The Met Office in its long range forecast predicted that temperatures would continue to rise throughout March with the possibility of erratic thunderstorms accompanied by lightning.
The forecast released Sunday said that the maximum temperature would remain around 36 C mostly but at places the temperature may rise up to 40 C near the end of the month.
It is considered a heat wave when temperature crosses 36 C and persists for three or more days at several weather stations at a time.
‘High temperatures would persist because of lack of rain,’ meteorologists Shahinul Islam told New Age.
The heat wave is likely to sweep western and north-western Bangladesh, said the long range forecast.
The flood prediction for the north-eastern region in the last quarter of the month was made based on the changing patterns in precipitation trend in the month over the last decade.
March is the first month of what is meteorologically called pre-monsoon season, a period of three months characterised by high temperatures and not so much rain.
But heavy rains occurring in March in 2010, 2012, 2016 and 2017, at times released so much water that large-scale flooding ensued.
Forecasters said that the prediction of flooding in March is rather new and could be linked to climate change impact.
Cherapunji being the world’s wettest place, north-eastern Bangladesh, which works as a bowl for rainwater, may face flooding in the coming month.
An increase in rain in March is likely to trigger flash flooding in north-eastern districts such as Sylhet, said weather forecasters.
The Met Office also predicted thunderstorm with lightning and hailstorm in northern, north-western and central Bangladesh for one or two days during the month.
Weather forecasters said that weather system prevailing upon Bangladesh greatly depended on the surface temperature of the Pacific Ocean.
They said that lately the Pacific Ocean surface temperature fluctuated which is favourable for turning extreme weather events such as cyclone, flooding and tidal surges into more intensified and unpredictable disasters.
On Monday, the country’s highest maximum temperature of 33 C was recorded at Sylhet.
In the capital the maximum temperature was recorded at 31.4 C.
The daily forecast by the Met Office said that the maximum temperature may fall slightly over north-western part in 24 hours until Tuesday afternoon.
But the minimum temperature was likely to rise by up to 2 C all over the country, said the forecast.
There is a chance of light rain and drizzle at one or two places over Khulna and Rajshahi division, said the forecast.
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