The latest forecast indicates that La Nina conditions are likely to be moderate till spring (May-end) and are likely to start weakening thereafter, IMD said.
The IMD's climate summary in January said that 2017 was the "fourth warmest year on record since 1901". Met officials have warned that temperatures in many places in the north, west and center can increase from the normal by over 1 degree Celsius.
On the summer temperature forecast the IMD said that normal to above-normal heat wave conditions are likely over the core heat wave zone in India, spanning 17 states-from Punjab in the north-west to coastal Andhra Pradesh in the south. Not only this, in the southern states, the relatively high temperature will be more than half degree.
The head of IMD's long-term forecasting division, D Sivananda Pai said: "In the absence of other large-scale signals during the March-May period, the increased temperatures predicted in the forecast can be attributed to global warming". Overall, India Meteorological Department figures show, 95% of the country had deficient winter rainfall, with as much as 67% of the country's area recording either large deficiency (rainfall less than 40% of normal) or no rain. The anomalies will be lesser on the western and eastern coasts and lowest in Tamil Nadu, Kerala and parts of Karnataka.
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People in Delhi are expected to face high temperature this summer. "Remaining subdivisions are likely to experience minimum temperature anomalies between 0.5°C & 1°C".
It is said in the estimation of the department that temperature in Delhi can be more disturbing.
The Met, in its seasonal forecast, also said that there are 52 percent chances of temperatures hitting a peak, especially in core heat wave zone.
A year ago too, the IMD had forecast summer temperatures in several parts of north, northwest, central and east India to be over 1 degree Celsius of their historical summer normals.
"A majority of worldwide weather models have been showing increased temperatures in most parts of the world in the recent years".