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Megastorm may refer to:

Historic superstorms[edit]

  • ARkStorm, an extremely rare once-in-a-lifetime storm that causes historic, extremely damaging flooding over the period of a month.
  • The Great Flood of 1862, the most recent ARkStorm event, in which large portions of California were submerged under at least 10 feet of water, especially in Central Valley.


See also[edit]

  • Hypercane - hypothetical extreme tropical cyclones that could reach the size of continents and last for several weeks on average. Hypercanes also would have maximum sustained winds reaching at least 500 miles per hour (800 km/h), and a minimum central pressure of 700 millibars (21 inHg) or lower.