Storms with a speed of 80 km/h are likely to blow over four parts of the country. For this reason, two naval warning signals have been raised in all the river ports of the concerned area. Saturday (May 4) forecasted by the Meteorological Office. Meteorologist Kho. Hafizur Rahman said that temporary gusty winds with a speed of 60 to 80 km per hour with rain/thundershower may blow over Bogra, Tangail, Mymensingh and Sylhet regions.The river ports of these areas have been asked to show naval warning signal number two. Meanwhile, in another warning, he said that the mild to moderate heat wave running over Rajshahi, Dhaka, Khulna and Barisal divisions may continue for the next 24 hours from 6 pm on Saturday. Uncomfortable conditions may persist due to excess water vapor.Heatwave is sweeping over the country for 35 consecutive days. April has already recorded the highest temperature in five decades. However, the Met Office has said that the heatwave may end this week.