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Strong monsoon flows, apparently handicapped by a flawed circulatory pattern, have once again caused a low-pressure area to pop up over land on Monday.
This is the third time during this season that a weather system has formed primarily over land without an umbilical cord stretching into the Bay waters.
TO MOVE WEST
India Meteorological Department (IMD) traced the system to over northwest Madhya Pradesh and neighbourhood by Monday evening.
The system is forecast to move west across central India towards Gujarat-west Rajasthan bringing rains to these regions over the next few days. The western disturbance and the land-based low-pressure area are also expected to set up interactive rains, which can range from being heavy to very heavy over parts of northwest India. This is aside of a network of other upper air cyclonic circulations embedded into the monsoon trough over land that stretched northwest-to-southeast with the eastern end dipping into east-central Bay of Bengal.
WESTERN DISTURBANCE
One such cyclonic circulation persisted over west Rajasthan and neighbourhood parented by a western disturbance straddled across north Pakistan and Jammu and Kashmir. The offshore trough from Gujarat coast to Kerala coast too persisted. On Monday, the western end of the monsoon trough was aligned to the south of its normal position while the eastern end was near its normal position.
The IMD said that the land-based monsoon trough would remain active with the embedded low-pressure area and cyclonic circulations during next three days. Kalpana-1 satellite imagery, on Monday evening, revealed the presence of convective clouds over parts of southwest Himachal Pradesh, Punjab, Rajasthan, south Uttar Pradesh and Madhya Pradesh in north and northwest India.
CONVECTIVE CLOUDS
Towards the east, these clouds were seen rising over southwest Bihar, the North-eastern States, Madhya Pradesh, north Chhattisgarh, Jharkhand, Gangetic West Bengal, Orissa, north and adjoining central Bay of Bengal, north Andaman Sea and southeast Arabian Sea.
A weather warning valid for the next two days said that isolated heavy to very heavy rainfall would occur over Jammu and Kashmir, Himachal Pradesh, Uttarakhand, east Rajasthan, Madhya Pradesh, Jharkhand, Gangetic West Bengal and east Gujarat. Isolated heavy rainfall has been forecast over Punjab, Saurashtra, Kutch, north Chhattisgarh and north Orissa during this period.
OVERNIGHT RAINS
The 24 hours ending Monday morning saw widespread rainfall being reported from Jammu and Kashmir, Himachal Pradesh, Bihar, West Bengal, Sikkim, Madhya Pradesh, Jharkhand and along the west coast. It was fairly widespread over east Rajasthan, Uttar Pradesh, the North-eastern States, Chhattisgarh, Orissa, Vidarbha, interior Karnataka, Lakshadweep and Andaman and Nicobar islands.
It was scattered over Uttarakhand, Punjab, Haryana, Marathawada, Madhya Maharashtra and Andhra Pradesh while being isolated over remaining parts of the country.
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