Trieste sits in Italy’s northeastern Alpine foothills, one of the wettest and most flash-flood-prone parts of the country, where moist air is forced upward over the mountains and produces some of Italy’s heaviest rainfall totals.
On the Adriatic coast near Slovenia, the city sits at the edge of one of Europe’s wettest mountain regions, where orographic lift produces intense rainfall. Steep valleys and fast-flowing mountain rivers mean a single intense storm can raise water levels dangerously within a very short time, making radar tracking of individual storm cells especially important here. Learn more: Flash Flood Warning Signs on Radar · Open the full Rain Map