Mild to moderate heat wave is sweeping over many places of the country and it may continue and spread, said a weather forecast issued by the Bangladesh Metrology Department (BMD) here today. "Mild to moderate heat wave is sweeping over Rajshahi, Khulna and Barishal divisions and the districts of Dhaka, Tangail, Faridpur, Gopalgonj, Manikganj, Narayanganj, Mymensingh, Rangpur, Dinajpur, Nilphamari, Kurigram, Moulavibazar, Chattogram, Rangamati, Cumilla, Chandpur, Feni, Noakhali