After 33 days of record heatwave spell,northeastern, central and south-eastern parts of Bangladesh witnessedmuch awaited rainfall with thunderstorms last night bringing respitefrom intense heatwave.“Much of the country including Dhaka city experienced significantrainfall with thunderstorms last night bringing downs mercury asBangladesh has been facing longer and intense heatwave since April 1,”Omar Faruq, meteorologist of Bangladesh Meteorological Department(BMD) told BSS this morning.Dhaka city and its adjacent districts recorded a significant amount ofrainfall, he said adding, “Dhaka recorded 36mm rainfall while 31 mmrains were recorded in Narayanganj, 32mm in Kishorganj, 12mm inTangail.”The country’s highest rainfall was recorded in Srimangal with 124mmwhile 37mm Patenga and 62mm at Rangamati, Faruq said addingdifferent regions including Chattogram and Barishal divisionwitnessed much welcome rains with thunderstorms. Extreme heat has blasted two divisions  – – Khulna and Rajshahisince at the beginning of April but these divisions did not receiverainfall till now this summer, the BMD meteorologist addingRangpur division received very insignificant rainfall last night.“Bangladesh is likely to witness heavy to very heavy rainfall withthunderstorms from today and it will continue throughout the month,”BMD meteorologist Dr Abul Kalam Mallik saidHe said as rainfall with thunderstorm will continue hoping to bid farewellthe sweltering heatwave that battered the country forcing school closure andstaying the people indoors claiming 15 deaths linked to heatstroke.   Northeastern, central parts including Sylhet division and some parts of  Mymensingh and Dhaka division are likely to experience heavy to veryheavy rainfall between May 6 and 11 simultaneously south-western andnorth-western regions will witness rainfall with thunderstorms, he added.Mallik suggested avoiding to stay outdoors during the hailstorm as intensityof hailstorms is increasing accompanied with frequent lightning impacted byclimate change, which are largely responsible for casualties The meteorologist attributed uncomfortable feelings of unbearable hot-weather to high humidity persisting in the air during the afternoon andevening period suggesting avoiding movement between 12 noon to 4pm asthe sunlight is getting too hot as it (the Sun) provides sunlight verticallywith intense heat.”Normally we record temperature from the air,” Mallik said the highest  temperature was found between 12 noon and 4pm because of verticalposition of the Sun.Analyzing humidity indexes, Mallik continued, “There is a close relation of temperature and humidity . . . discomfort feelings will increase, if highhumidity persists in the air with high temperature. “Although temperaturedecreases after 4pm, but we feel very hot weather due to high humidity,” headded.  The Met Office today recorded 39.5 degree Celsius at Rajshahi while the temperature in Dhaka was recorded at 36.9 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 33 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 wassupported by Zebunnesa as well.Visibly for the first time the meteorologists acknowledged that the climatechange phenomenon caused the erratic weather pattern with graduallyexpanding areas of heatwave, joining the voice with the climate experts andactivists.”Maximum temperature in the country started falling on average one or twodegrees Celsius from May, the Met Office said predicting temperature maydip more from today as almost all parts of the country may witness muchawaited rainfall, ” Md Omar Faruq, a meteorologist of BangladeshMeteorological Department (BMD) said.Large swaths of Khulna and Rajshahi division are sweltering through a  heatwave as the Met office logged highest temperature above 40 degree in most stations located in the two divisions since April 1, Omarsaid predicting rains are likely to occur in different areas of the twodivision.