The drop in temperatures will come as a relief for those in Delhi-National Capital Region (NCR) which has seen weather records tumble last week.
The prolonged April heat wave that has blazed over North, Northwest and Western India for the past week is set to abate. A Western Disturbance (WD), currently over Jammu and Kashmir, will infuse cool air over these regions, bringing down day-time temperatures, the India Meteorological Department (IMD) has said.
The drop in temperatures will come as a relief for those in Delhi-National Capital Region (NCR) which has seen weather records tumble last week. The Palam observatory recorded 44.9 degree Celsius last week and it was the highest temperature recorded in the past decade.
The impact of the WD was felt on Saturday as parts of Delhi-National Capital Region (NCR) saw thundershowers, dust storms and a drop in temperatures. Even Churu in Rajasthan, that was the hottest place in India on Friday at 46 degree Celsius, recorded a two-degree drop in temperatures.
A WD is a low-pressure system that originates over the Mediterranean, Caspian and Black Seas and moves eastward and usually passes over the Himalayas. The impact of these WD's is spread as far as Central India.
"A WD is over Jammu and Kashmir and another one is over Afghanistan as an upper air cyclonic circulation. This will help in a gradual temperature drop. Also, the heat wave across the Northern and North Western parts is as good as over. We are not likely to see another heat wave in these parts till May," said a senior IMD official. Odisha is the only place that is likely to see heat wave conditions in isolated pockets, the IMD said in its bulletin on Saturday.
In IMD parlance, it is a heat wave if the maximum temperature is four to five degrees above normal for two or more days while a severe heat wave is declared if maximum temperature is seven degrees above normal or above 47 degree Celsius. For the hills, daytime temperatures touching 30 degree Celsius or above is considered as heat wave conditions. The IMD had said in February that Northwest India was going to be hotter than the rest of the country this summer, with temperatures "likely to be more than 1 degree Celsius above normal."
Meanwhile, across most of Northeast, there will be moderate to heavy rainfall as an upper air cyclonic circulation prevails. The IMD said on Saturday that Assam and Meghalaya will receive heavy to very heavy rainfall in the coming days while Arunachal Pradesh, Mizoram, Nagaland, Manipur and Tripura will see heavy rains.
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