The heat wave over the northern region got hotter on May 15, with temperatures rising by 1-1.5 degrees Celsius from the previous days, the Central Hydrological and Meteorological Forecast Center reported.
In the afternoon the mercury shot up to 41-42 degrees Celsius in Ha Noi and the provinces of Yen Bai, Phu Tho, and Thanh Hoa.
The heat wave is forecast to last another four or five days 4- 5 days.
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