Answer:
(i)
This is the transition period during the months of October and November.
(ii) With the apparent movement of the Sun towards the south, the low pressure
trough over the northern plains becomes weaker. This is gradually replaced by a
high pressure system.
(iii) The south-west monsoon winds weaken and start
withdrawing gradually.
(iv) By the beginning of October, the monsoon withdraws
from the northern plains.
(v) The months of October and November form a period of
transition from hot rainy season to dry winter conditions.
(vi) When monsoons retreat, skies get clear and the
temperature rises.
(vii) While day temperatures are high, nights are cool and
pleasant. The land is still moist.
(viii) Owing to the conditions of high temperature and
humidity, the weather becomes oppressive during the day. This is commonly known
as October Heat.
(ix) The low pressure conditions get transferred to the
Bay of Bengal by early November.
(x) The cyclonic depressions originate from the Andaman
Sea and cause heavy and widespread rains on the eastern coast.
(xi) These tropical cyclones are often very destructive
and affect the coast of Oclisha, West Bengal anci Bangladesh.
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