Ruse sits on the Danube river in northern Bulgaria, directly across from Romania, and receives around 550 mm (about 22 inches) of rain a year, with a summer peak from convective storms typical of the wider Danube basin. The river has a history of elevated levels during periods of sustained heavy rain across its vast upstream watershed spanning much of central Europe, a slower-moving risk compared with the faster local thunderstorms that affect the city more routinely in summer. Because these two hazards unfold on such different timescales, radar is specifically useful for the faster-developing local storms. Bulgaria’s National Institute of Meteorology and Hydrology operates the national radar network.
Learn more: How Does Rain Radar Work? · Open the full Rain Map