Marek Kučera 
On July 5, 2025, Northern Italy experienced a series of severe thunderstorms that brought intense rainfall and large hail across several regions, notably Emilia-Romagna, Piemonte, Lombardia, Liguria, and Veneto. These storms caused significant local damage, including flooding, structural impacts, and disruptions to transportation.
The most intense precipitation was recorded near Cantù in Lombardia, where 94.5 mm of rain fell within just 1.7 hours, causing road damage and flooding. Other heavy rainfall reports include 105 mm in localized areas, with several locations recording over 60 mm in less than two hours. Such sudden, heavy downpours led to flash flooding and overwhelmed drainage systems in affected towns.
Large hail accompanied many of these storms, with hailstones ranging from 2 cm to as much as 6.5 cm in diameter. Particularly notable hail events include 6.5 cm hailstones in Riolo Terme (Emilia-Romagna) and Montaldo di Mondovì (Piemonte), which caused damage to roofs, vehicles, and crops. In Roburent (Piemonte), hailstones reached 6 cm, breaking car windows and damaging chimneys and roofs. Several other towns such as Brisighella, Castrocaro Terme, Predappio, and Casola Valsenio reported hailstones between 3 and 5 cm.
Wind damage was also widespread, with recorded gusts reaching up to 92 km/h in places like Treviglio (Lombardia). Severe winds uprooted trees, damaged roofs and chimneys, and caused power outages. In Crema (Lombardia) and Tribiano (Lombardia), fallen trees blocked roads and caused injuries, including a woman hit while driving.
An observed funnel cloud over the water near Imperia (Liguria), lasting approximately five minutes, confirms the presence of a weak tornado-like event, adding to the severity of the day’s weather.
Eyewitness accounts, videos, and photos documented by trained storm spotters and meteorological networks confirm the widespread nature and intensity of these storms. The reports have been verified by reliable sources such as MeteoNetwork Pretemp.
These storms highlight the volatility of summer weather in Northern Italy, where moist Mediterranean air meets mountainous terrain, frequently triggering strong convection and severe weather. The combination of intense rainfall, large hail, and damaging winds poses risks to life, property, and agriculture, emphasizing the need for continued monitoring and preparedness during the storm season.
Last 72 hours on ESWD. Source: https://eswd.eu/cgi-bin/eswd.cgi
