Colombo, Dec 18: Cyclonic circulation over southern parts of Sri Lanka and neighbourhood persists and extends upto 0.9 km a.s.l. A cyclonic circulation extending upto 3.6 kms a.s.l. lies over Lakshadweep area and neighbourhood.
The trough of low at mean sea level over Andaman sea and neighbourhood has become less marked. The western disturbance as a trough in mid and upper tropospheric westerlies with its axis at 5.8 kms a.s.l. runs roughly along Longitude 70 degree east to the north of Latitude 35 degree.
System would move eastnortheastwards. Cold wave conditions prevailed in some parts of Odisha and north interior Karnataka. Night temperatures were appreciably to markedly below normal in some parts of Assam and Meghalaya and of Madhya Maharashtra; appreciably below normal in some parts of Konkan and Goa, Vidarbha and of Kerala and were below normal in some parts of Nagaland, Manipur, Mizoram, Tripura, east Uttar Pradesh, west Madhya Pradesh, Marathawada, coastal Andhra Pradesh, Telangana, Tamil Nadu and of south interior Karnataka and in remaining parts of Odish and of north interior Karnataka.
They were markedly above normal in Saurashtra and Kutch; appreciably to markedly above normal in some parts of Punjab and of west Rajasthan and were above normal in some parts of Sub-Himalayan West Bengal and Sikkim, Bihar and of east Rajasthan and in remaining parts of west Madhya Pradesh.
They were normal over the rest of the country. The lowest minimum temperature of 5.0 degree c has been recorded at Chandigarh Air Port (Haryana) in the plains of the country.