DISASTER MANAGEMENT DEPARTMENT
Government of Andhra Pradesh
The state of Andhra Pradesh experienced 71 cyclones during 1892-1997, each time with colossal damage. Between 1892 and 1977, 56 cyclones affected the seven coastal districts.
The district wise figures are given in the following Table indicate that Nellore, Krishna and Srikakaulam districts had more number of cyclones.
|District||No. of cyclones crossing in Coastal AP|
The figures in bold indicate severe cyclones.
Some of the factors responsible for vulnerability of the state to cyclone are:
1. Almost half of the storms in the bay of Bengal become severe cyclones often accompanied by storm surges.
2. Low lying areas along the coast are vulnerable to extensive flooding and deep inland sea water incursion.
3. High concentration of population, infrastructure and economic activities along the coast.
4. Lack of proper maintenance of the flood protection and irrigation systems, drains, embankments etc.,
5. Lack of comprehensive coastal zone and delta management
In the past two decades, major cyclones caused immense loss of human lives and livestock and massive damage to property, both of people and the Government viz., November 1977, May 1979, November 1984
Impact of Cyclones
The November 1977 cyclone was the deadliest with 9941 people died, 900 people missing and 34 lakhs rendered homeless. Cattle and livestock losses stood at Rs. 2.5 lakhs, crops were lost in 33,36,000 acres and 1,014,800 houses were damaged. Losses to buildings and public property were estimated at Rs. 172 crores.
The major impact of cyclones can be broadly categorised as below:
Loss of lives, injuries and other health consequences such as epidemics, and post traumatic stress disorders (PTSD)
Loss of habitat
Loss of cattle and damage to crops and agricultural fields
Damage to public utilities
Disturbance and damage to the ecosystem
Most lives are lost during a cyclone on account of floods and the devastating storm surge that often accompany cyclones. In case of severe cyclonic storms with storm surges, more than 90% of the fatalities occur due to drowning, either during the incoming water phase or during the out surges. In severe cyclonic storms without storm surges, the deaths are more or less evenly divided between drowning and the collapse of buildings. The most common health problems include water borne diseases such as diarrohea, dysentery, typhoid, viral hepatitis, respiratory diseases such as pneumonia and whooping cough, measles, gastroenteritis, cholera, conjunctivitis, and fever.
Cyclone Hazard Map: