyclone scales - Wikipedia

    en.wikipedia.org/wiki/Tropical_cyclone_category...

    A minor change to the scale was made ahead of the 2012 hurricane season, with the wind speeds for Categories 3–5 tweaked to eliminate the rounding errors that had occurred during previous seasons, when a hurricane had wind speeds of 115 kn (130 mph; 215 km/h).

  5. Should we add a Category 6 to the hurricane scale? Why ... - AOL

    www.aol.com/scientists-want-add-category-6...

    Fed by climate change, hurricanes have outpaced the tool meteorologists use to convey their strength, and the National Hurricane Center should add a Category 6 to the Saffir-Simpson scale to ...

  6. AccuWeather's RealImpactâ„¢ Scale for Hurricanes ... - AOL

    www.aol.com/weather/accuweathers-realimpact...

    Tropical Storm Allison, which did not receive a hurricane numerical designation on the Saffir-Simpson scale, made landfall in Texas in 2001, causing catastrophic flooding and the deaths of more ...

  7. Saffir–Simpson scale - Wikipedia

    en.wikipedia.org/wiki/Saffir–Simpson_scale

    This measuring system was formerly known as the Saffir–Simpson hurricane scale, or SSHS. To be classified as a hurricane, a tropical cyclone must have one-minute-average maximum sustained winds at 10 m (33 ft) above the surface of at least 74 mph (64 kn, 119 km/h; Category 1). [1]

  8. Helene now projected as Category 4 hurricane, could get ... - AOL

    www.aol.com/tropical-storm-helene-become-major...

    TALLAHASSEE, Fla. – Hurricane Helene is now predicted to reach Florida as a Category 4 hurricane, part of a frightening forecast of 130-mph winds and high storm surge that brings a dire scenario ...

  9. Orders of magnitude (power) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(power)

    weather: rate of heat energy release by a hurricane [citation needed] 10 14: 1.4 × 10 14: eco: global net primary production (= biomass production) via photosynthesis [47] 2.9 × 10 14: tech: the power the Z machine reaches in 1 billionth of a second when it is fired [citation needed] 3 × 10 14: weather: Hurricane Katrina's rate of release of ...