Photo: Messenger
Maximum temperature in the country started falling on average one or two degrees Celsius on Thursday (2 May), the Met Office said predicting temperature may dip more from May 5 as almost all parts of the country may witness much awaited rainfall.
"Maximum temperature has started one or degree Celsius . . . it is an indicator that rainfall is likely to occur from May 5 in most areas in the country," said Md Omar Faruq, a meteorologist of Bangladesh Meteorological Department (BMD).
Analyzing the mathematical model of rainfall index, he said, Bangladesh may witness heavy to very heavy downpour from the next three or four days meaning intense of heat will decrease significantly providing some relief as the entire country braced for more extreme heat since April 1.
Large swaths of Khulna and Rajshahi division are sweltering through a heatwave as the Met office logged highest temperature above 40 degree Celsius in most stations located in the two divisions since April 1, Omar said predicting rains are likely to occur in different areas of the two division.
"Northeastern, central parts including Sylhet division and some parts of Mymensingh and Dhaka division are likely to experience heavy to very heavy rainfall from May 2," Dr Abul Kalam Mallik, BMD meteorologist said.
The meteorologist attributed uncomfortable feelings of unbearable hot-weather to high humidity persisting in the air during the afternoon and evening period suggesting avoiding movement between 12 noon to 4pm as the sunlight is getting too hot as it (the Sun) provides sunlight vertically with intense heat.
"Normally we record temperature from the air," Mallik said the highest temperature was found between 12 noon and 4pm because of vertical position of the Sun.
Analyzing humidity indexes, Mallik continued, "There is a close relation of temperature and humidity . . . discomfort feelings will increase, if high humidity persists in the air with high temperature. "Although temperature decreases after 4pm, but we feel very hot weather due to high humidity," he added.
The Met Office on Thursday recorded 41.7 degree Celsius at Chuadanga, the highest temperature of the current year while the temperature in Dhaka was recorded at 37.9 degrees Celsius but the high humidity has exposed the residents to massive discomfort.
The BMD official said the country witnessed the longest duration of the heatwave for the past 30 days since April 1 and the met office warned the phenomenon would continue throughout the next month. "But unlike the previous heatwaves, this year it spread all over the country," commented meteorologist Abul Kalam Mollik, who was supported by Zebunnesa as well.
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