Government of India

Ministry of Earth Sciences

India Meteorological Department 

 

Press Release

Dated 3 July, 2009

 

Subject: Monsoon- 2009: Current status

 

 

Meteorological conditions of the week (25 June to 1 July)

 

v     The off-shore trough extending from Konkan coast to Kerala coast persisted   throughout the week.

v     An upper air cyclonic circulation developed over Bay of Bengal on 25 June and moved across eastern & central parts of the country upto northwest India.

v     A Mid latitude westerly trough affected northwest India towards the end of June.

 

Monsoon Advance (upto 3 July, 2009)

 

 

            After a hiatus of about two weeks or more mainly over parts of central & east India, southwest monsoon has advanced over the remaining parts of Gujarat, Madhya Pradesh, Chhattisgarh, Orissa, West Bengal & Sikkim and entire Bihar, Jharkhand, east Uttar Pradesh & Uttarakhand on 29 June. Subsequently, monsoon has advanced over many parts of northwest India on 30 June and remaining parts of northwest India on 1 and 3 July. Thus, southwest monsoon has covered the entire country about 12 days earlier than its normal schedule.   

 

Rainfall during the week (25 June to 1 July)

 

            After a long weak spell, rainfall activity increased considerably during this week. Monsoon was vigorous along the west coast and northeastern states during many days. East, central and northwest India has also experienced rainfall activity at many places with isolated heavy falls. However, the rainfall remained subdued over interior parts of peninsula. During the week, rainfall was excess/normal in 13 and deficient/scanty in 23 out of 36 meteorological sub-divisions. 

 

Seasonal Rainfall Scenario (1 June to 2 July)

            The cumulative seasonal rainfall for the country as a whole during this year’s monsoon has so far been 43% below the Long Period Average (LPA). Out of 36 meteorological sub-divisions, rainfall was excess/normal in 7 and deficient/scanty in 29 meteorological sub-divisions.

 

            As compared to last week, there has been significant improvement in the overall rainfall condition. There is improvement in 24 meteorological sub-divisions, no large change in 6 and deterioration in 6 (mainly in South Peninsula). The Comparative details of the rainfall distribution for the country as a whole and over the four broad homogeneous regions of India are given below:

 

 

Regions

Actual Rainfall (mm)

% Departure from LPA

1June to   25 June

1 June to 2  July

1June to   25 June

1 June to    2  July

Country as a whole

56.4

102.9

-54

-43

Northwest India

22.4

42.4

-50

-44

Central India

34.8

83.1

-69

-55

South Peninsula

88.7

121.2

-29

-29

North East India

127.7

238.5

-55

-38

 

 

 

Meteorological conditions for the next week

 

v     The off-shore trough is likely to persist along the west coast.

v     An upper air cyclonic circulation is likely to form over northwest Bay of Bengal and adjoining east India around 5 July which may subsequently develop into a land low pressure area around 7 July. 

 

Weather forecast for next one Week

 

v     Widespread rainfall activity with heavy to very heavy falls at a few places is likely along the west coast and  northeastern states

v     Fairly widespread rainfall activity with isolated heavy to very heavy falls is likely over many parts of east India.

v     Increase in the intensity of rainfall activity over central India, Interior Maharashtra and Gujarat from 7 July onwards.

v     Subdued rainfall activity is likely over northwest and interior peninsular India during first half and scattered in the later half of the week.

 

 

Next Press Release will be issued around 10 July 2009.