An easterly wave is impacting the extreme southern peninsular India while a counterpart wave from west across the border is about to impact the north and northwest promising some respite from the variously freezing and foggy conditions.
The easterly wave has been in the making for sometime and had been captured early enough by international models. They had consistently maintained this outlook for more than a week now, including the blow-up of rainfall over south Kerala and Tamil Nadu since reported on Saturday.
HEAVY RAINS
The Chennai Met Centre said in its update on Sunday that rainfall occurred at many places over coastal Tamil Nadu and at a few places over Kerala during the 24 hours ending in the morning.
Isolated rainfall was reported from interior Tamil Nadu and coastal Andhra Pradesh. Thiruvananthapuram city recorded a very heavy rainfall of 13 cm during this period.
Forecast for the next two days said that rain or thundershowers are likely at many places over coastal Tamil Nadu, Puducherry, Kerala and Lakshadweep.
Isolated rain or thundershowers are likely over interior Tamil Nadu, Rayalaseema, coastal Andhra Pradesh, coastal and south interior Karnataka.
A warning valid for the period hinted at the possibility of isolated heavy rain over Kerala and Lakshadweep during this period.
The US National Centres for Environmental Prediction (NCEP) has maintained its outlook for rains to grow north-northeastward across peninsular India pushed as they would be in this direction by the dominant westerly flows from the Arabian Sea.
In fact, the International Research Institute (IRI) for Climate and Society at the University of Columbia in its outlook until January 14 has said that ‘wetter than average' conditions would occur over most of peninsular and central India and parts of north and northwest India.
ONLY EXCEPTIONS
The only exceptions could be Gujarat and Rajasthan, east Uttar Pradesh, Bihar, Jharkhand and West Bengal, the IRI outlook said. But heavy to very heavy rains have been forecast for coastal Karnataka, almost entire Karnataka, south madhya Maharashtra.
Meanwhile, India Meteorological Department (IMD) said in its update that minimum temperatures on Saturday were below normal by 2-4 deg Celsius over parts of Punjab, Rajasthan and west Madhya Pradesh. The lowest minimum of 1.3°C was recorded at Bikaner in Rajasthan.
The maximum temperatures too were below normal by as much as 6-10 deg Celsius over most parts of Punjab, Haryana, northwest Rajasthan and west Madhya Pradesh. Cold day conditions are prevailing over most parts of Punjab, Haryana and Uttar Pradesh.
Fog conditions have been prevailing over most parts of Indo-Gangetic plains. Forecast until Wednesday said that fog to dense fog conditions would persist in the mornings over parts of the Indo-Gangetic plains.
Cold day conditions (with dipping maximum temperatures) will occur over parts of Punjab, Haryana and Uttar Pradesh. No significant change is expected in minimum temperatures over northwest and central India during this period.
Isolated to scattered rainfall activity has been forecast over parts of northwest India and adjoining central India form Tuesday onwards as a trough in the westerly system enters northwest India from across the border.
No comments:
Post a Comment