The Hindu Business Line : Bountiful NE monsoon draws to a close

Chennai topped the league with 164 per cent excess, followed by Tiruchi (141 pc), Thiruvallur (135 pc), Namakkal (132 pc), and Krishnagiri (123 pc).

Thiruvananthapuram , Jan. 18

THE India Meteorological Department (IMD) has formally announced the withdrawal of what has been a bumper northeast monsoon with the last in the series of easterly waves petering out as a low-pressure area over southwest Arabian Sea.

While doing so, it had come under the influence of a large western disturbance that caused it to direct a line of moisture feed into that system.

This interaction between the two weather systems had in turn resulted in the western disturbance inducing the formation of a `low' over west Rajasthan.

The meteorological subdivision of Tamil Nadu and Pondicherry created a flood of records as all except one district recorded `excess' rainfall during the just concluded northeast monsoon. Tuticorin was the lone district to tot up anything less - a `normal'.

Chennai topped the league with 164 per cent excess, followed in that order (in percentage figures) by Tiruchi (+141), Thiruvallur (+135), Namakkal (+132), and Krishnagiri (+123). In comparison, the season was lacklustre in Kerala with at least five districts ending up in the `deficient' category.

Meanwhile, the National Centre for Medium Range Weather Forecasting (NCMRWF) maintained its outlook for low night temperatures and fog for north and northwest India over the next two days. On Wednesday, the prevailing western disturbance lay over Jammu and Kashmir and Himachal Pradesh.

The system is likely to move east-northeast and cause snowfall/rains over the hilly regions of northwest India (Jammu and Kashmir, Himachal Pradesh and Uttaranchal) and rainfall over adjoining plains (Punjab, Haryana, west Uttar Pradesh and north Rajasthan) during the next 24 hours. But this activity is expected to reduce thereafter.

A fresh western disturbance is likely to approach north Pakistan and adjoining Jammu and Kashmir by Saturday.

This is likely to cause snowfall/rains over Jammu and Kashmir, Himachal Pradesh and Uttaranchal and rains in the adjoining plains.

Night temperatures are likely to fall by about three degree C over the northwest in the next two days and rise thereafter by about two-three degree C during Friday-Saturday with the fresh western disturbance making its presence felt in the region.

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