This chapter discusses weather radar networks and their use in monitoring severe storms in the northeast Indian subcontinent, mainly in Bangladesh and seven states in northeast India. This chapter focuses on two types of severe storms in the region, tornadoes and the torrential rains and flash floods. As for tornadoes that cause damage and losses in Bangladesh, the feasibility of building an operational system on their predictions in the country is discussed. It is possible to build the system by combining a technique of predicting temporal variations in latent instability of the atmosphere using a numerical model and a technique of detecting convective clouds and/or mesocyclones using weather radar observations. As for torrential rains and flash floods over the basin of the Meghna River, flowing through three countries, Bangladesh, India, and Myanmar, it is possible to detect, monitor, and predict them by combining weather radars around the basin and rain gauges in a coverage of the radars.