Hurricanes and Tropical Storms Tropical Storm categories Tropical

Hurricanes and Tropical Storms

Tropical Storm categories Tropical Storm Categories Tropical Depression Tropical Disturbance Tropical Storm Hurricanes and Tropical Storms

Tropical Disturbance A discrete tropical weather system of apparently organized convection generally 200 to 600 km (100 to 300 mi) in diameter originating in the tropics or subtropics having a nonfrontal migratory character maintaining its identity for 24 hours or more Hurricanes and Tropical Storms

Tropical Depressions A tropical cyclone in which the maximum sustained wind speed is 38 mph or less. Depressions have a closed circulation. Hurricanes and Tropical Storms

Tropical Storms A tropical cyclone in which the maximum sustained surface wind speed ranges from 39 mph to 73 mph. The convection in tropical storms is usually more concentrated near the center with outer rainfall organizing into distinct bands. Hurricanes and Tropical Storms

Hurricane categories The Saffir / Simpson Scale Hurricanes and Tropical Storms

Category 1 Pressure: 980 + mb Wind Speeds: 74 - 95 mph Storm Surge: 5 – 8 feet Damage: Minimal Hurricanes and Tropical Storms

Category 2 Pressure: 965 - 979 mb Wind Speeds: 96 - 110 mph Storm Surge: 9 - 15 feet Damage: Moderate Hurricanes and Tropical Storms

Category 3 Pressure: 945 - 964 mb Wind Speeds: 111 - 130 mph Storm Surge: 12 - 17 feet Damage: Extensive Hurricanes and Tropical Storms

Category 4 Pressure: 920 - 944 mb Wind Speeds: 131 - 155 mph Storm Surge: 14 - 20 feet Damage: Extreme Hurricanes and Tropical Storms

Category 5 Pressure: Less than 920 mb Wind Speeds: 155 + mph Storm Surge: 17 - 25 feet Damage: Catastrophic Hurricanes and Tropical Storms Sources: U. S. Army Corps of Engineers, http: //www. sas. usace. army. mil/em/emhurcatinfo. htm National Weather Service, National Hurricane Center, http: //www. nhc. noaa. gov/