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Updated: 5/10/2020
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  • When the wind speeds of this swirling air reach 34 knots or a bit less, it's called a tropical depression. These form when a place with both low air pressure and thunderstorms has high wind speeds, and the wind moves in a circular, counterclockwise motion.
  • TROPICAL DEPRESSION
  • TROPICAL STORM
  • Tropical depressions become tropical storms when wind speeds are between 39 and 73mph. Tropical storms are low pressure systems that affect a small area. They bring intense rain and thunderstorms and more wind.
  • HURRICANE
  • Tropical storms become hurricanes when their wind speeds are at least 74 mph.
  • Hurricanes can cause lots of damages to the places they hit. As the previous reporters explained, the damage from Harvey is extensive.
  • Hurricane Damage
  • Trees fall.
  • Beach sand erosion.
  • Power outages
  • Flooding
  • Structural damage
  • Deaths
  • Category one hurricanes cause some damage to plant life (trees, shrubs), and might damage small, unstable structures, such as trailers.
  • Cat. 3 hurricanes are powerful enough to cause harm to small buildings.
  • Cat. 2 hurricanes leave rooftops broken and they're strong enough to knock down trees.
  • Cat. 4 hurricanes are strong enough to cause severe flooding damage to buildings in close proximity to the beach.
  • Cat. 5 hurricanes cause brutal damage to structures, buildings, and houses. Their mighty winds can blow away tiny homes and other small structures. They cause lots of flooding.
  • Pointe-a-Pitre Hurricane 1776
  • Newfoundland Hurricane 1775
  • Hurricane Okeechobee 1928
  • DEADLIEST HURRICANES
  • Dominican Republic Hurricane 1930
  • Galveston Hurricane 1900
  • Hurricane Mitch 1998
  • Great Hurricane 1780
  • HURRICANE
  • The Monterey Hurricane1909
  • Hurricane Flora 1963
  • Hurricane Orlene 1974
  • DEATHS
  • 4,000
  • 6,000
  • 2,000-8,000
  • 7,193
  • 6,000-12,000
  • 20,000-27,500
  • 4,075
  • 4,000-4,163
  • 8,200
  • 11,374
  • Hurricane Camille 1969
  • RECORD SETTING HURRICANES
  • Galveston Hurricane 1900
  • Hurricane Katrina 2005
  • Hurricane Maria 2017
  • Hurricane Harvey 2017
  • HURRICANE
  • The damage from these hurricanes is devastating - look at the numbers.
  • Costliest for America - 160 billion USD
  • TITLE
  • Highest Wind Speeds - 190mph
  • Deadliest and Costliest Hurricane to Affect a US Territory - 2,975 deaths, 90 billion dollars
  • Deadliest Hurricane to hit America (6,000-12,000 deaths)
  • Wettest Hurricane in American History
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