But the most feared phenomenon is the storm surge that accompanies the cyclone. This will cause an abnormal rise of sea level, likely to cause flooding in the areas directly impacted by the core of Amphan. It could reach 4 to 5m in the District of 24 North and South Parganas, 3 to 4m in the East Medinipur District in the State of West Bengal.
Storm Surge Forecast - IMD
The area to be hit is particularly populated and exposed to the risk of flooding. Evacuation operations are carried out to keep the maximum population away from the coastal regions liable to be flooded during the impact. Note that the epidemic of covid-19 complicates evacuation, the authorities trying to enforce the rules of social distancing.