This low pressure area has since persisted and by August 12 it has moved over to Vidarbha and adjoining areas of MP lay as a cyclonic circulation extending upto mid-tropospheric levels over the same region. The axis of the monsoon trough on sea level chart on August 12 passed through Barmer, Bhopal, Raipur, Gopalpur and thence south-eastwards to west-central Bay of Bengal. The cyclonic circulation over Gujarat region and adjoining areas now lay over Saurashtra and Kutch, adjoining areas of Gujarat region, north central of west coast and northeast Arabian Sea between 1.5 and 5.8 kms ASL. The off-shore trough on sea level chart from south Gujarat coast to Kerala coast persists. A cyclonic circulation extending upto 2.1 kms ASL lay over northwest Rajasthan and adjoining areas of Pakistan.

The low pressure area formed on August 7 over north Bay of Bengal became well marked in-situ on August 8. The system continued to persist over north and adjoining west-central Bay of Bengal on August 9. In the morning of August 10 it moved westward and lay off north Andhra Pradesh coast. In the morning of August 11, this low pressure area moved westnorth-westward and lay over Vidarbha and neighbourhood.

So far in course of its movements, the low pressure areas has given good rainfall in the regions.

No depression in first half
No monsoon depression was formed in the first half of the current monsoon period in June-July. In June three low pressure areas and in July four low pressure areas formed over the Bay of Bengal. They moved in a northwesterly direction along the monsoon trough. These system, therefore, resulted in good rainfall over central and northwest India.

Rain forecast
Rain or thundershowers are likely to occur at many places in Gangetic West Bengal, West MP, Gujarat state, Konkan and Goa, central Maharashtra, Marathwada and coastal Karnataka and at a few places over the rest of the country.

Heavy rain is likely to occur at isolated places in Gujarat state and Konkan and Goa by Monday, the August 14.

Previous week review
In the week ended August 9, monsoon was active in sub-Himalayan West Bengal, Sikkim, north interior Karnataka, Rayalaseema, Tamil Nadu and Andaman & Nicobar Islands on some days of the week. Rain or thundershowers also occurred at most places in Assam, Meghalaya, coastal and south interior Karnataka, at many places in Arunachal Pradesh, Nagaland, Manipur, Mizoram, Tripura, Gangetic West Bengal, Kerala and Lakshadweep. Rains also occurred at a few places in Himachal Pradesh, Punjab, hills of west UP, Bihar plains, Orissa, Maharashtra, Telangana and coastal Andhra Pradesh and at isolated places in rest regions of the country except Rajasthan where weather was mainly dry.

On August 10, rains were vigorous in Telangana and in plains of west UP and active in Himachal Pradesh,hills of west UP, east Rajasthan, south Gujarat region, west MP, Konkan, Goa, Marathawada, Vidarbha, coastal AP, coastal and north interior Karnataka. Rains also occurred at most places in Arunachal Pradesh, Orissa, Kerala, at many places in Assam, Meghalaya, Nagaland, Manipur, Mizoram, Tripura, West Bengal, Sikkim, Bihar plateau, east MP, Rayalaseema and at a few isolated places in rest regions of the country except Lakshadweep and Andaman & Nicobar Islands.

On August 11, the southwest monsoon has been vigorous in Konkan, Goa and active in Saurashtra and Kutch. Rain or thundershowers occurred at many places in sub-Himalayan West Bengal, Sikkim, central Maharashtra, Marathwada, Vidarbha and Kerala, at a few places in Assam, Meghalaya, Gangetic West Bengal, Punjab, Himachal Pradesh, Jammu & Kashmir, east Rajasthan, west MP, Gujarat region and coastal Karnataka and at isolated places in Andaman & Nicobar Islands, Telangana, Tamil Nadu and north interior Karnataka. Mainly dry weather prevailed over the rest of the country.