Severe Thunderstorms Projected To Lash Seventeen Districts

The Bangladesh Meteorological Department has announced that a substantial monsoon wind system is advancing across the country, providing relief to the population from the intense heatwave previously generated by the El Niño climate phenomenon in the Pacific Ocean. According to an official weather bulletin issued on Saturday, 13 June 2026, severe thunderstorms accompanied by lightning are expected to sweep over seventeen regional zones, including the capital city of Dhaka, by tonight. In response to these turbulent conditions, the state meteorological authority has advised inland river ports across the designated regions to hoist Riverine Warning Signal Number One, whilst instructing all operating river vessels to navigate with extreme caution.

The specialized inland river port forecast published by the weather office notes that temporary gusty or squally winds, originating from the west or north-west, are anticipated to develop before 1:00 am. These localized storms are projected to achieve sustained velocities ranging between 45 and 60 kilometres per hour. The administrative regions specifically highlighted under this overnight meteorological alert encompass Rajshahi, Pabna, Bogra, Tangail, Mymensingh, Jessore, Kushtia, Faridpur, Dhaka, Khulna, Barisal, Patuakhali, Noakhali, Comilla, Chattogram, Cox’s Bazar, and Sylhet. Alongside the high-velocity squalls, these seventeen districts face a high probability of precipitating light to heavy rainfall and severe electrical discharges.

Regional Monsoonal Precipitation and Outlook

In its standard morning publication, the Bangladesh Meteorological Department provided an expanded overview of the atmospheric conditions expected to persist over the subsequent twenty-four hours. The report details that the prevailing southwest monsoon is generating widespread atmospheric instability across the mathematical boundaries of the country. Consequently, precipitative activities—ranging from light to moderate downpours interspersed with sudden gusts of wind and frequent cloud-to-ground lightning strikes—are expected to occur across multiple jurisdictions.

The geographical distribution of the forecasted precipitation indicates that a majority of locations within the administrative divisions of Rangpur, Mymensingh, Barisal, Chattogram, and Sylhet will witness active rainfall. Concurrently, several areas within the divisions of Rajshahi, Dhaka, and Khulna are slated to experience similar scattered thundery showers. Furthermore, the meteorological experts have explicitly noted that isolated instances of moderately heavy to exceptionally heavy downpours remain a distinct possibility in specific localized pockets of the country during this seasonal transition.

Temperature Variables and Inland Maritime Safety

Regarding temperature fluctuations across the country’s grid, the meteorological authority stated that daytime temperatures are projected to remain largely unaltered and stable compared to previous recordings. Conversely, nocturnally recorded temperatures are expected to undergo a marginal reduction, directly influenced by the cooling effect of the incoming precipitation and wind patterns. This slight decrease in night temperatures is anticipated to temporarily break the sustained thermal discomfort experienced by urban and rural populations alike during the preceding daytime periods.

Because inland water transport represents a vital component of the commercial and public transit infrastructure in Bangladesh, the enforcement of Riverine Warning Signal Number One functions as an essential preventative safety measure. This specific signal alerts vessel operators that a region is threatened by squally weather conditions of temporary duration, during which crafts of various sizes—particularly smaller, non-mechanised, or traditionally designed riverboats—must seek shelter or exercise heightened vigilance. The state authorities have reiterated that all active maritime operators must remain updated via official radio and digital disclosures to mitigate the risk of transport accidents on the country’s extensive river networks during the overnight storm cycle.