Where Hurricanes Form?
Williams, The Weather Book
Hurricanes
Hurricanes
Typhoons
Tropical Cyclones
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¥ Hurricanes go by different names in different regions of the world.
¥ Form over warm tropical waters, equatorward of 20¡ latitudeÉ
  Not on equator (poleward of 5 ¡) b/c non-zero Coriolis is needed.
¥ Occur most frequently over Western North Pacific Ocean.