Name the cyclone occured in 2009.
Why do you think people migrated to Kolkata?
Reflection on contemparory issues and questioning. (AS-IV)
Imagine how one would cope with the situation if millions of people were
affected. Where would you find land for resettlement? What jobs would they
do ? Give your suggestions,
Answers
Answer:
Origin of cyclone
On 22 May 2009, the Kolkata Meteorological Department reported that a low pressure area had formed over West-central Bay of Bengal and adjoining East -central Bay of Bengal. The system was likely to intensify further. On 23 May, the department reported that the system had further i ntensified and was likely to concentrate into a Depression. On 24 May, the system intensified into a Deep Depression and lay about 550 kilometres south of Kolkata. The meteorological department predicted that the system was likely to intensify further into a Cyclo nic Storm and cross West Bengal or Bangladesh coast near 89=B0 East, about 100 kilometres east of Sagar Island by 25 May evening.
On 25 May, the Cyclonic Storm "Aila" over North West Bay, moved northwards and intensified further and lay centred at 0830 hrs IST with in half a degree of latitude 20.5=B0N/Longitude 88.0=B0E, about 250 Km south of Kolkata with estimated central pressure 984 HPA and move in a near northerly direction and cross West Bengal Coast near latitude 88.0 Deg East (near Sagar Islands) .
On 26 May, Cyclone Aila over Sub-Himalayan West Bengal & adjoining Bangladesh moved further northward, weakened into a deep depression and lay centred at 0830 hours IST over Sub -Himalayan West Bengal, about 50 km to the north of Malda. The system is likely to move in a near northerly direction and weaken into a depression during next six hours. Under its influence, rainfall at most places with heavy to very heavy falls at a few places and isolated extremely heavy falls (= 25 cm) is likely over Sub-Himalayan West Bengal & Sikkim and Assam & Meghalaya during next 24 hours. Rain/thundershower is also likely at many places with isolated heavy falls over Arunachal Pradesh and Nagaland, Manipur, Mizoram and Tripura during next 24 hours. Squally wind speed reaching 50-60 kmph likely over Sub-Himalayan West Bengal & Sikkim, Assam & Meghalaya and Arunachal Pradesh during next 12 hours.