Introduction and motivation
On 28 September 2022, western Croatia, especially the area of Istria and Rijeka, was affected by heavy rain, because of pronounced, long-lasting convection. The city of Rijeka suffered the most damage with, unfortunately, one casualty due to flash flooding.
The 24-hour precipitation amount, measured by the rain-gauge at the Rijeka meteorological station (287.5 mm), was the highest on record for that station (measurements have been available since 1948), providing good motivation for this case-study.
Figure 1: Geographical location of Rijeka (source: Vemaps.com).
Figure 2: Flooded streets in Rijeka (source: Jutarnji list).
Figure 3: 3-hourly precipitation amounts measured in Rijeka from 25 September to 01 October 2022.