Most Hurricanes are Category 1-3 on the Saffir-Simpson scale. Few are 4 & 5. 1900-2007 climatology.
Objective, Satellite-Based Tropical Cyclone Center-Fixing Tony Wimmers and Chris Velden University of Wisconsin - Cooperative Institute for Meteorological.
Hurricanes. Sustained winds at least 74 mph Circulation (c-clkws in N Hem; clkws in S Hem)
US Hurricanes and economic damage: an extreme value perspective Nick Cavanaugh, futurologist Dan Chavas, tempestologist Christina Karamperidou, statsinator.
