The weather over the south is being set by an upper air trough running down from east Bihar to south Tamil Nadu with an embedded upper air cyclonic circulation over north interior Karnataka and neighbourhood.

An India Meteorological Department this (Friday) morning also said that a feeble fresh trough of lower pressure has emerged elsewhere, lying extended from east Uttar Pradesh to south Rajasthan across northwest Madhya Pradesh.

The fresh western disturbance expected to affect western Himalayan region from tomorrow onwards could alter the configuration of these weather formations.

During the period until last (Thursday) evening, scattered rainfall has been reported from Vidarbha and isolated over Marathawada, Madhya Pradesh, North Interior Karnataka and Andaman and Nicobar Islands.

Maximum temperatures were near normal over most parts of the country. The highest maximum temperature of 41 deg Celsius was recorded at Idar in Gujarat.

Satellite imagery early this morning revealed the presence of low to medium clouds over most parts of the country except parts of west and south peninsular India.

A weather warning said that isolated dust storms or thunderstorms would occur over east Rajasthan and Uttar Pradesh until tomorrow.

Isolated thunder squall may also unfold over Chhattisgarh, Orissa and Gangetic West Bengal.

A short-term outlook said that scattered rain or snow would occur over Jammu and Kashmir and Himachal Pradesh and isolated over Uttarakhand on Friday and increase thereafter.

Scattered rain or thundershowers are also likely over the Northeastern States while isolated rain or thundershowers has been forecast for interior Maharashtra, east and adjoining central India until Sunday.

Isolated rain or thundershowers would occur over south peninsular India and Andaman and Nicobar Islands.

Isolated dust storms or thunderstorms may break out over east Rajasthan and Uttar Pradesh until tomorrow.

Maximum temperatures are expected to fall by 2 to 3 deg Celsius over the Indo-Gangetic plains.

An extended outlook until Tuesday said that fairly widespread rain or snow would occur over western Himalayan region and isolated dust storm or thunderstorm over the plains of northwest India.

Scattered rain or thundershowers would occur over the Northeastern States, Kerala and coastal Karnataka and isolated over the east coast.

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