Hardly has a prevailing weather-maker western disturbance begun to leave eastern Jammu and Kashmir and out of the country than a successor been spotted over north Pakistan and neighbourhood.
This promises to give a booster dose to the unruly weather over the plains in the northwest, east and northeast, east-central and adjoining south peninsular India, sustaining it at least until the weekend.
An India Meteorological Department (IMD) update this (Tuesday) morning said that the prevailing western disturbance over east Jammu and Kashmir and adjoining Himachal Pradesh is moving eastwards.
But a successor system has positioned itself strategically over north Pakistan and neighbourhood, the IMD said. This system would affect the western Himalayan region and adjoining plains until Friday.
Meanwhile, the volatile weather features that the prevailing western disturbance has parented in the form of an upper air trough running down from Bihar to south Kerala persisted overnight this morning.
The south-southwest-bound trough ran across Vidarbha and carried an embedded upper air cyclonic circulation that was traced to over north Chhattisgarh and neighbourhood in the morning.
The other stand-alone upper air cyclonic circulation over Assam and neighbourhood also persisted.
Satellite pictures this morning showed convective clouds rising over parts of Jammu and Kashmir and coastal Orissa.
Low to medium clouds are seen over parts of parts of the western Himalayan region, Punjab, Madhya Pradesh, Chhattisgarh, Jharkhand, West Bengal, Sikkim and northeast and extreme south peninsular India.
A weather warning issued by the IMD valid until Friday said that isolated thunder squalls with wind speeds exceeding 65 km/hr would occur over Bihar, Jharkhand, Orissa and West Bengal and Sikkim.
Only slightly less intense thunder squalls of wind speeds exceeding 45 km/hr will emerge over east Uttar Pradesh, Chhattisgarh, Arunachal Pradesh, Assam and Meghalaya during this period.
A short-term outlook said that fairly widespread rain or snow would occur over Jammu and Kashmir and Himachal Pradesh while it would be scattered over Uttarakhand.
Fairly widespread rain or thundershowers would also occur over the Northeastern States during this period. Scattered rain or thundershowers would occur over east and adjoining central India until tomorrow.
Isolated rain or thundershowers would occur over south peninsular India and the Andaman and Nicobar Islands.
An extended outlook until Sunday said that scattered rain or thundershowers would occur over the Northeastern States and isolated over east and peninsular India.
Meanwhile, an update of weather occurring until last evening said that scattered rain or snow has occurred over Jammu and Kashmir and isolated over Himachal Pradesh and Uttarakhand.
Scattered rainfall occurred over West Bengal, Sikkim and Orissa and isolated over Uttar Pradesh and the Northeastern States during this period.
Maximum temperatures fell by as much as 4-7 degree Celsius over some parts of east Uttar Pradesh, Bihar, Jharkhand and West Bengal and changed little elsewhere.
They were below normal by 5 to 8 deg Celsius over parts of Jammu and Kashmir, Bihar, Jharkhand and West Bengal and by 2 to 3 deg Celsius over parts of plains of northwest and central India and near normal over rest of the country.
The highest maximum temperature of 40.5 degree Celsius was recorded at Rentachintala in Andhra Pradesh.