The low pressure area over Southeast Bay and adjoining South Andaman Sea has intensified into a well-marked low over the same area.
“It is likely to intensify further. Trough of low lies over West Bengal and adjoining area,” a Met office bulletin said on Tuesday.
Severe heat wave is sweeping Rajshahi, Netrakona, Khulna, Chuadanga and Kushtia districts and mild to moderate heat wave is sweeping other parts of the country and it may continue, it said.
Weather may remain dry with temporary partly cloudy sky over the country with chances of rain or thunders at one or two places over Mymensingh and Sylhet divisions.
Day and night temperature may rise slightly over the country.