Katrina struck Louisiana and largely destroyed the city of New Orleans, while Harvey caused significant flooding in southeastern Texas after it dropped 60.58 in (1,539 mm) of rainfall; this was the highest rainfall total on record in the country. Europe is rarely affected by tropical cyclones; however, the continent regularly encounters storms after they transitioned into extratropical cyclones. Only one tropical depression – Vince in 2005 – struck Spain, and only one subtropical cyclone – Subtropical Storm Alpha in 2020 – struck Portugal. Occasionally, there are tropical-like cyclones in the Mediterranean Sea. The northern portion of South America experiences occasional tropical cyclones, with 173 fatalities from Tropical Storm Bret in August 1993. The South Atlantic Ocean is generally inhospitable to the formation of a tropical storm. However, in March 2004, Hurricane Catarina struck southeastern Brazil as the first hurricane on record in the South Atlantic Ocean. Environmental impact
Although cyclones take an enormous toll in lives and personal property, they may be important factors in the precipitation regimes of places they impact, as they may bring much-needed precipitation to otherwise dry regions. Their precipitation may also alleviate drought conditions by restoring soil moisture, though one study focused on the Southeastern United States suggested tropical cyclones did not offer significant drought recovery. Tropical cyclones also help maintain the global heat balance by moving warm, moist tropical air to the middle latitudes and polar regions, and by regulating the thermohaline circulation through upwelling.
Nathalie syndrome is a rare genetic developmental defect during embryogenesis disorder and is thought to be hereditary.In 1975 a physician described four siblings in a Dutch family with symptoms of the condition; the condition was named after the oldest sibling.According to Orphanet, the condition occurs in 1 in 1 million people.Children with this condition appear younger than their age. Nathalie syndrome can cause disability and death around early or mid adulthood. Sudden death, cardiomyopathy, and heart failure have been reported in some cases. == References ==